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VOL. 7, ISSUE 1 (2025)
Genetic variability in recombinant inbred population for yield-related traits in rice (Oryza sativa (L.)
Authors
S Chitra, CR Anandakumar
Abstract
The present study was carried out at
Agricultural College and Research Institute, Madurai, under nitrogen-starved
conditions. The experimental material comprised 245 recombinant inbred
populations (RILs) of ASD 16 X Basmati 370 cross, which were laid out in
randomized complete block design with two replications. Observations were
recorded for eighteen quantitative characters, and the data were analyzed for
biometric characters viz., phenotypic coefficient of variation (PCV),
genotypic co-efficient of variation (GCV), heritability (h2), and
genetic advance as percent of the mean (GAM). High GCV and PCV were observed for
straw nitrogen uptake, total nitrogen uptake, grain nitrogen uptake, grain
yield per plant, dry matter production, and grains per panicle, indicating the
presence of high genetic variability among the rice genotypes of the RIL
population. High heritability coupled with genetic advance as a percent of mean
was observed for all the characters except nitrogen translocation efficiency,
straw nitrogen content, 100-grain weight, and grain nitrogen content; it could
be due to the presence of additive gene action and the selection for these
traits effective. Hence the present study concluded that there was adequate
genetic diversity present in the RIL population for most of the characters.
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Pages:69-71
How to cite this article:
S Chitra, CR Anandakumar "Genetic variability in recombinant inbred population for yield-related traits in rice (<i>Oryza sativa</i> (L.)". International Journal of Agriculture and Plant Science, Vol 7, Issue 1, 2025, Pages 69-71
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