Relationship between Yield and Yield Contributing Traits in Sorghum [Sorghum bicolor (L) Moench]

Perumal Vinoth, B. Selvi, N. Senthil, K. Iyanar, S. Jeyarani, V. Santhiya
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Abstract

Knowledge about the association between grain yield and yield contributing traits is important for sorghum development programs. Thus, the aim of this study was to determine correlations and path-coefficients between grain yield per plant and yield contributing traits. The experiment was conducted during Kharif 2019 in the Department of millets, TNAU, Coimbatore, India by using nine parents and twenty hybrids to study the genotypic correlations on the basis of seventeen traits.  Analysis of variance evinced significant variation for all the traits under study. In correlation studies, the grain yield was positively associated with plant height (0.603), leaf length (0.613), leaf area index (0.501), flag leaf length (0.529), panicle length (0.608), panicle weight (0.930) and hundred seed weight (0.643). In path analysis, the traits leaf length, flag leaf length, panicle length, panicle weight and hundred seed weight exposed highly direct and indirect effects. Selection for a trait is effective when both the correlation and direct effect are higher and positive as this indicates its true association. Hence this investigation revealed flag leaf length, panicle length, panicle weight and hundred seed weight exhibited positive association and direct effect on grain yield, which indicates that the selection towards these characters will improve the yield.
高粱产量与产量贡献性状的关系[高粱双色]
了解籽粒产量和影响产量的性状之间的关系对高粱的开发计划是重要的。因此,本研究的目的是确定单株产量与产量贡献性状之间的相关关系和通径系数。本试验于2019年秋季在印度哥印拜陀TNAU小米部进行,利用9个亲本和20个杂交种,在17个性状的基础上研究了基因型相关性。方差分析表明,各性状均存在显著差异。在相关研究中,籽粒产量与株高(0.603)、叶长(0.613)、叶面积指数(0.501)、旗叶长(0.529)、穗长(0.608)、穗重(0.930)、百粒重(0.643)呈正相关。通径分析中,叶长、旗叶长、穗长、穗重、百粒重等性状的直接和间接影响较大。当相关性和直接效应都较高且为正时,选择是有效的,因为这表明其真正的相关性。结果表明,旗叶长、穗长、穗重和百粒重对籽粒产量具有正相关和直接影响,表明对这些性状的选择将提高产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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