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Vol. 11, Issue 2 (2022)

Studies on genetic variability for yield and yield contributing traits in aromatic rice (Oryza sativa L.)

Author(s):
Chavan BR, Dr. Dalvi VV, Dr. Kunkerkar RL, Dr. Mane AV and Dr. Gokhale NB
Abstract:
Fifteen genotypes of rice were evaluated in a field study to assess the magnitude of genetic variability, heritability and genetic advance for yield and yield contributing traits. The analysis of variance revealed that there were significant differences among the entries for all the traits studied. A wide range of variation was recorded for days to 50% flowering, plant height (cm), number of tillers per plant, length of panicle (cm), total number of grains per panicle, number of filled spikelets per panicle, number of unfilled spikelets per panicle, spikelet fertility (%), test weight (g), grain yield per plant (g), straw yield per plant (g), harvest index (%), amylose content (%), kernel length (mm), kernel breadth (mm), L/B ratio (mm), kernel elongation (mm).
The phenotypic coefficient of variation was greater than genotypic coefficient of variation for all the characters studied which shows the influence of the environmental effect on the characters. High values for genotypic and phenotypic coefficient recorded for number of tillers per plant, total number of grains per panicle, number of filled spikelets per panicle, number of unfilled spikelets per panicle, straw yield per plant (g), kernel length (mm) and L/B ratio (mm). High heritability along with high genetic advance as percent of mean were observed for plant height (cm), number of tillers per plant, total number of grains per panicle, number of filled spikelets per panicle, number of unfilled spikelets per panicle, test weight (g), grain yield per plant (g), straw yield per plant and kernel length (mm) indicating that the characters were controlled by additive gene action. Therefore, the overall result indicates the presence of enough variability for development of improved rice varieties and the studied traits can be used for selection.
Pages: 1732-1735  |  454 Views  262 Downloads


The Pharma Innovation Journal
How to cite this article:
Chavan BR, Dr. Dalvi VV, Dr. Kunkerkar RL, Dr. Mane AV, Dr. Gokhale NB. Studies on genetic variability for yield and yield contributing traits in aromatic rice (Oryza sativa L.). Pharma Innovation 2022;11(2):1732-1735.

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