Orah is a hybrid of ＂Temple＂ tangor and ＂Dancy＂ tangerine, and due to its excellent performance in cultivation in Wuming of Guangxi Province for three years, it has been popularized in Guangxi, Chongqing, Sichuan ...Orah is a hybrid of ＂Temple＂ tangor and ＂Dancy＂ tangerine, and due to its excellent performance in cultivation in Wuming of Guangxi Province for three years, it has been popularized in Guangxi, Chongqing, Sichuan and Yunnan rapidly, with a planting area over 130 000 hm^2. However, there also have been some problems existing in practical production, such as leaf yellowing and canker. The causes for leaf yellowing mainly include the physiologic type and the diseases and pests type. This paper analyzed the causes and put forwards corresponding countermeasures.展开更多
In order to promote the development of Orah mandarin industry in Guangxi and reduce the harm of citrus huanglongbing to Orah mandarin,the pathogen,characteristics,occurrence regularity and field symptoms of citrus hua...In order to promote the development of Orah mandarin industry in Guangxi and reduce the harm of citrus huanglongbing to Orah mandarin,the pathogen,characteristics,occurrence regularity and field symptoms of citrus huanglongbing were summarized,and scientific prevention and control measures were put forward,such as strict implementation of quarantine system,cultivation and use of disease-free seedlings,strengthening field management,timely control of psyllid,timely removal of diseased trees,etc.展开更多
Objectives:This study aims to isolate biocontrol microorganisms that inhibit Penicillium crustosum and explore their effects on microbial control and microbial diversity changes in P.crustosum causing postharvest deca...Objectives:This study aims to isolate biocontrol microorganisms that inhibit Penicillium crustosum and explore their effects on microbial control and microbial diversity changes in P.crustosum causing postharvest decay in Orah.Materials and Methods:The biocontrol effect was verified by confrontation experiments.The microbial diversity was analyzed using highthroughput sequencing technology.Metabolomic analysis was performed using liquid chromatography-tandem mass spectrometry(LC-MS/MS).Results:A strain of Meyerozyma guilliermondii PJ15 that strongly inhibited P.crustosum was isolated from the grape surface,which could effectively inhibit the mycelial growth and green spore production of P.crustosum.PJ15 could reduce the sourness and nutrient loss of Orah caused by P.crustosum.Compared with the control,PJ15 treatment increased the pH by 11.32%,the soluble protein content by 163.64%,the ascorbic acid content by 160.84%,and the total soluble sugar content by 203.53%.Microbial diversity analysis showed that PJ15 has a relatively small effect on the bacterial composition and diversity on the surface of Orah but has a significant impact on the fungal composition and diversity.It can increase the fungal diversity of Orah invaded by P.crustosum,increase the density of fungal interaction networks,and form a stronger coexisting survival interaction network.The vaccination of PJ15 downregulated the differential metabolite 5,6-epoxytetraene,which showed a positive correlation with P.crustosum and a negative correlation with PJ15.Conclusions:Meyerozyma guilliermondii PJ15 has a strong inhibitory effect on the growth of P.crustosum and has a significant impact on the fungal composition and diversity on the surface of Orah.It has potential for biocontrol of P.crustosum causing postharvest decay in Orah.展开更多
基金Supported by the National Citrus Industry System(CARS-27)Key Project of science and Technology from the Agriculture Department of Guangxi Province(201504,201307)+4 种基金Scientific and Technological Development Project of Nanning City(NC20152302,20142062)Scientific and Technological Project of Wuming County(201501217)Fund of Guangxi Academy of Agricultural Sciences(NCZ2015010,GNK2015JM20,GNK2014YZ36,GNK2015YT51,GNK2016YM47)Central Financial Project of Agriculture Technology Extension in 2015Project for the Construction of Good Fruit Variety Breeding Center in Guangxi~~
文摘Orah is a hybrid of ＂Temple＂ tangor and ＂Dancy＂ tangerine, and due to its excellent performance in cultivation in Wuming of Guangxi Province for three years, it has been popularized in Guangxi, Chongqing, Sichuan and Yunnan rapidly, with a planting area over 130 000 hm^2. However, there also have been some problems existing in practical production, such as leaf yellowing and canker. The causes for leaf yellowing mainly include the physiologic type and the diseases and pests type. This paper analyzed the causes and put forwards corresponding countermeasures.
基金Supported by Science and Technology Major Project of Guangxi Zhuang Autonomous Region(GK AA20108003-4,GK AA20108003-2,GKAA22036002)Science and Technology Major Project of Nanning City(20212141)+4 种基金Collaborative Innovation Project of Chinese Academy of Agricultural Sciences-Guangxi Academy of Agricultural Sciences(CAAS-GXAAS-XTCX2019026-2)Guangxi Special Crops Experimental Station(G TS202201)Jiangnan District Science and Technology Project of Nanning City(2020020102)GNK(2021YT051,2022JM32)Guangxi Citrus Huanglongbing Prevention and Control Engineering Technology Research Center。
文摘In order to promote the development of Orah mandarin industry in Guangxi and reduce the harm of citrus huanglongbing to Orah mandarin,the pathogen,characteristics,occurrence regularity and field symptoms of citrus huanglongbing were summarized,and scientific prevention and control measures were put forward,such as strict implementation of quarantine system,cultivation and use of disease-free seedlings,strengthening field management,timely control of psyllid,timely removal of diseased trees,etc.
基金funded by the Guangxi Key Research and Development Program(No.2021AB26001)The Central Government Guides Local Science and Technology Development Funds(No.2020ZYZX3027).
文摘Objectives:This study aims to isolate biocontrol microorganisms that inhibit Penicillium crustosum and explore their effects on microbial control and microbial diversity changes in P.crustosum causing postharvest decay in Orah.Materials and Methods:The biocontrol effect was verified by confrontation experiments.The microbial diversity was analyzed using highthroughput sequencing technology.Metabolomic analysis was performed using liquid chromatography-tandem mass spectrometry(LC-MS/MS).Results:A strain of Meyerozyma guilliermondii PJ15 that strongly inhibited P.crustosum was isolated from the grape surface,which could effectively inhibit the mycelial growth and green spore production of P.crustosum.PJ15 could reduce the sourness and nutrient loss of Orah caused by P.crustosum.Compared with the control,PJ15 treatment increased the pH by 11.32%,the soluble protein content by 163.64%,the ascorbic acid content by 160.84%,and the total soluble sugar content by 203.53%.Microbial diversity analysis showed that PJ15 has a relatively small effect on the bacterial composition and diversity on the surface of Orah but has a significant impact on the fungal composition and diversity.It can increase the fungal diversity of Orah invaded by P.crustosum,increase the density of fungal interaction networks,and form a stronger coexisting survival interaction network.The vaccination of PJ15 downregulated the differential metabolite 5,6-epoxytetraene,which showed a positive correlation with P.crustosum and a negative correlation with PJ15.Conclusions:Meyerozyma guilliermondii PJ15 has a strong inhibitory effect on the growth of P.crustosum and has a significant impact on the fungal composition and diversity on the surface of Orah.It has potential for biocontrol of P.crustosum causing postharvest decay in Orah.
