Evaluation of some genetic variability associated traits of 32 rice (Oryza sativa L.) genotypes in three different planting spacing by path coefficient analysis

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Published Jan 15, 2023
Deepak Katkani
Shiv Kumar Payasi Aidin Hamidi Yogendra Singh Rahul Patidar

Abstract

The study was taken up to estimate 32 advance breeding lines of rice for grain yield and the related traits in three different planting techniques, viz. direct seeded condition (E-I), transplanting with spacing of 15 x 15 cm (E-II) and 25 x 15 cm (E-III). The experimentation was carried out to explore the parameters of hereditary & variability for yield along-with yield components, to study the extent of association and direct and indirect special effects of different yield components on grain yield in rice. The analysis of variance from the experimental results documented significant changes amongst various genotypes for all studied traits with respect to the three planting spacing. High GCV, high magnitude of broad sense heritability coupled with genetic advance as percentage of mean was detected for grain yield/plant and harvest index. These above-mentioned traits displayed considerable contribution of different additive gene action for their phenotypic appearance. The characters harvest index (%), biological yield/plant, flag leaf angle and no. of productive tillers/plant showed positive correlation & direct effect on grain yield per plant on pooled analysis. It indicated that these traits might be included in formulating criteria of selection for enhancement of the grain yield per plant in rice.

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Katkani, D., Payasi, S. K., Hamidi, A., Singh, Y., & Patidar, R. (2023). Evaluation of some genetic variability associated traits of 32 rice (Oryza sativa L.) genotypes in three different planting spacing by path coefficient analysis . Environment Conservation Journal. https://doi.org/10.36953/ECJ.12622352

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Keywords

Correlation, Genetic variability, Path analysis, Rice, spacing

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