Currently,cultivated tea plants are classified into three varieties,namely,Camellia sinensis var.sinensis,C.sinensis var.assamica,and C.sinensis var.kucha.Three tea varieties made green teas(TVGTs)are widely consumed ...Currently,cultivated tea plants are classified into three varieties,namely,Camellia sinensis var.sinensis,C.sinensis var.assamica,and C.sinensis var.kucha.Three tea varieties made green teas(TVGTs)are widely consumed worldwide.However,a comparative investigation of the beneficial effects,mechanism,and characteristic compounds of TVGTs has not been reported.Here,three representative tea plant varieties,namely,C.sinensis var.sinensis cv.Fuding(FD),C.sinensis var.assamica cv.Yunkang 10(YK),and C.sinensis var.kucha(KC),planted in the same garden,were used to make green teas utilizing the same standard procedure.Our findings show that the TVGTs effectively improved hyperglycemia,obesity,dyslipidemia,fatty liver,and mesenteric artery(MA)hypercontractility in mice with diabetes and obesity induced by a high-fat diet(HFD)after 11-and 22-week interventions,with YK being the most effective at 22 weeks.Liver lipidomics indicated that the TVGTs restored the glycerophospholipid and sphingolipid balance and reduced triglycerides,with YK demonstrating superior effects.The TVGTs,particularly YK,suppressed triglyceride synthesis through the ARV1-FXR-SHP-SREBP-1c pathway.A chemical profile analysis revealed that YK green tea had enriched active compounds,including caffeine,quinic acid,L-theanine,gallic acid,and catechins,compared with FD and KC green teas,which may contribute to ameliorating diabetic dyslipidemia via synergistic action.As a representative tea variety of C.sinensis var.assamica,YK green tea was found to be superior to the other two green teas in preventing and treating diabetic dyslipidemia,especially with long term consumption.These data provide important information for tea plant breeders and tea consumers.展开更多
Efficient nitrogen management is crucial for developing sustainable strategies aimed at enhancing yield while mitigating negative environmental impacts.However,research focusing on this aspect in the production of fre...Efficient nitrogen management is crucial for developing sustainable strategies aimed at enhancing yield while mitigating negative environmental impacts.However,research focusing on this aspect in the production of fresh maize is limited.Therefore,this study analyzed the effects of nitrogen application rates on the yields of 40 sweet and 44 waxy maize varieties at five sites in Zhejiang Province,China,from 2015 to 2019.The nitrogen application rates were categorized as either relatively high(RHN,>300 kg ha^(-1) for sweet maize and>320 kg ha^(-1) for waxy maize)or relatively low(RLN).An increase in nitrogen application rates significantly reduced nitrogen fertilizer partial productivity in both sweet and waxy maize(R^(2)=0.616,P<0.01;R^(2)=0.643,P<0.01),indicating that the optimum nitrogen application rates in this study might be the lowest values(160 kg ha^(-1) for sweet maize and 180 kg ha^(-1) for waxy maize).The kernel number per ear of sweet maize had a potentially more significant impact on fresh grain yield than the 1,000-fresh kernel weight under both RLN and RHN.In waxy maize,1,000-kernel weight contributed more to fresh grain yield under RLN,while kernel number per ear and 1,000-kernel weight cooperatively affected the yield under RHN.This study found that sweet maize required taller plant and ear heights,along with an optimal ear-plant height ratio,to enhance dry matter accumulation and increase source size,particularly under RLN,and to ultimately achieve a higher fresh grain yield.In contrast,a lower ear height and ear-plant height ratio in waxy maize probably contributed more to the greater kernel number and weight under RLN,likely due to a lower ear height which can reduce the distance between sink and source,enabling more efficient photoassimilate allocation to the ear.展开更多
The protection system for traditional Chinese medicine(TCM)varieties,as an important policy tool to promote the development of TCM,has a long history of over 30 years,from the promulgation of the“Regulations on the P...The protection system for traditional Chinese medicine(TCM)varieties,as an important policy tool to promote the development of TCM,has a long history of over 30 years,from the promulgation of the“Regulations on the Protection of Traditional Chinese Medicine Varieties”in 1992 to the comprehensive revision of the draft for soliciting opinions in 2022.The TCM protection system evolves to meet the needs of innovative development of TCM.This paper reviews the policy developments in TCM varieties protection,collates protection data(1993 to 2024),and analyzes enterprises application strategies amid impending regulatory changes.展开更多
In this paper,we shall study structures of even lattice vertex operator algebras by using the geometry of the varieties of their semi-conformal vectors.We first give the varieties of semi-conformal vectors of a family...In this paper,we shall study structures of even lattice vertex operator algebras by using the geometry of the varieties of their semi-conformal vectors.We first give the varieties of semi-conformal vectors of a family of vertex operator algebras V_(√kA_(1)) associated to rank-one positive definite even lattices √kA_(1) for arbitrary positive integers k to characterize these even lattice vertex operator algebras.In such a family of lattice vertex operator algebras V_(√kA_(1)),the vertex operator algebra V_(√2A_(1)) is different from others.Hence we describe the varieties of semi-conformal vectors of V_(√2A_(1)) and the fixed vertex operator subalgebra V^(+)√2A_(1).Moreover,as applications,we study the relations between vertex operator algebras V_(√kA_(1) )and L_(sl_(2))(k,0)for arbitrary positive integers k by the viewpoint of semi-conformal homomorphisms of vertex operator algebras.For case k=2,in the series of rational simple affine vertex operator algebras L_(sl_(2))(k,0)for positive integers k,we show that L_(sl_(2))(2,0)is a unique frame vertex operator algebra with rank 3.展开更多
To improve the economic benefits and farmers’enthusiasm of Brassica napus production,this study compared the agronomic traits,economic traits,and incomes from vegetable and oilseed among five early maturing varieties...To improve the economic benefits and farmers’enthusiasm of Brassica napus production,this study compared the agronomic traits,economic traits,and incomes from vegetable and oilseed among five early maturing varieties of Brassica napus,thereby selecting the suitable materials for breeding the varieties for both vegetable and oil.The results showed that all of the five varieties had low erucic acid in oil and low glucosinolate in rapeseed meal.The economic benefits of the varieties for vegetable and oil were generally higher than those of the varieties for only oil.‘CNT01’had the best economic benefits,with the vegetable yield of 8175.3 kg/hm^(2),the rapeseed yield of 2476.5 kg/hm^(2),the vegetable income of 14859.0 yuan/hm^(2),the rapeseed income of 32701.2 yuan/hm^(2),and the net income of 35560.2 yuan/hm^(2).‘CNZ01’was selected as the variety with highest oil quality,with the rapeseed yield of 2712.6 kg/hm^(2) and the net income of 11775.6 yuan/hm^(2).In conclusion,‘CNT01’was selected as the variety for both vegetable and oil.展开更多
RAPD assessment of genetic variations in 33 varieties of banana (Musa nana Lour.) was carried out. Eighteen primers were screened from 249 10 bp arbitrary primers, and a total of 192 DNA bands were amplified, among wh...RAPD assessment of genetic variations in 33 varieties of banana (Musa nana Lour.) was carried out. Eighteen primers were screened from 249 10 bp arbitrary primers, and a total of 192 DNA bands were amplified, among which 183 (95.31%) were polymorphic. The average number of DNA bands amplified by each primer was 10.67, and the average genetic distance among 33 varieties was 0.3412. Based on UPGMA cluster analysis of 192 DNA bands amplified by 18 primers a DNA molecular dendrogram was established for 33 varieties of banana in China, which divided the 33 varieties into four groups: group A, B, C and D. Group A included 20 varieties, group B included 5 varieties, group C included 2 varieties and group D included 6 varieties. Group A could be divided into 3 sub-groups: A1, A2 and A3. The molecular foundation of genetic diversity of banana was also explored.展开更多
Based on the results of the national regional trail for winter rapeseed in four groups,including the upper reaches,middle reaches and lower reaches of Yangtze River and Huang-Huai region in the past twenty years,new v...Based on the results of the national regional trail for winter rapeseed in four groups,including the upper reaches,middle reaches and lower reaches of Yangtze River and Huang-Huai region in the past twenty years,new varieties of winter rapeseed showed upward trend in average yield,the yield level in Huang-huai group was higher than other groups.The changes of average effective pods per plant were not significant in any group,but the number of grain per pod and 1 000-grain weight showed increase trend.However,the increment of grains per pod in three Yangtze River groups was higher than that in Huang-Huai River group,while the increment of 1 000-grain weight was just opposite.The incidence rate of Sclerotinia sclerotiorum and viral disease in new varieties of winter rapeseed obviously decreased,and the incidence rate of S.sclerotiorum decreased lower than 5%.Genetic improvement for winter rapeseed should be focus on the number of grain per pod and 1 000-grain weight in the future,and yield level of new varieties in all four groups is expected to increase.展开更多
This study was to analyze the mineral elements in famous tea varieties in Sichuan Province. Eighteen mineral elements in the samples of 13 famous tea varieties in Sichuan Province were measured via related instruments...This study was to analyze the mineral elements in famous tea varieties in Sichuan Province. Eighteen mineral elements in the samples of 13 famous tea varieties in Sichuan Province were measured via related instruments. The results showed, of all the 18 measured samples, that the contents of K, P, S, Ca and Mg were relatively higher（ 〉1 500 mg/kg） in famous tea varieties in Sichuan Province, while those of Ba, Cr, V, Co and Se were relatively lower（ 〈 10 mg/kg） ; compared to common green tea, the famous tea varieties in Sichuan Province contained higher contents of K, Zn, P, Na, Ni, Cu, S, Se and Co（0.38% -115.65% higher than that in common green tea）, and lower contents of Mg, Mn, AI, Ca, V, Rb, Fe and Cr（7.20% -46.67% lower than that in common green tea）; of the 13 tested tea varieties, Hongyanyingchun, Yongchuanxiuya and Qingchengxueya were rich in mineral elements, while Yuchengyunwu and Yuqiancha lacked in mineral elements. The re- suits show that Hongyanyingchun, Yongchuanxiuya and Qingchengxueya are the elites in the famous tea varieties in Sichuan Province.展开更多
The agronomic and qualitative traits of 17 alfalfa varieties were analyzed in field and lab from 2006 to 2008, and these traits were evaluated by principal component analysis and cluster analysis. A total of 10 main t...The agronomic and qualitative traits of 17 alfalfa varieties were analyzed in field and lab from 2006 to 2008, and these traits were evaluated by principal component analysis and cluster analysis. A total of 10 main traits were classified as five factors： growth factor, quality factor, stem and leaf factors, plant factor and yield factor. These five factors and their correlation were selected for breeding. These 17 varieties can be divided into five clusters. The domestic varieties have better agronomic traits, while the introduced ones have better qualitative traits.展开更多
[Objective] The aim was to study the varietal characteristics of six new varieties of high biomass sugarcanes for sugar and energy namely GT02-833,GT97-69,GT02-351,GT03-2287,B9 and GT02-770,as well as the nutrition ch...[Objective] The aim was to study the varietal characteristics of six new varieties of high biomass sugarcanes for sugar and energy namely GT02-833,GT97-69,GT02-351,GT03-2287,B9 and GT02-770,as well as the nutrition characteristics of them under drip irrigation conditions. [Method] Industrial and agronomic characters,total N,total P,total K and chlorophyll content were determined. [Result] Cane yield,total biomass yield and sugar content of six varieties were more than 180,200 and 25 t/hm2 respectively,which were higher than that of the control Xintaitang 22. The total nitrogen and total phosphorus contents of six varieties were high and persistent from Jul to Nov,but they decreased sharply in Dec. Total potassium content of all varieties increased from Jul to Dec. Chlorophyll content of all varieties were high from Aug to Oct,but they decreased sharply in Nov. Total nitrogen,total phosphorus and total potassium content of GT02-833,GT97-69 and B9 were higher than that of CK. [Conclusion] GT02-833,GT97-69 and B9 had characteristic of efficient use of nutrients,thus should be extended as elite varieties.展开更多
[Objective] The aim was to investigate the expression level of recombinant gene P1-2A3C of FMDV Asia I in different Bombyx mori varieties,so as to screen out the B.mori varieties suitable for the foreign gene expressi...[Objective] The aim was to investigate the expression level of recombinant gene P1-2A3C of FMDV Asia I in different Bombyx mori varieties,so as to screen out the B.mori varieties suitable for the foreign gene expression.[Method] The recombinant B.mori baculovirus rBmNPV（P1-2A3C） are injected into pupae of original species and hybrids of B.mori respectively.Then,the expression of antigen is detected by ELISA method and compared.[Result] The expression level of P1-2A3C significantly differed in different B.mori varieties,in which,the hybrids of Qiufeng×TQ78 and Qiufeng×Sijiaojian could be considered as the effective bioreactors for high-level expression of foreign genes.[Conclusion] This study provided the basis for breeding special B.mori varieties which can highly express target protein of Asia I FMDV.展开更多
[Objective] The aim was to screen varieties of Phaseolus vulgaris L.for cultivation in arid,semi-arid areas.[Method] The cultivation experiments of seven varieties of P.vulgaris under dry farming conditions were carri...[Objective] The aim was to screen varieties of Phaseolus vulgaris L.for cultivation in arid,semi-arid areas.[Method] The cultivation experiments of seven varieties of P.vulgaris under dry farming conditions were carried out in typical dry farming agriculture region Yangqu County in North China.[Result] The plants of Teyoutejiadou,Chaojiwujing and Xinxinyichiqingyuanlong were relatively strong;the growth rate of Aifeng,Jingxuanjiadouwang and Chaochangsijidou was relatively rapid;the transpiration rate of functional leaves of Aifeng was the lowest.The yield of Tianma 95-33 jiadouwang was significant higher than that of other varieties,the unit yield was up to 36.33 t/hm2,which was 1.39 times higher than that of Aifeng and 1.9 times higher than that of Xinxinyichiqingyuanlong;followed by the yield of Aifeng（26.07 t/hm2）,which was 1.37 times higher than that of Xinxinyichiqingyuanlong.[Conclusion] The yield of Tianma 95-33 jiadouwang and Aifeng was relatively high,as well as the protein content,indicating that they were suitable to be applied and cultivated in the experimental plot and surrounding areas.展开更多
[Objective] Taking the characteristic of flower diameter of Tagetes L.as an example,this study aimed to select example varieties used in the DUS Test Guideline of Tagetes L.[Method] Two continuous years of measurement...[Objective] Taking the characteristic of flower diameter of Tagetes L.as an example,this study aimed to select example varieties used in the DUS Test Guideline of Tagetes L.[Method] Two continuous years of measurements of flower diameter of 25 varieties were collected and then analyzed by using the box plot to illustrate the uniformity and stability of flower diameter of each variety.[Result] According to the information of variability,distribution symmetry of measurements and outliers of flower diameter of varieties provided by box plots,variety 16,2 and 4 were selected as the example varieties for the three expression states with respective flower diameter of 3.0-4.4,6.0-7.4 and 9.0-10.4 cm.[Conclusion] The box plot is an efficient method for the general analysis of varieties,which provides information covering the actual and possible expression range,median and outliers of measurements of flower diameter of each variety.It also provides references for selecting example varieties for other quantitative characteristics and evaluating the quality of varieties.展开更多
[Objective] The aim was to screen litchi varieties suitable for local production in Vietnam. [Method] The fruit botanical and quality characteristics of the seven litchi varieties introduced into Northern Mountainous ...[Objective] The aim was to screen litchi varieties suitable for local production in Vietnam. [Method] The fruit botanical and quality characteristics of the seven litchi varieties introduced into Northern Mountainous Agriculture and Forestry Science Institute of Vietnam Academy of Agriculture Sciences were compared and analyzed. [Result] Three varieties with good general qualities including Lai Phu Ho,Thach Binh and Hung Long which were suitable to be cultivated in the local area were selected. In addition,Phu Dong was the available,early-maturing germplasm resource. [Conclusion] This research will provide reference for litchi production and breeding in northern mountainous area.展开更多
[Objective] The aim was to screen longan varieties suitable for local production in Vietnam.[Method] The fruit botanical characteristics and quality characteristics of longan varieties introduced into Northern Mountai...[Objective] The aim was to screen longan varieties suitable for local production in Vietnam.[Method] The fruit botanical characteristics and quality characteristics of longan varieties introduced into Northern Mountainous Agriculture and Forestry Science Institute of Vietnam Academy of Agriculture Sciences were compared and analyzed.[Result] Two varieties with good general qualities including PMP6 and PHS1-1 which were suitable to be cultivated in the local area were selected.In addition,Phu Dong was the available processed germplasm resource.[Conclusion] This research will provide reference for longan production and breeding in Northern Mountainous.展开更多
[Objective] This research aimed to optimize continuously the highly efficient regeneration system of Anthurium andraeanum. [Method] The leaves and petioles of four A. andraeanum varieties were used as explants to inve...[Objective] This research aimed to optimize continuously the highly efficient regeneration system of Anthurium andraeanum. [Method] The leaves and petioles of four A. andraeanum varieties were used as explants to investigate the differences in primary callus induction among different A. andraeanum varieties. [Result]The callus formation capacity of SAM and SST was stronger than that of SDM and SHG. Among the four varieties, the leaf regeneration capacity of SAM, SDM and SHG was stronger than the corresponding petiole regeneration capacity. However,the petiole regeneration capacity of SST was stronger. The optimum medium for petiole callus induction of SST was 1/2 MS ＋ TDZ 4.0 mg/L ＋ 2, 4-D 0.2 mg/L with induction rate of 87.5%; the optimum medium for leaf callus induction of SAM was 1/2 MS ＋ TDZ 2.0 mg/L ＋ 2, 4-D 0.2 mg/L with induction rate more than90%; the optimum medium for leaf callus induction of SDM and SHG was all 1/2MS ＋ ZT 2.0 mg/L ＋ 2, 4-D 0.2 mg/L with induction rates of 59.34% and 79.63%,respectively. [Conclusion] In addition to variety differences, the differences in differentiation ability among different types of calluses should be also taken into account in the establishment and optimization of tissue culture and rapid propagation technology system of A. andraeanum.展开更多
基金financially supported by the National Key Research and Development Program of China(2021YFD1601102)by a key joint grant for regional innovation from the National Natural Science Foundation of China(U19A2034)+2 种基金a key grant for University Synergy Innovation Program of Anhui Province(GXXT-2019-49)a grant from the China Agriculture Research System of MOF and MARA(CARS-19)a grant for supporting an animal core facility in Anhui Agricultural University from the Department of Sciences and Technology of Anhui Province.
文摘Currently,cultivated tea plants are classified into three varieties,namely,Camellia sinensis var.sinensis,C.sinensis var.assamica,and C.sinensis var.kucha.Three tea varieties made green teas(TVGTs)are widely consumed worldwide.However,a comparative investigation of the beneficial effects,mechanism,and characteristic compounds of TVGTs has not been reported.Here,three representative tea plant varieties,namely,C.sinensis var.sinensis cv.Fuding(FD),C.sinensis var.assamica cv.Yunkang 10(YK),and C.sinensis var.kucha(KC),planted in the same garden,were used to make green teas utilizing the same standard procedure.Our findings show that the TVGTs effectively improved hyperglycemia,obesity,dyslipidemia,fatty liver,and mesenteric artery(MA)hypercontractility in mice with diabetes and obesity induced by a high-fat diet(HFD)after 11-and 22-week interventions,with YK being the most effective at 22 weeks.Liver lipidomics indicated that the TVGTs restored the glycerophospholipid and sphingolipid balance and reduced triglycerides,with YK demonstrating superior effects.The TVGTs,particularly YK,suppressed triglyceride synthesis through the ARV1-FXR-SHP-SREBP-1c pathway.A chemical profile analysis revealed that YK green tea had enriched active compounds,including caffeine,quinic acid,L-theanine,gallic acid,and catechins,compared with FD and KC green teas,which may contribute to ameliorating diabetic dyslipidemia via synergistic action.As a representative tea variety of C.sinensis var.assamica,YK green tea was found to be superior to the other two green teas in preventing and treating diabetic dyslipidemia,especially with long term consumption.These data provide important information for tea plant breeders and tea consumers.
基金funded by the Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding,China(2021C02064-4)the Zhejiang Province“Three Rural and Nine Party”Science and Technology Cooperation Plan Project,China(2023SNJF002).
文摘Efficient nitrogen management is crucial for developing sustainable strategies aimed at enhancing yield while mitigating negative environmental impacts.However,research focusing on this aspect in the production of fresh maize is limited.Therefore,this study analyzed the effects of nitrogen application rates on the yields of 40 sweet and 44 waxy maize varieties at five sites in Zhejiang Province,China,from 2015 to 2019.The nitrogen application rates were categorized as either relatively high(RHN,>300 kg ha^(-1) for sweet maize and>320 kg ha^(-1) for waxy maize)or relatively low(RLN).An increase in nitrogen application rates significantly reduced nitrogen fertilizer partial productivity in both sweet and waxy maize(R^(2)=0.616,P<0.01;R^(2)=0.643,P<0.01),indicating that the optimum nitrogen application rates in this study might be the lowest values(160 kg ha^(-1) for sweet maize and 180 kg ha^(-1) for waxy maize).The kernel number per ear of sweet maize had a potentially more significant impact on fresh grain yield than the 1,000-fresh kernel weight under both RLN and RHN.In waxy maize,1,000-kernel weight contributed more to fresh grain yield under RLN,while kernel number per ear and 1,000-kernel weight cooperatively affected the yield under RHN.This study found that sweet maize required taller plant and ear heights,along with an optimal ear-plant height ratio,to enhance dry matter accumulation and increase source size,particularly under RLN,and to ultimately achieve a higher fresh grain yield.In contrast,a lower ear height and ear-plant height ratio in waxy maize probably contributed more to the greater kernel number and weight under RLN,likely due to a lower ear height which can reduce the distance between sink and source,enabling more efficient photoassimilate allocation to the ear.
文摘The protection system for traditional Chinese medicine(TCM)varieties,as an important policy tool to promote the development of TCM,has a long history of over 30 years,from the promulgation of the“Regulations on the Protection of Traditional Chinese Medicine Varieties”in 1992 to the comprehensive revision of the draft for soliciting opinions in 2022.The TCM protection system evolves to meet the needs of innovative development of TCM.This paper reviews the policy developments in TCM varieties protection,collates protection data(1993 to 2024),and analyzes enterprises application strategies amid impending regulatory changes.
基金Supported by National Natural Science Foundation of China(Grant No.12475002).
文摘In this paper,we shall study structures of even lattice vertex operator algebras by using the geometry of the varieties of their semi-conformal vectors.We first give the varieties of semi-conformal vectors of a family of vertex operator algebras V_(√kA_(1)) associated to rank-one positive definite even lattices √kA_(1) for arbitrary positive integers k to characterize these even lattice vertex operator algebras.In such a family of lattice vertex operator algebras V_(√kA_(1)),the vertex operator algebra V_(√2A_(1)) is different from others.Hence we describe the varieties of semi-conformal vectors of V_(√2A_(1)) and the fixed vertex operator subalgebra V^(+)√2A_(1).Moreover,as applications,we study the relations between vertex operator algebras V_(√kA_(1) )and L_(sl_(2))(k,0)for arbitrary positive integers k by the viewpoint of semi-conformal homomorphisms of vertex operator algebras.For case k=2,in the series of rational simple affine vertex operator algebras L_(sl_(2))(k,0)for positive integers k,we show that L_(sl_(2))(2,0)is a unique frame vertex operator algebra with rank 3.
文摘To improve the economic benefits and farmers’enthusiasm of Brassica napus production,this study compared the agronomic traits,economic traits,and incomes from vegetable and oilseed among five early maturing varieties of Brassica napus,thereby selecting the suitable materials for breeding the varieties for both vegetable and oil.The results showed that all of the five varieties had low erucic acid in oil and low glucosinolate in rapeseed meal.The economic benefits of the varieties for vegetable and oil were generally higher than those of the varieties for only oil.‘CNT01’had the best economic benefits,with the vegetable yield of 8175.3 kg/hm^(2),the rapeseed yield of 2476.5 kg/hm^(2),the vegetable income of 14859.0 yuan/hm^(2),the rapeseed income of 32701.2 yuan/hm^(2),and the net income of 35560.2 yuan/hm^(2).‘CNZ01’was selected as the variety with highest oil quality,with the rapeseed yield of 2712.6 kg/hm^(2) and the net income of 11775.6 yuan/hm^(2).In conclusion,‘CNT01’was selected as the variety for both vegetable and oil.
文摘RAPD assessment of genetic variations in 33 varieties of banana (Musa nana Lour.) was carried out. Eighteen primers were screened from 249 10 bp arbitrary primers, and a total of 192 DNA bands were amplified, among which 183 (95.31%) were polymorphic. The average number of DNA bands amplified by each primer was 10.67, and the average genetic distance among 33 varieties was 0.3412. Based on UPGMA cluster analysis of 192 DNA bands amplified by 18 primers a DNA molecular dendrogram was established for 33 varieties of banana in China, which divided the 33 varieties into four groups: group A, B, C and D. Group A included 20 varieties, group B included 5 varieties, group C included 2 varieties and group D included 6 varieties. Group A could be divided into 3 sub-groups: A1, A2 and A3. The molecular foundation of genetic diversity of banana was also explored.
文摘Based on the results of the national regional trail for winter rapeseed in four groups,including the upper reaches,middle reaches and lower reaches of Yangtze River and Huang-Huai region in the past twenty years,new varieties of winter rapeseed showed upward trend in average yield,the yield level in Huang-huai group was higher than other groups.The changes of average effective pods per plant were not significant in any group,but the number of grain per pod and 1 000-grain weight showed increase trend.However,the increment of grains per pod in three Yangtze River groups was higher than that in Huang-Huai River group,while the increment of 1 000-grain weight was just opposite.The incidence rate of Sclerotinia sclerotiorum and viral disease in new varieties of winter rapeseed obviously decreased,and the incidence rate of S.sclerotiorum decreased lower than 5%.Genetic improvement for winter rapeseed should be focus on the number of grain per pod and 1 000-grain weight in the future,and yield level of new varieties in all four groups is expected to increase.
文摘This study was to analyze the mineral elements in famous tea varieties in Sichuan Province. Eighteen mineral elements in the samples of 13 famous tea varieties in Sichuan Province were measured via related instruments. The results showed, of all the 18 measured samples, that the contents of K, P, S, Ca and Mg were relatively higher（ 〉1 500 mg/kg） in famous tea varieties in Sichuan Province, while those of Ba, Cr, V, Co and Se were relatively lower（ 〈 10 mg/kg） ; compared to common green tea, the famous tea varieties in Sichuan Province contained higher contents of K, Zn, P, Na, Ni, Cu, S, Se and Co（0.38% -115.65% higher than that in common green tea）, and lower contents of Mg, Mn, AI, Ca, V, Rb, Fe and Cr（7.20% -46.67% lower than that in common green tea）; of the 13 tested tea varieties, Hongyanyingchun, Yongchuanxiuya and Qingchengxueya were rich in mineral elements, while Yuchengyunwu and Yuqiancha lacked in mineral elements. The re- suits show that Hongyanyingchun, Yongchuanxiuya and Qingchengxueya are the elites in the famous tea varieties in Sichuan Province.
基金Supported by National Basic Research Program of China ( 973 Program) ( 2007CB108906)~~
文摘The agronomic and qualitative traits of 17 alfalfa varieties were analyzed in field and lab from 2006 to 2008, and these traits were evaluated by principal component analysis and cluster analysis. A total of 10 main traits were classified as five factors： growth factor, quality factor, stem and leaf factors, plant factor and yield factor. These five factors and their correlation were selected for breeding. These 17 varieties can be divided into five clusters. The domestic varieties have better agronomic traits, while the introduced ones have better qualitative traits.
基金Supported by Specific Foundation for Basic Application Research of Guangxi Province (Gui 0991014, 0778006-2)Specific Foundation for Basic Scientific Research of Guangxi Sugarcane Research Institute (G2009012, G2009005, G2008006, G2010004)Sugarcane Breeding Special Project of National Science and Technology Support Program (2007BAD30B02)~~
文摘[Objective] The aim was to study the varietal characteristics of six new varieties of high biomass sugarcanes for sugar and energy namely GT02-833,GT97-69,GT02-351,GT03-2287,B9 and GT02-770,as well as the nutrition characteristics of them under drip irrigation conditions. [Method] Industrial and agronomic characters,total N,total P,total K and chlorophyll content were determined. [Result] Cane yield,total biomass yield and sugar content of six varieties were more than 180,200 and 25 t/hm2 respectively,which were higher than that of the control Xintaitang 22. The total nitrogen and total phosphorus contents of six varieties were high and persistent from Jul to Nov,but they decreased sharply in Dec. Total potassium content of all varieties increased from Jul to Dec. Chlorophyll content of all varieties were high from Aug to Oct,but they decreased sharply in Nov. Total nitrogen,total phosphorus and total potassium content of GT02-833,GT97-69 and B9 were higher than that of CK. [Conclusion] GT02-833,GT97-69 and B9 had characteristic of efficient use of nutrients,thus should be extended as elite varieties.
基金Supported by863Project for Development and Production of New FMDV accine for Livestock(2011AA10A211)Fund for Agricultural Since and Technology Achievements Transformation(2009GB23260437)~~
文摘[Objective] The aim was to investigate the expression level of recombinant gene P1-2A3C of FMDV Asia I in different Bombyx mori varieties,so as to screen out the B.mori varieties suitable for the foreign gene expression.[Method] The recombinant B.mori baculovirus rBmNPV（P1-2A3C） are injected into pupae of original species and hybrids of B.mori respectively.Then,the expression of antigen is detected by ELISA method and compared.[Result] The expression level of P1-2A3C significantly differed in different B.mori varieties,in which,the hybrids of Qiufeng×TQ78 and Qiufeng×Sijiaojian could be considered as the effective bioreactors for high-level expression of foreign genes.[Conclusion] This study provided the basis for breeding special B.mori varieties which can highly express target protein of Asia I FMDV.
基金Supported by Water-saving and Efficient Model Research of DryLand Vegetable Planting(2007BAD88B03-3-2)~~
文摘[Objective] The aim was to screen varieties of Phaseolus vulgaris L.for cultivation in arid,semi-arid areas.[Method] The cultivation experiments of seven varieties of P.vulgaris under dry farming conditions were carried out in typical dry farming agriculture region Yangqu County in North China.[Result] The plants of Teyoutejiadou,Chaojiwujing and Xinxinyichiqingyuanlong were relatively strong;the growth rate of Aifeng,Jingxuanjiadouwang and Chaochangsijidou was relatively rapid;the transpiration rate of functional leaves of Aifeng was the lowest.The yield of Tianma 95-33 jiadouwang was significant higher than that of other varieties,the unit yield was up to 36.33 t/hm2,which was 1.39 times higher than that of Aifeng and 1.9 times higher than that of Xinxinyichiqingyuanlong;followed by the yield of Aifeng（26.07 t/hm2）,which was 1.37 times higher than that of Xinxinyichiqingyuanlong.[Conclusion] The yield of Tianma 95-33 jiadouwang and Aifeng was relatively high,as well as the protein content,indicating that they were suitable to be applied and cultivated in the experimental plot and surrounding areas.
基金Supported by the Special Fund for Agro-scientific Research in the Public Interest(200903008-14)the National "948" Project(2009-Z11)~~
文摘[Objective] Taking the characteristic of flower diameter of Tagetes L.as an example,this study aimed to select example varieties used in the DUS Test Guideline of Tagetes L.[Method] Two continuous years of measurements of flower diameter of 25 varieties were collected and then analyzed by using the box plot to illustrate the uniformity and stability of flower diameter of each variety.[Result] According to the information of variability,distribution symmetry of measurements and outliers of flower diameter of varieties provided by box plots,variety 16,2 and 4 were selected as the example varieties for the three expression states with respective flower diameter of 3.0-4.4,6.0-7.4 and 9.0-10.4 cm.[Conclusion] The box plot is an efficient method for the general analysis of varieties,which provides information covering the actual and possible expression range,median and outliers of measurements of flower diameter of each variety.It also provides references for selecting example varieties for other quantitative characteristics and evaluating the quality of varieties.
基金Supported by Introduction of Overseas Tropic Crop Germplasm Resources (948 Program of China)(2010-G2-08)a Grant from Modern Agricultural Industry Technology System Construction Program(nycytx-32-17)~~
文摘[Objective] The aim was to screen litchi varieties suitable for local production in Vietnam. [Method] The fruit botanical and quality characteristics of the seven litchi varieties introduced into Northern Mountainous Agriculture and Forestry Science Institute of Vietnam Academy of Agriculture Sciences were compared and analyzed. [Result] Three varieties with good general qualities including Lai Phu Ho,Thach Binh and Hung Long which were suitable to be cultivated in the local area were selected. In addition,Phu Dong was the available,early-maturing germplasm resource. [Conclusion] This research will provide reference for litchi production and breeding in northern mountainous area.
基金Supported by Introduction of Overseas Tropic Crops Germplasm Resources(948Program of China)(2010-G2-08)a Program for Construction of Modern Agriculture Industrial Technology System(nycytx-32-17)~~
文摘[Objective] The aim was to screen longan varieties suitable for local production in Vietnam.[Method] The fruit botanical characteristics and quality characteristics of longan varieties introduced into Northern Mountainous Agriculture and Forestry Science Institute of Vietnam Academy of Agriculture Sciences were compared and analyzed.[Result] Two varieties with good general qualities including PMP6 and PHS1-1 which were suitable to be cultivated in the local area were selected.In addition,Phu Dong was the available processed germplasm resource.[Conclusion] This research will provide reference for longan production and breeding in Northern Mountainous.
文摘[Objective] This research aimed to optimize continuously the highly efficient regeneration system of Anthurium andraeanum. [Method] The leaves and petioles of four A. andraeanum varieties were used as explants to investigate the differences in primary callus induction among different A. andraeanum varieties. [Result]The callus formation capacity of SAM and SST was stronger than that of SDM and SHG. Among the four varieties, the leaf regeneration capacity of SAM, SDM and SHG was stronger than the corresponding petiole regeneration capacity. However,the petiole regeneration capacity of SST was stronger. The optimum medium for petiole callus induction of SST was 1/2 MS ＋ TDZ 4.0 mg/L ＋ 2, 4-D 0.2 mg/L with induction rate of 87.5%; the optimum medium for leaf callus induction of SAM was 1/2 MS ＋ TDZ 2.0 mg/L ＋ 2, 4-D 0.2 mg/L with induction rate more than90%; the optimum medium for leaf callus induction of SDM and SHG was all 1/2MS ＋ ZT 2.0 mg/L ＋ 2, 4-D 0.2 mg/L with induction rates of 59.34% and 79.63%,respectively. [Conclusion] In addition to variety differences, the differences in differentiation ability among different types of calluses should be also taken into account in the establishment and optimization of tissue culture and rapid propagation technology system of A. andraeanum.
