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首页> 外文期刊>Genetic Resources and Crop Evolution >Morpho-agronomic and simple sequence repeat-based diversity in colored rice (Oryza sativa L.) germplasm from peninsular India
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Morpho-agronomic and simple sequence repeat-based diversity in colored rice (Oryza sativa L.) germplasm from peninsular India

机译：印度半岛有色水稻（Oryza sativa L.）种质的形态农艺和基于简单序列重复的多样性

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摘要

Knowledge of the genetic diversity in the germplasm accessions is important for the efficient germplasm management. We studied 45 colored rice accessions, which had been earlier collected from peninsular India. The accessions were evaluated at two diverse locations for 12 morpho-agronomic traits and genotyped using 50 simple sequence repeat (SSR) markers. Significant genotypic variability was observed for all morpho-agronomic traits studied. Dendrogram and principal component analysis based on morpho-agronomic traits separated the accessions into three clusters. The first two principal components accounted for 82% of the total variation. The most discriminatory traits were number of grains per panicle, biomass yield, and days to flowering and maturity. The SSR analysis revealed high polymorphic information content value of 0.84. Though, Mantel test did not show a significant correlation, yet the classification based on phenotyping and genotyping data showed good agreement for the expression of morpho-agronomic traits in the formation of clusters. Five accessions had high concentration (> 100 mu g/g) of Fe and one of Zn. Our study revealed the presence of large genetic variation among the colored rice accessions evaluated and moderate agreement between morpho-agronomic and SSR-based classifications and of these with geographic diversity.
机译：种质种质遗传多样性的知识对于有效的种质管理很重要。我们研究了45种有色水稻品种，这些品种早些时候是从印度半岛收集的。在两个不同位置评估了这些种质的12个形态农艺性状，并使用50个简单序列重复（SSR）标记进行了基因分型。观察到的所有形态农艺性状的显着基因型变异。根据形态农艺性状的树状图和主成分分析将种质分成三个簇。前两个主要成分占总变化的82％。最有区别的性状是每穗粒数，生物量产量以及开花和成熟的天数。 SSR分析显示高多态信息含量值为0.84。虽然，Mantel试验没有显示出显着的相关性，但是基于表型和基因型数据的分类显示出在集群形成中形态-农艺性状的表达良好的一致性。五个种质具有高浓度（> 100μg / g）的铁和一种锌。我们的研究表明，评估的有色水稻种质之间存在较大的遗传变异，形态农艺学分类和基于SSR的分类之间以及这些具有地理多样性的分类之间存在适度的一致性。

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