您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Genetic diversity of 324 cultivated tomato germplasm resources using agronomic traits and InDel markers

文献类型： 外文期刊

作者： Jin, Lan 2 ; Zhao, Liping 1 ; Wang, Yinlei 1 ; Zhou, Rong 4 ; Song, Liuxia 1 ; Xu, Liping 5 ; Cui, Xia 6 ; Li, Ren 6 ; Yu, W 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Vegetable Res Inst, Nanjing, Jiangsu, Peoples R China

2.Lab Genet Improvement High Efficiency Hort Crops, Nanjing, Jiangsu, Peoples R China

3.Nanjing Agr Univ, Coll Hort, Nanjing, Jiangsu, Peoples R China

4.Aarhus Univ, Dept Food Sci, Arslev, Denmark

5.Xining Vegetable Res Inst Qinghai Prov, Xining, Qinghai, Peoples R China

6.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing, Peoples R China

关键词： Genetic variation; Heterotic groups; Agronomic traits; InDel marker; Multivariate methods

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

ISSN： 0014-2336

年卷期： 2019 年 215 卷 4 期

页码：

收录情况： SCI

摘要： The study of morphological and molecular diversity and grouping analysis for cultivated inbred tomato lines is very important to help breeders in selecting parental lines for hybrid breeding and developing heterotic groups. In this study, a total of 324 cultivated inbred tomato lines collected from various sources were investigated for the presence of 17 agronomic traits and subsequently genotyped with a 56- (insertion-deletion) InDel assay. The phenotypic coefficient of variation ranged from 5 to 108% with an average of 36%, and the range of phenotypic diversity index was 0.41- 2.06, with an average of 1.59. The outstanding traits in terms of causing phenotypic diversity of the inbred tomato lines are resistance to gray leaf spot, hypocotyl colour, growth habit, fruit shape, plant height, days to 30% first flower, weight per fruit, hardness, brix, acid, number of locules and transverse diameter of fruit by principal component analyses (PCA). The values of Shannon's information index, polymorphic information content and heterozygosity are 0.61, 0.33 and 0.06 respectively. The PCA and Ward's method for cluster multivariate analysis based on 17 agronomic traits revealed that there are four major groups with rich genetic diversity within groups. Model-based population structure analysis indicated that the 324 cultivated inbred tomato lines were separated into two main groups that were different from the results of the three main groups and five subgroups by Nei's (Am Nat 106:283-292, 1973) cluster analysis based on InDel markers. The Mantel test correlation coefficient of the matrices of morphological and InDel distances was 0.229. Overall, this study reveals that 324 cultivated inbred tomato lines are diverse with high homozygosity and a rich genetic background. Nei's (1973) cluster analysis can serve as an effective approach for assigning germplasm into groups and for providing guidelines for parental selection in hybrid tomato breeding.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台