本研究根据公开发表的烟草K326基因组和烟草430K SNP固相芯片检测数据,以7份种质两两组合之间每条染色体上20个多态标记为目标,基于多重PCR扩增的精准定位测序分型技术(mGPS,Genotyping by Pinpoint Sequencing of multiplex PCR produc...本研究根据公开发表的烟草K326基因组和烟草430K SNP固相芯片检测数据,以7份种质两两组合之间每条染色体上20个多态标记为目标,基于多重PCR扩增的精准定位测序分型技术(mGPS,Genotyping by Pinpoint Sequencing of multiplex PCR products)开发出烟草1.8K育种液相芯片(YT1.8K.1)。利用该芯片对上述7份种质两两之间杂交的21个杂交组合进行基因分型检测,每个杂交组合之间的平均差异位点数为650个,能同时满足每个组合定向改良筛选高遗传背景回复率单株的需要。利用该芯片对23个烟草品种进行基因型分型检测和聚类分析,聚类分类结果与品种系谱基本吻合;利用该芯片从367个BC2F1群体中筛选出5个背景回复率高于94.96%的单株,高于理论均值87.5%,表明该育种芯片可应用于烟草种质资源聚类分析、定向改良育种的遗传背景筛选。展开更多
[Objective] This study aimed to conduct genetic analysis on agronomic traits of doubled haploid population in tobacco. [Method] Main agronomic traits of DH population in tobacco were investigated, including plant heig...[Objective] This study aimed to conduct genetic analysis on agronomic traits of doubled haploid population in tobacco. [Method] Main agronomic traits of DH population in tobacco were investigated, including plant height, effective number of leaves, lumbar leaf length, lumbar leaf width, intermodal distance and pericaulome length. Based on the estimation of skewness coefficient and kurtosis coefficient of Hongda x Hicks Broad Leaf populations, the number of gene pairs was calculated. [Result] The number of gene pairs controlling plant height (topping plant height and natural plant height) is 10.20 and 10.80, respectively; the number of gene pairs con- trolling leaf number (effective number of leaves and natural number of leaves) is 6.21 and 6.25, respectively; the number of gene pairs controlling pericaulome length, intermodal distance, lumbar leaf length and lumbar leaf width is 8.51, 15.30, 20.36 and 17.45, respectively. [Conclusion] This study revealed the characteristics of genetic variation of tobacco traits, which provided theoretical basis for the breeding of new varieties.展开更多
文摘本研究根据公开发表的烟草K326基因组和烟草430K SNP固相芯片检测数据,以7份种质两两组合之间每条染色体上20个多态标记为目标,基于多重PCR扩增的精准定位测序分型技术(mGPS,Genotyping by Pinpoint Sequencing of multiplex PCR products)开发出烟草1.8K育种液相芯片(YT1.8K.1)。利用该芯片对上述7份种质两两之间杂交的21个杂交组合进行基因分型检测,每个杂交组合之间的平均差异位点数为650个,能同时满足每个组合定向改良筛选高遗传背景回复率单株的需要。利用该芯片对23个烟草品种进行基因型分型检测和聚类分析,聚类分类结果与品种系谱基本吻合;利用该芯片从367个BC2F1群体中筛选出5个背景回复率高于94.96%的单株,高于理论均值87.5%,表明该育种芯片可应用于烟草种质资源聚类分析、定向改良育种的遗传背景筛选。
基金Supported by Project of Yunnan Tobacco Company(2010YN02,2011YN04)~~
文摘[Objective] This study aimed to conduct genetic analysis on agronomic traits of doubled haploid population in tobacco. [Method] Main agronomic traits of DH population in tobacco were investigated, including plant height, effective number of leaves, lumbar leaf length, lumbar leaf width, intermodal distance and pericaulome length. Based on the estimation of skewness coefficient and kurtosis coefficient of Hongda x Hicks Broad Leaf populations, the number of gene pairs was calculated. [Result] The number of gene pairs controlling plant height (topping plant height and natural plant height) is 10.20 and 10.80, respectively; the number of gene pairs con- trolling leaf number (effective number of leaves and natural number of leaves) is 6.21 and 6.25, respectively; the number of gene pairs controlling pericaulome length, intermodal distance, lumbar leaf length and lumbar leaf width is 8.51, 15.30, 20.36 and 17.45, respectively. [Conclusion] This study revealed the characteristics of genetic variation of tobacco traits, which provided theoretical basis for the breeding of new varieties.