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VOL. 10, ISSUE 1 (2025)
Variability studies on yield and yield-related traits in rice (Oryza sativa (L.) genotypes under nitrogen-starved condition
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 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 plant
height, tillers per plant, productive tillers per plant, grains per panicle,
dry matter production, grain yield per plant, grain nitrogen uptake, straw
nitrogen uptake, and total nitrogen uptake, indicating the presence of high
variability among recombinant inbred lines under nitrogen- starved condition.
High heritability coupled with genetic advance as per cent of mean was observed
for all the characters except grain nitrogen content. Therefore, genetic
improvement through direct selection for these traits could be helpful for
developing nitrogen use efficient lines.
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Pages:36-38
How to cite this article:
S Chitra, CR Anandakumar "Variability studies on yield and yield-related traits in rice (<i>Oryza sativa</i> (L.) genotypes under nitrogen-starved condition". International Journal of Food Science and Nutrition, Vol 10, Issue 1, 2025, Pages 36-38
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