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Old Wives'Tales
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作者 Maria Chiu 《空中英语教室(初级版.大家说英语)》 2025年第6期11-14,50,51,56,共7页
Do you know any old wives'tales?You probably heard them from your mom.And she heard them from her mom.Many of these tales aren't true,but we talk about them anyway.For example,don't go outside with wet hai... Do you know any old wives'tales?You probably heard them from your mom.And she heard them from her mom.Many of these tales aren't true,but we talk about them anyway.For example,don't go outside with wet hair,or you'll catch a cold.If you drop food and pick it up in under five seconds,it is safe to eat.You should eat a lot when you have a cold,but only eat a little when you have a fever.And eating bread crusts makes your hair curly. 展开更多
关键词 old wivestalesyou eating bread crusts hair cold old wives tales fever bread crusts
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Functional Lactiplantibacillus plantarum P10 screened from Chinese traditional pickle showing application potential in steamed bread for in-situ bio-preservation and GABA-enrichment
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作者 Mengge Ma Yajuan Zhang +4 位作者 Dongchun Zhang Yi Chen Zhixin Wang Yingmin Jia Yawei Ning 《Food Science and Human Wellness》 2025年第1期190-202,共13页
Mold spoilage and nutrition enrichment are major concerns of Chinese steamed bread,and using functional lactic acid bacteria as starter to play the role of in-situ preservation and nutritional fortification was a prom... Mold spoilage and nutrition enrichment are major concerns of Chinese steamed bread,and using functional lactic acid bacteria as starter to play the role of in-situ preservation and nutritional fortification was a promising alternative.Hence,Lactiplantibacillus plantarum P10 capable of inhibiting spoilage microorganisms and producing γ-aminobutyric acid(GABA)(380 mg/L)was screened from Chinese pickle.Metabolomics analysis showed that P10 produced key antimicrobial metabolites mainly including ten organic acids,aldehyde,alkaloid.Besides,P10 might exhibit health beneficial effects such as degrading cholesterol,lowering blood glucose and reducing uric acid due to the production of deoxycholic acid and Ile-Pro-Ile,and the degradation of purine.Finally,the promising application potential of P10 was evidenced in steamed bread with extended shelf life,excellent anti-aging effect,and 24.5-fold enrichment of GABA.Conclusively,this investigation could provide scientific basis for the application of P10 as a functional starter in steamed bread. 展开更多
关键词 Lactiplantibacillus plantarum PRESERVATION STARTER Steamed bread Metabolomics
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Assessing the wheatgrass powder as a functional ingredient in steamed bread from the nutritional and techno-functional perspective
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作者 Muhammad Bilal Yisheng Du +3 位作者 Dandan Li Runqiang Yang Chong Xie Pei Wang 《Grain & Oil Science and Technology》 2025年第4期271-277,共7页
This study investigated the impact of wheatgrass powder(WGP)as a functional ingredient in steamed bread from the nutritional and techno-functional perspective.The addition of WGP significantly enhanced the antioxidant... This study investigated the impact of wheatgrass powder(WGP)as a functional ingredient in steamed bread from the nutritional and techno-functional perspective.The addition of WGP significantly enhanced the antioxidant capacity in a dose-dependent manner,attributed to its bioactive compounds,though thermal processing led to a reduction due to heat sensitivity.Physicochemical analysis revealed that WGP enrichment decreased moisture content(34.27% and 33.82% for 2.5%and 5.0%WGP vs.38.37% for control)and increased weight loss(1.45% and 1.52% for 2.5%and 5.0% WGP vs.1.27% for control),likely due to fiber-gluten competition for water,while water absorption capacity(WAC)improved with higher WGP levels(1.60 g/g and 1.92 g/g for 2.5% and 5.0% WGP vs.1.40 g/g for control).The microstructural analysis demonstrated that WGP disrupted the glutenstarch matrix,increasing porosity and reducing starch gelatinization,correlating with altered textural properties.Notably,WGP extended microbial shelf life by 48–72 h(delaying mold growth to 3–4 d vs.2 d in control),likely due to its anti-microbial bioactive constituents.Sensory evaluation indicated that WGP-enriched steamed bread achieved optimal consumer acceptance.These findings suggest that WGP is a promising functional ingredient for improving the nutritional and sensory quality of steamed bread,though optimizing processing conditions is crucial to mitigate the thermal degradation of antioxidants. 展开更多
关键词 Wheatgrass Steamed bread Antioxidant activity Microstructure Shelf life
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Adaptability of 2 cellulase producing strains Bacillus sp.SH and Aspergillus oryzae Y21 in whole wheat dough and impact on the quality of whole wheat bread
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作者 Yingli Liu Shengjie Zhong +4 位作者 Xiaoming Wei Maosi Fan Min Cai Zhengkai Wang Jing Wang 《Food Science and Human Wellness》 2025年第6期2403-2414,共12页
Compared to refined wheat flour,whole wheat flour contains higher nutrients,but its high content of dietary fiber can have a significant impact on the quality of the final product.Therefore,how to enable consumers to ... Compared to refined wheat flour,whole wheat flour contains higher nutrients,but its high content of dietary fiber can have a significant impact on the quality of the final product.Therefore,how to enable consumers to obtain health benefits from whole wheat flour and improve the processing performance of whole wheat products has become a concern.The purpose of this study is to apply 2 strains Bacillus sp.SH and Aspergillus oryzae Y21 with cellulase production capacity and study their adaptability in whole wheat dough.The results indicate that the addition of cellulase-producing strains enhanced the acid production ability of whole wheat dough,rapidly reduced its pH value and insoluble dietary fiber content,and significantly increased the water-soluble arabinoxylan and water-soluble dietary fiber content.During the fermentation process,the viscoelasticity of the dough decreased,free sulfhydryl content increased,wet gluten content decreased,and the degree of reduction was consistent with the degree of acidification.Moreover,the proteolytic activity of the dough was increased,and the hydrolysis of gliadin was the most extensive.SH showed a higher advantage and has been used in whole wheat bread making.Increasing the proportion of strain SH in whole wheat bread can improve the structural characteristics and texture of the bread.When SH(5×10~7 CFU/g)is added to whole wheat bread,its hardness,elasticity,chewiness,and resilience can be similar to those of bread made from control group wheat flour,far exceeding that of whole wheat bread without adding SH.The addition of cellulase producing strains has obvious advantages in the development of whole-wheat dough,and also promote the development of whole wheat fermented foods as staple foods. 展开更多
关键词 Whole wheat bread Dough properties FERMENTATION Dietary fiber STAINS
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Antifungal activity and potential mechanism of paeonol against Fusarium graminearum and the application on wheat grains and steamed bread
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作者 Yiming Zhang Hongying Xiao +2 位作者 Roland Ernest Poms Qian Li Renyong Zhao 《Grain & Oil Science and Technology》 2025年第2期109-117,共9页
Fusarium graminearum(F.graminearum)is a severe phytopathogen threatening agriculture production and food security.Paeonol,serves as a plant-derived natural component,is a promising antifungal agent.At a concentration ... Fusarium graminearum(F.graminearum)is a severe phytopathogen threatening agriculture production and food security.Paeonol,serves as a plant-derived natural component,is a promising antifungal agent.At a concentration of 0.3125 mg/mL,paeonol was adequate to fully inhibit the growth of F.graminearum mycelia within 3 days.Fourier-Transform Infrared Spectroscopy(FT-IR)analysis showed that paeonol had no impact on the outer surface of F.graminearum cell walls.While propidium iodide staining,extracellular conductivity,and pH value measurements demonstrated that paeonol disrupted the cell membrane.Furthermore,lipid oxidation and osmotic stress responses were observed in F.graminearum treated with paeonol,resulting in a 47.23%rise in malondialdehyde(MDA)levels and a 515.43%increase in glycerol levels.Moreover,on the 7th day after exposure to paeonol treatment,the deoxynivalenol(DON)level was significantly reduced,measuring only onefifth of that in the control group.Finally,paeonol was shown to inhibit F.graminearum on wheat grains and steamed bread slices.These results,for the first time,revealed the inhibitory mode of action of paeonol against F.graminearum as reflected by disruption of cell membrane integrity,induction of lipid oxidation and osmotic pressure,as well as DON biosynthesis.Furthermore,this study provided scientific evidence for the potential applications of paeonol in agriculture and food industry. 展开更多
关键词 PAEONOL Fusarium graminearum Antifungal mechanism Wheat grains Steamed bread slices
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Effect of particle size of Flaxseed-based milk coproduct on the quality of dough and steamed bread
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作者 Jiahui Wang Huojiao Gan +6 位作者 Yan Tang Haichao He Mingkai Sun Yashu Chen Qianchun Deng Fenghong Huang Hu Tang 《Oil Crop Science》 2025年第3期259-269,共11页
The increased risk of chronic diseases has led to increasing importance of coarse foods in daily life,but the inclusion of new ingredients has a great degree of influence on the structural characteristics and sensory ... The increased risk of chronic diseases has led to increasing importance of coarse foods in daily life,but the inclusion of new ingredients has a great degree of influence on the structural characteristics and sensory qualities of the food.The effects of five different particle size variations on the physicochemical characteristics,dough,and steamed bread structure of Flaxseed-based milk coproduct(FMC)were investigated.As the particle size decreases,the structure of the dough becomes denser due to an increase in water retention capacity and dissolution capacity,weakening the competition for dough moisture and allowing for an increase in air-holding capacity.The reduction in particle size increased the specific volume of the steamed bread,a decrease in the spread ratio,and an optimization of hardness and elasticity,as well as an increase in consumer acceptance of the FMC steamed bread.However,it is not the smaller the particle size,the higher the quality of steamed bread,appropriate reduction of particle size can improve the quality of steamed bread.In addition,the addition of FMC reduces fat digestion.Therefore,the present study proposes a method to change the particle size of FMC to optimize the quality of the steamed bread and to reduce fat digestibility by adding FMC. 展开更多
关键词 Particle size Flaxseed-based milk coproduct Dough properties Steamed bread
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Progress of chromosome engineering mediated by asymmetric somatic hybridization 被引量:9
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作者 Guangmin Xia 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2009年第9期547-556,共10页
Plant somatic hybridization has progressed steadily over the past 35 years. Many hybrid plants have been generated from fusion combinations of different phylogenetic species, some of which have been utilized in crop b... Plant somatic hybridization has progressed steadily over the past 35 years. Many hybrid plants have been generated from fusion combinations of different phylogenetic species, some of which have been utilized in crop breeding programs. Among them, asymmetric hybrid, which usually contains a fraction of alien genome, has received more attention because of its importance in crop improvement. However, few studies have dealt with the heredity of the genome of somatic hybrid for a long time, which has limited the progress of this approach. Over recent ten years, along with the development of an effective cytogenetical tool "in situ hybridization (ISH)", asymmetric fusion of common wheat (Triticum aestivum L.) with different grasses or cereals has been greatly developed. Genetics, genomes, functional genes and agricultt, ral traits of wheat asymmetric hybrids have been subject to systematic investigations using gene cloning, genomic in situ hybridization (GISH) and molecular makers. The future goal is to fully elucidate the functional relationships among improved agronomic traits, the genes and underlying molecular mechanisms, and the genome dynamics of somatic introgression lines. This will accelerate the development of elite germplasms via somatic hybridization and the application of these materials in the molecular improvement of crop plants. 展开更多
关键词 asymmetric somatic hybrids GISH alien introgression wheat breading
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Study on Food-making Quality of Strong-gluten Wheat Varieties from Lime Concretion Black Soil Area in the Huanghuai Wheat Region 被引量:1
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作者 刘爱峰 程敦公 +4 位作者 李豪圣 宋健民 曹新有 赵振东 刘建军 《Agricultural Science & Technology》 CAS 2016年第6期1429-1431,1445,共4页
In this study, 13 strong-gluten wheat varieties screened by the Key Project of Modern Agricultural Industry Technology System "Study on Industrial Technology for Strong-gluten Wheat from Lime Concretion Black Soil Ar... In this study, 13 strong-gluten wheat varieties screened by the Key Project of Modern Agricultural Industry Technology System "Study on Industrial Technology for Strong-gluten Wheat from Lime Concretion Black Soil Area in the Huanghuai Wheat Region" were used as experimental materials to investigate their bread-making quality, noodle-making quality and other related characteristics. The results showed that more than half of the wheat varieties had better bread-making quality; the bread made from wheat with longer dough mixing time than 3.0 min had better texture, lighter color, and better taste. All these 13 strong-gluten wheat varieties showed good noodle-making quality in color, appearance, smoothness and taste; the differences between varieties were mainly found in palatability and viscoelasticity. Jimai 20, Xinong 979, Zhengmai 7698, Ji'nan 17 and Zhengmai 9023 exhibited excellent bread-making quality; Zhengmai 366, Jimai 20 and Xinong 979 displayed excellent noodle-making quality. Fresh dough sheets made from Zhengmai 366, Jimai 20 and Xinong 979 exhibited slight color variation within 24 h and high peak starch paste viscosity; dry and cooked noodles made from Zhengmai 366, Jimai 20 and Xinong 979 had good quality. 展开更多
关键词 Lime concretion black soil Strong-gluten wheat BREAD NOODLE QUALITY
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汉语“米”指称体系与英语“Bread”指称体系的对应 被引量:2
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作者 罗文翠 《中南大学学报(社会科学版)》 2003年第2期278-280,共3页
特定的自然环境产生特定的饮食文化,特定的饮食文化有与之相应的特定的语言表达形式,而不同的语言指称体系之间表现出一定的关联性。例如,中国大部分地区以"米"为主食,大部分英语国家以"bread"为主食,汉语"米&... 特定的自然环境产生特定的饮食文化,特定的饮食文化有与之相应的特定的语言表达形式,而不同的语言指称体系之间表现出一定的关联性。例如,中国大部分地区以"米"为主食,大部分英语国家以"bread"为主食,汉语"米"指称体系与英语"Bread"指称体系就显示出这种对应性。 展开更多
关键词 汉语 “米” 指称体系 英语 “Bread” 文化习语 词汇 主食 饮食文化 对应性
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体验融入营销的标本式透析——以“Bread Talk”为样本 被引量:3
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作者 胡鸿影 《东南传播》 2010年第10期116-118,共3页
本文以体验营销这一营销战略为切入点,结合Bread Talk的体验营销之道,试图从差异化、个性化、整合性三方面探讨体验营销的要点,揭示体验营销作为一种新兴的营销手段,对提升品牌价值所产生的深刻影响,为透视体验营销的效果提供一个有价... 本文以体验营销这一营销战略为切入点,结合Bread Talk的体验营销之道,试图从差异化、个性化、整合性三方面探讨体验营销的要点,揭示体验营销作为一种新兴的营销手段,对提升品牌价值所产生的深刻影响,为透视体验营销的效果提供一个有价值的视角。 展开更多
关键词 体验 营销 BREAD TALK
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Development of Bean Dreg Bread and Quality Evaluation
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作者 杨玉红 陈银霞 《Agricultural Science & Technology》 CAS 2016年第9期2207-2208,2215,共3页
The research compared differences between bean dreg breads and common breads from perspectives of sensory quality, texture and taste.
关键词 Bean dreg bread Quality evaluation Texture properties
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What is a Life?
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作者 黄锐 《语言教育》 2001年第11期14-16,共3页
Have you ever,at any onetime,had the feeling that life isbad,real bad,and you wish youwere in another situation?Youfind life make things difficult foryou,work sucks,life sucks,everything seems to go wrong...Read the f... Have you ever,at any onetime,had the feeling that life isbad,real bad,and you wish youwere in another situation?Youfind life make things difficult foryou,work sucks,life sucks,everything seems to go wrong...Read the following story...it may change your views aboutlife: 展开更多
关键词 THINGS FEELING SOMEONE everything story WRONG mother think BREAD SMILE
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Changes in Large Livestock Breeding Industry and Their Influences on Gross Output Value of Animal Husbandry in Guyuan City of Ningxia
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作者 Zhijun GE Liqiang TIAN +1 位作者 Yiyao LI Dongpu FENG 《Asian Agricultural Research》 2022年第1期6-10,共5页
[Objectives]The aim of this paper was to reveal the changes of large livestock industry and their influence on animal husbandry economy in Guyuan City of Ningxia.[Methods]The linear trend method was employed to quanti... [Objectives]The aim of this paper was to reveal the changes of large livestock industry and their influence on animal husbandry economy in Guyuan City of Ningxia.[Methods]The linear trend method was employed to quantify the change trends of the indicators for large livestock industry,and the ridge regression model was conducted to analyze their impacts on the gross output value of animal husbandry(GOVAH).[Results]The numbers of sold and slaughtered cattle and sheep in Guyuan presented a significant upward trend,while the number for hog had a significant downward trend,during 2000-2019.The GOVAH in Guyuan and its 5 counties had increased by 2-3 times in recent 20 years,which was mainly driven by large-scale livestock breeding.The cattle and sheep breeding sectors had positive effects on GOVAH,while the hog breeding sector had negative effect.[Conclusions]This study provides a reference for the structural adjustment and large-scale development of animal husbandry. 展开更多
关键词 Livestock breading industry Linear trend method Ridge regression model Guyuan City
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从心理语言学的角度看英语口语教学
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作者 戴聪腾 《外国语言文学》 1992年第Z2期86-88,共3页
英语口语教学必须从实际情况出发,同时必须遵循心理语言学所揭示的语言产生的规律。认识语言产生的内在规律,对指导口语教学具有重要意义。在心理语言学的文献中,有不少关于语盲产生模式之类的文章,其目的都在于阐明语言产生的过程是一... 英语口语教学必须从实际情况出发,同时必须遵循心理语言学所揭示的语言产生的规律。认识语言产生的内在规律,对指导口语教学具有重要意义。在心理语言学的文献中,有不少关于语盲产生模式之类的文章,其目的都在于阐明语言产生的过程是一个始于思想、而终于语言的过程。尽管这些模式的阐述方法不同,可是它们却有共同之处:它们均把语言产生的整个过程视为计划和实施计划两个部分(cf.Clark &Clark 1977;Foss & Hakes 1978;Steinberg 1982)。计划:当讲话者面临着一个语言环境时。 展开更多
关键词 心理语言学 讲话者 实施计划 思维现象 语音知识 句法方面 现代语言学研究 课堂气氛 等音 BREAD
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馒头保鲜技术研究进展 被引量:3
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作者 韩昊天 李向阳 吴澎 《食品与发酵工业》 CAS CSCD 北大核心 2019年第10期266-271,共6页
馒头作为我国主要的日常主食之一,在人们的饮食中具有不可替代的地位。馒头老化或变质后,口感会变差,营养价值降低,因此馒头的保鲜成为人们日益关注的问题。目前馒头保鲜主要有抗老化、抑菌和风味保持3个方面:通过添加保鲜剂的应用和抗... 馒头作为我国主要的日常主食之一,在人们的饮食中具有不可替代的地位。馒头老化或变质后,口感会变差,营养价值降低,因此馒头的保鲜成为人们日益关注的问题。目前馒头保鲜主要有抗老化、抑菌和风味保持3个方面:通过添加保鲜剂的应用和抗老化物质的添加来抑制淀粉的老化;运用物理、化学及生物方法抑制微生物对馒头的污染;改良制作工艺对馒头的风味进行改善和保持。该文总结分析了馒头保鲜技术的研究进展及发展趋势,指出存在的问题,提出了合理化建议,为今后馒头保鲜技术的发展提供理论参考。 展开更多
关键词 STEAMED BREAD PRESERVATION ANTI-AGING ANTIBACTERIAL FLAVOR retention
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想用我条件状语从句?那可是有条件的哟!
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作者 刘洪生 《中学生英语(初中版)》 2007年第8期22-22,共1页
如果一个句子充当另一个句子的状语,并且表示其发生的条件,那么这个句子就是一个条件状语从句。
关键词 状语从句 一般现在时 义句 ENOUGH BREAD UNLESS 主从句 think morrow tired
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英汉习语文化差异的对比研究
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作者 袁建伟 《河南农业》 2010年第12X期58-59,共2页
一、英语习语简介习语(Idiom)是语言发展的结晶,是语言使用者长期以来在生活中使用而形成的形式简洁且意思精辟的固定短语或短句。本文所要讨论的习语,主要包括俗语、谚语、俚语、格言和典故,汉语中还包括歇后语。英汉习语中都各自蕴含... 一、英语习语简介习语(Idiom)是语言发展的结晶,是语言使用者长期以来在生活中使用而形成的形式简洁且意思精辟的固定短语或短句。本文所要讨论的习语,主要包括俗语、谚语、俚语、格言和典故,汉语中还包括歇后语。英汉习语中都各自蕴含着丰富的文化信息,包含着大量的中英文化特色和文化背景。如果英汉语言学习者不了解英汉习语的真正文化内涵、背景及其文化差异,他们就很难理解和正确使用这些习语。 展开更多
关键词 文化知识 英汉习语 英语习语 语言学习 固定短语 BREAD 英美人 英汉民族 《哈姆雷特》 themselves
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广告英语中的双关语及其翻译 被引量:2
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作者 王紫娟 《上海翻译》 CSSCI 北大核心 1992年第3期29-30,共2页
双关语(pun),或称文字游戏,既可服务于严肃的文学主题,又可用于像广告语言这样轻松活泼的功能语言中。在广告里,双关语能逗乐读者,激发他们对产品的想象,进而记住该产品。这也就达到了广告撰写者吸引读者注意力的目的。 广告英语中运用... 双关语(pun),或称文字游戏,既可服务于严肃的文学主题,又可用于像广告语言这样轻松活泼的功能语言中。在广告里,双关语能逗乐读者,激发他们对产品的想象,进而记住该产品。这也就达到了广告撰写者吸引读者注意力的目的。 广告英语中运用双关语有几种基本手法,概括起来不外乎成语的妙用,歧义词的妙用,商标名的妙用以及同音异义词的妙用。 一、所谓成语的妙用,就是某一词条既是某一成语的一部分,又是一个具有其本身意义的词汇。翻译时要注意区分。请看下例: 1. You’ll go nuts for the nuts you get in Nux. It fills you up and gives you lota of go。 展开更多
关键词 广告英语 商标名 文字游戏 文学主题 轻松活泼 异义词 实义词 身体器官 BREAD 请看
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Nutritional evaluation of different cultivars of potatoes(Solanum tuberosum L.) from China by grey relational analysis(GRA) and its application in potato steamed bread making 被引量:23
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作者 ZHOU Liang MU Tai-hua +3 位作者 MA Meng-mei ZHANG Ruo-fang SUN Qing-hua XU Yan-wen 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2019年第1期231-245,共15页
Chemical composition(moisture,protein,starch,ash,fiber,fat),vitamins(vitamin C,vitamin B1,vitamin B2),total polyphenol content,antioxidant capacity,minerals,and amino acid of 14 potato cultivars in China were evaluate... Chemical composition(moisture,protein,starch,ash,fiber,fat),vitamins(vitamin C,vitamin B1,vitamin B2),total polyphenol content,antioxidant capacity,minerals,and amino acid of 14 potato cultivars in China were evaluated.The results indicated that all parameters varied significantly among different potato cultivars.The total starch,crude protein and fat content ranged between 57.42–67.83%,10.88–14.10% and 0.10–0.73% dry weight(DW),respectively.Moreover,the consumption of potato increased remarkably the dietary intake of vitamins,K,Mn and Cu.In addition,the chemical score of amino acid varied considerably between different cultivars,which ranged from 54(Neida 3 and Neida 41) to 71(Neida 34).Grey relational analysis(GRA) indicated that Neida 26 exhibited the most comprehensive nutritional values among potato cultivars,followed by Neida 42.Different potato flours had a significant effect on the quality parameters of potato steamed bread(PSB),Neida 26 and Neida 34 were more suitable for making PSB. 展开更多
关键词 POTATOES CULTIVARS NUTRITIONAL components grey relational analysis POTATO STEAMED BREAD
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The Effects of Dwarfing Genes (Rht-B1b, Rht-D1b, and Rht8) with Different Sensitivity to GA_3 on the Coleoptile Length and Plant Height of Wheat 被引量:14
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作者 TANG Na JIANG Ying +1 位作者 HE Bei-ru HU Yin-gang 《Agricultural Sciences in China》 CAS CSCD 2009年第9期1028-1038,共11页
Understanding the effects of wheat dwarfing genes on the coleoptile length and plant height is crucial for the proper utilization of dwarfing genes in the improvement of wheat yield. Molecular marker analysis combined... Understanding the effects of wheat dwarfing genes on the coleoptile length and plant height is crucial for the proper utilization of dwarfing genes in the improvement of wheat yield. Molecular marker analysis combined with pedigree information were used to classify wheat cultivars widely planted in major wheat growing regions in China into different categories based on the dwarfing genes they carried. The effects of the dwarfing genes with different sensitivity to gibberellins (GA3) on the coleoptile length and plant height were analyzed. Screening of 129 cultivars by molecular marker analysis revealed that 58 genotypes of wheat contained the dwarfing gene Rht-B1b, 24 genotypes of wheat contained Rht-D1b gene and 73 genotypes of wheat possessed Rht8 gene. In addition, among these 129 cultivars, 35 genotypes of wheat cultivars contained both Rht-B1b and Rht8 genes and 16 genotypes of wheat cultivars contained both Rht-D1b and Rht8 genes. Wheat cultivars with the dwarfing genes Rht-B1b or Rht-D1b were insensitive to GA3, while the cultivars with the dwarfing gene Rht8 were sensitive to GA3. Most of the wheat genotypes containing combination of Rht8 gene with either Rht-B1b or Rht-D1b gene were insensitive to GA3. The plant height was reduced by 24.6, 30.4, 28.2, and 32.2%, respectively, for the wheat cultivars containing Rht-B1b, Rht-D1b, Rht-B1b + Rht8, and Rht-D1b + Rht8 genes. The plant height was reduced by 14.3% for the wheat cultivar containing GA3-sensitive gene Rht8. The coleoptile length was shortened by 25.4, 31.3, 28.4 and 31.3%, respectively, in the wheat cultivars containing Rht-B1b, Rht-D1b, Rht-B1b +Rht8 and Rht-D1b + Rht8 genes, while the coleoptile length was shortened only by 6.2% for the wheat cultivar containing Rht8 gene. We conclude that GA3-insensitive dwarfing genes (Rht-B1b and Rht-D1b) are not suitable for the wheat improvement in dryland because these two genes have effect on reducing both plant height and coleoptile length. In contrast, GA3- sensitive dwarfing gene (Rht8) is a relatively ideal candidate for the wheat improvement since it significantly reduces the plant height of wheat, but has less effect on the coleoptile length. 展开更多
关键词 bread wheat dwarfing genes Rht-B1b Rht-D1b Rht8 coleoptile length plant height
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