Background:Plant height(PH)and fruit branch number(FBN)are important traits for improving yield and mechanical harvesting of cotton.In order to identify genes of PH and FBN in cotton germplasms to develop superior cul...Background:Plant height(PH)and fruit branch number(FBN)are important traits for improving yield and mechanical harvesting of cotton.In order to identify genes of PH and FBN in cotton germplasms to develop superior cultivars,quantitative trait loci(QTLs)for these traits were detected based on the phenotypic evaluation data in nine environments across four locations and 4 years and a previously reported genetic linkage map of an recombinant inbred line(RIL)population of upland cotton.Results:In total,53 QTLs of PH and FBN,were identified on 21 chromosomes of the cotton genome except chromosomes c02,c09-c11,and c22.For PH,27 QTLs explaining 3.81%–8.54%proportions of phenotypic variance were identified on 18 chromosomes except c02,c08-c12,c15,and c22.For FBN,26 QTLs explaining 3.23%–11.00%proportions of phenotypic variance were identified on 16 chromosomes except c02-c03,c06,c09-c11,c17,c22-c23,and c25.Eight QTLs were simultaneously identified in at least two environments.Three QTL clusters containing seven QTLs were identified on three chromosomes(c01,c18 and c21).Eleven QTLs were the same as previously reported ones,while the rest were newly identified.Conclusions:The QTLs and QTL clusters identified in the current study will be helpful to further understand the genetic mechanism of PH and FBN development of cotton and will enhance the development of excellent cultivars for mechanical managements in cotton production.展开更多
Verticillium wilt is the second serious vascular wilt caused by the phytopathogenic fungus Verticillium dahliae Kleb.It has distributed worldwide,causing serious yield losses and fiber quality reduction in cotton prod...Verticillium wilt is the second serious vascular wilt caused by the phytopathogenic fungus Verticillium dahliae Kleb.It has distributed worldwide,causing serious yield losses and fiber quality reduction in cotton production.The pathogen has developed different mechanisms like the production of cell wall degrading enzymes,activation of virulence genes and protein effectors to succeed in its in fection.Cott on plant has also evolved multiple mechanisms in response to the fungus infection,including a strong production of lignin and callose deposition to strengthen the cell wall,burst of reactive oxygen species,accumulation of defene hormones,expression of defense-related genes,and target-directed strategies like cross-kingdom RNAi for specific virulent gene silencing.This review summarizes the recent progress made over the past two decades in understanding the interactions between cotton plant and the pathogen Verticillium dahliae during the infection process.The review also discusses the achievements in the control practices of cotton verticillium wilt in recent years,including cultivation practices,biological control,and molecular breeding strategies.These studies reveal that effective management strategies are needed to control the disease,while cultural practices and biological control approaches show promising results in the future.Furthermore,the biological control approaches developed in recent years,including antagonistic fungi,endophytic bacteria,and host induced gene sile ncing strategies provide efficie nt choices for in teg rated disease management.展开更多
基金funded by the National Key R&D Program of China(2017YFD01016002016YFD0100505)+1 种基金the Fundamental Research Funds for Central Research Institutes(Y2017JC48)the Natural Science Foundation of China(31371668,31471538)。
文摘Background:Plant height(PH)and fruit branch number(FBN)are important traits for improving yield and mechanical harvesting of cotton.In order to identify genes of PH and FBN in cotton germplasms to develop superior cultivars,quantitative trait loci(QTLs)for these traits were detected based on the phenotypic evaluation data in nine environments across four locations and 4 years and a previously reported genetic linkage map of an recombinant inbred line(RIL)population of upland cotton.Results:In total,53 QTLs of PH and FBN,were identified on 21 chromosomes of the cotton genome except chromosomes c02,c09-c11,and c22.For PH,27 QTLs explaining 3.81%–8.54%proportions of phenotypic variance were identified on 18 chromosomes except c02,c08-c12,c15,and c22.For FBN,26 QTLs explaining 3.23%–11.00%proportions of phenotypic variance were identified on 16 chromosomes except c02-c03,c06,c09-c11,c17,c22-c23,and c25.Eight QTLs were simultaneously identified in at least two environments.Three QTL clusters containing seven QTLs were identified on three chromosomes(c01,c18 and c21).Eleven QTLs were the same as previously reported ones,while the rest were newly identified.Conclusions:The QTLs and QTL clusters identified in the current study will be helpful to further understand the genetic mechanism of PH and FBN development of cotton and will enhance the development of excellent cultivars for mechanical managements in cotton production.
基金China Agriculture Research System of MOF and MARA,the Natural Science Foundation of China(32070560,31471538,and 31371668)Special Project of Fundamental Research Funds for the National Public Welfare Institutio ns of Institute of Cotton Research of Chinese Academy of Agricultural Sciences(1610162021004)+3 种基金the National Key R&D Program of China(2017YFD0101603-11,2016YFD0100500,2016YFD0101401)the Agricultural Science an dlechnology Innovation Program for CAAS(CAAS-ASTIP-ICRCAAS)the National High Technology Research and Development Program of China(2012AA101108 and 2009AA101104)the Central Level of the Scientific Research Institutes for Basic R&D Special Fund Business(1610162014008).
文摘Verticillium wilt is the second serious vascular wilt caused by the phytopathogenic fungus Verticillium dahliae Kleb.It has distributed worldwide,causing serious yield losses and fiber quality reduction in cotton production.The pathogen has developed different mechanisms like the production of cell wall degrading enzymes,activation of virulence genes and protein effectors to succeed in its in fection.Cott on plant has also evolved multiple mechanisms in response to the fungus infection,including a strong production of lignin and callose deposition to strengthen the cell wall,burst of reactive oxygen species,accumulation of defene hormones,expression of defense-related genes,and target-directed strategies like cross-kingdom RNAi for specific virulent gene silencing.This review summarizes the recent progress made over the past two decades in understanding the interactions between cotton plant and the pathogen Verticillium dahliae during the infection process.The review also discusses the achievements in the control practices of cotton verticillium wilt in recent years,including cultivation practices,biological control,and molecular breeding strategies.These studies reveal that effective management strategies are needed to control the disease,while cultural practices and biological control approaches show promising results in the future.Furthermore,the biological control approaches developed in recent years,including antagonistic fungi,endophytic bacteria,and host induced gene sile ncing strategies provide efficie nt choices for in teg rated disease management.
