摘要
以133个茎瘤芥种质为材料,通过田间试验,基于表型性状分析茎瘤芥种质的遗传多样性。结果表明,除裂叶对数、沟间深度、茎叶比、侧瘤宽度、瘤茎鲜质量性状外,其余16个经济性状在茎瘤芥材料间的变异系数变幅较小;茎瘤芥材料间的遗传距离变幅为0.01～7.77,平均为2.50,有88.93%的遗传距离小于4.00。表明参试材料间表型相似程度较高,遗传差异较小,遗传基础相对狭窄。表型聚类分析结果表明,当遗传距离为0.21时,可将供试材料分成8类,且每个类群都有各自的性状特点,说明利用表型性状可以将茎瘤芥种质进行分类和鉴定。
Using a field experiment and 133 tuber mustard germplasms as materials,the genetic di- versity on the basis of their phenotypes was investigated. The results showed that the variation coefficients of the sixteen phenotypic characters changed in a small range excluding the number of bilobed leaf,depth of inter-nodule,and stem weight per plant. The genetic distances among the 133 tuber mustard germplasms ranged from 0. 01 to 7.77, with an average of 2.50, of which 88.93 % were less than 4.00. The results indicated that the similarity level was high and the ge- netic diversity was absent among the 133 tuber mustard germplasms. The cluster analysis indica- ted that the materials studied could be separated into 8 groups,showing that tuber mustard germ- plasms could be classified and identified based on phenotypes.
出处
《河南农业科学》
CSCD
北大核心
2012年第9期114-119,共6页
Journal of Henan Agricultural Sciences
基金
国家"863"计划项目(2009AA10AA030)
教育部科学技术重点项目(KJ091316)
重庆市科委攻关项目(CSTC2011AB1022)
重庆市教委科研项目(KJ091308)
关键词
茎瘤芥
表型
遗传多样性
tuber mustard
phenotype
genetic diversity
