Background:Cotton is a significant economic crop that plays an indispensable role in many domains.Gossypium hirsutum L.is the most important fiber crop worldwide and contributes to more than 95%of global cotto n produ...Background:Cotton is a significant economic crop that plays an indispensable role in many domains.Gossypium hirsutum L.is the most important fiber crop worldwide and contributes to more than 95%of global cotto n production.Identifying stable quantitative trait locus(QTLs)controlling fiber quality and yield related traits are necessary prerequisites for marker-assisted selection(MAS).Results:A genetic linkage map was constructed with 312 simple sequence repeat(SSR)loci and 35 linkage groups using JoinMap 4.0;the map spanned 1 929.9 cM,with an average interval between two markers of 6.19 cM,and covered approximately 43.37%of the cotton genome.A total of 74 QTLs controlling fiber quality and 41 QTLs controlling yield-related traits were identified in 4 segregating generations.These QTLs were distributed across 20 chromosomes and collectively explained 1.01%?27.80%of the observed phenotypic variations.In particular,35 stable QTLs could be identified in multiple generations,25 common QTLs were con sistent with those in previous studies,and 15 QTL clusters were found in 11 chromosome segments.Conclusion:These studies provide a theoretical basis for improving cotton yield and fiber quality for molecular marker-assisted selection.展开更多
立足于国产谷物测产系统的需求,开发谷物产量数据处理和产量分布图生成系统。确立了该系统主要功能和系统层次结构,选用了距离反比加权空间产量数据插值(Inverse Distance to Power)算法,采用值过滤和3σ法则滤除粗大产量数据,研究了等...立足于国产谷物测产系统的需求,开发谷物产量数据处理和产量分布图生成系统。确立了该系统主要功能和系统层次结构,选用了距离反比加权空间产量数据插值(Inverse Distance to Power)算法,采用值过滤和3σ法则滤除粗大产量数据,研究了等值线产量图生成方法,开发了具有空间数据插值、误差产量数据过滤、产量数据统计分布、原始产量点图、栅格图和等值线图的谷物产量图生成系统。展开更多
基金supported by the National Natural Science Foundation of China(31371668)the National Agricultural Science and Technology Innovation project for CAAS(CAAS-ASTIP-2016-ICR)
文摘Background:Cotton is a significant economic crop that plays an indispensable role in many domains.Gossypium hirsutum L.is the most important fiber crop worldwide and contributes to more than 95%of global cotto n production.Identifying stable quantitative trait locus(QTLs)controlling fiber quality and yield related traits are necessary prerequisites for marker-assisted selection(MAS).Results:A genetic linkage map was constructed with 312 simple sequence repeat(SSR)loci and 35 linkage groups using JoinMap 4.0;the map spanned 1 929.9 cM,with an average interval between two markers of 6.19 cM,and covered approximately 43.37%of the cotton genome.A total of 74 QTLs controlling fiber quality and 41 QTLs controlling yield-related traits were identified in 4 segregating generations.These QTLs were distributed across 20 chromosomes and collectively explained 1.01%?27.80%of the observed phenotypic variations.In particular,35 stable QTLs could be identified in multiple generations,25 common QTLs were con sistent with those in previous studies,and 15 QTL clusters were found in 11 chromosome segments.Conclusion:These studies provide a theoretical basis for improving cotton yield and fiber quality for molecular marker-assisted selection.
文摘立足于国产谷物测产系统的需求,开发谷物产量数据处理和产量分布图生成系统。确立了该系统主要功能和系统层次结构,选用了距离反比加权空间产量数据插值(Inverse Distance to Power)算法,采用值过滤和3σ法则滤除粗大产量数据,研究了等值线产量图生成方法,开发了具有空间数据插值、误差产量数据过滤、产量数据统计分布、原始产量点图、栅格图和等值线图的谷物产量图生成系统。
