AN ASSESSMENT OF THE GENETIC DIVERSITY IN SELECTED WHEAT LINES USING MOLECULAR MARKERS AND PCA-BASED CLUSTER ANALYSIS

被引:4
作者
Ali, Y. [1 ]
Khan, M. A. [1 ]
Hussain, M. [2 ]
Atiq, M. [1 ]
Ahmad, J. N. [3 ]
机构
[1] Univ Agr Faisalabad, Dept Plant Pathol, Faisalabad, Pakistan
[2] Ayub Agr Res Inst, Plant Pathol Res Inst, Faisalabad, Pakistan
[3] Univ Agr Faisalabad, Dept Entomol, Faisalabad, Pakistan
来源
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH | 2019年 / 17卷 / 01期
关键词
breeding; grain yield; rust resistance; SSR markers; Triticum aestivum; STRIPE RUST RESISTANCE; TRITICUM-AESTIVUM L; LEAF RUST; MICROSATELLITE MARKERS; DURABLE RESISTANCE; DNA MARKERS; YIELD; DIVERGENCE; POLYMORPHISM; ASSOCIATION;
D O I
10.15666/aeer/1701_931950
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
A comprehensive germplasm evaluation study of wheat elite lines was conducted at Wheat Research Institute Faisalabad-Pakistan to identify new sources of leaf, stripe and stem rust resistance and high yield potential during crop seasons 2015-2017. The parent lines were selected on the basis of phenotypic characteristics and slow rusting history for race non-specific resistance genes by the selection of desirable parents used in filial generation (F1-F5). In primary evaluation, 112 lines were selected on the basis of rust reaction and high phenotypic uniformity for further testing against rust resistance and high yield potential. Among these, 32 lines exhibited Lr34/Yr18, 22 lines showed Lr46/Yr29, and 30 lines indicated the combination of Sr2/Yr30. Principal component analysis (PCA) based cluster analysis exhibited that, cluster I and III had clear separation compared to cluster II, IV and V. It was concluded that seven elite lines i.e. V-70003, V-70034, V-70054, V-70070, V-70085, V-70103 and V-70104 exhibited both the linkages of three slow rusting genes (Lr34/Yr18, Lr46/Yr29 and Sr2/Yr30) and high yield characteristics and are expected to contribute toward food security at national and global levels.
引用
收藏
页码:931 / 950
页数:20
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