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VOL. 8, ISSUE 2 (2026)
Deciphering of genetic variability, heritability and genetic advance for yield enhancement in groundnut (Arachis hypogaea L.)
Authors
Peddi Kyatheeswara Reddy, B Santhosh Kumar Naik, R Narasimhulu, K Viswanath, M Sudha Rani
Abstract
A study was conducted with 33 genotypes of groundnut which includes 29
advanced breeding lines and four checks to evaluate genetic variability,
heritability, and genetic advance for 15 yield and yield component traits.
Analysis of variance revealed significant differences among genotypes for all
traits, indicating substantial genetic variability. PCV, GCV, heritability
(broad-sense) and GAM revealed that, highest variability recorded for number of
secondary branches plant⁻¹, number of primary branches plant⁻¹, number of
matured pods plant⁻¹, kernel yield plant⁻¹(g), pod yield plant⁻¹ (g) and plant
height (cm) indicating a wide range of genetic variability and substantial
scope for effective selection to improve these traits. High heritability
coupled with high GAM (additive gene action) Observed for number of secondary
branches plant⁻¹, number of primary branches plant⁻¹, number of matured pods
plant⁻¹, kernel yield plant⁻¹, plant height(cm), pod yield plant⁻¹(g), dry
haulm yield plant⁻¹(g) and harvest index(%) the preponderance of additive gene
action implying that environmental influence is minimal, making these traits
amenable to improvement through simple selection. These traits were identified
as promising selection criteria for improving pod yield plant-1 and
kernel yield plant-1 in future groundnut breeding programs.
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Pages:367-371
How to cite this article:
Peddi Kyatheeswara Reddy, B Santhosh Kumar Naik, R Narasimhulu, K Viswanath, M Sudha Rani "Deciphering of genetic variability, heritability and genetic advance for yield enhancement in groundnut (<i>Arachis hypogaea</i> L.)". International Journal of Agriculture and Plant Science, Vol 8, Issue 2, 2026, Pages 367-371
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