水稻恢复系产量和品质相关属性的主成分分析及遗传差异研究

IF 1 4区 生物学 Q3 PLANT SCIENCES
S. Tiwari, Y. Singh, P. K. Upadhyay, G. K. Koutu
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引用次数: 3

摘要

对90个水稻育性恢复系的遗传多样性和主成分分析进行了研究,以确定高产杂交种的潜在亲本。D2统计揭示了不同基因型的聚类之间的最大簇间距离。属于这些多样化基因库的基因型PS 2、PRR 828、JR-4322-2和JR-4322-2可能产生涉及上述最合适亲本的杂种组合。PCA将维数复杂度分解为9个主要轴,其中PC1占最大变量基因型,即JR-1009、ANP-553、JR-1062-1、JR-1103-1、JR-1023-1、JR-1054-4、IR09N 261、JR-1008、NPT-3806和JR-81。从遗传距离的大小来看,各性状对分化的贡献率(可育小穗/株和总小穗/株)以及这些性状的最高聚类均值均反映在属于聚类、IX和x的基因型中。含有NPT 10、R710和JR1301基因型的PC4和PC5包含的品质属性最多。为品种发育而设计的多样化基因库和精确化选择,以及随后的分子鉴定,为今后对现有遗传多样性的利用提供了精确的思路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Principal component analysis and genetic divergence studies for yield and quality-related attributes of rice restorer lines
A study on genetic diversity and principal component analysis (PCA) in a set of 90 fertility restorer lines of rice was conducted to identify potential parents for producing high-yielding hybrids. The D2 statistics uncovered the maximum inter-cluster distance between the clusters having different genotypes. The genotypes PS 2, PRR 828, JR-4322-2, and JR-4322-2 belonging to these diversified gene pools may produce heterotic hybrid combinations involving the most suitable parents mentioned above. The PCA reduces dimensional complexity into nine principle axes with PC1 account maximum variable genotypes, namely, JR-1009, ANP-553, JR-1062-1, JR-1103-1, JR-1023-1, JR-1054-4, IR09N 261, JR-1008, NPT-3806, and JR-81. Considering the magnitude of genetic distance, the per cent contribution of traits towards divergence (fertile spikelet/plant and total spikelet/plant) along with the highest cluster means of these traits reflected by the genotypes belonging to clusters, IX and X. The most quality attributes were included in PC4 and PC5 containing genotypes NPT 10, R710, and JR1301. The diversified gene pool and intensive selection designed for varietal development followed by molecular characterization give a precise idea about the upcoming utilization of existing genetic diversity.
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来源期刊
CiteScore
1.80
自引率
10.00%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Advance the cause of genetics and plant breeding and to encourage and promote study and research in these disciplines in the service of agriculture; to disseminate the knowledge of genetics and plant breeding; provide facilities for association and conference among students of genetics and plant breeding and for encouragement of close relationship between them and those in the related sciences; advocate policies in the interest of the nation in the field of genetics and plant breeding, and facilitate international cooperation in the field of genetics and plant breeding.
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