Heritabilities in some rice crosses [India]
1985
Ghosh, A. | Bhaumik, P.K. (Rice Research Station, P.O. Chinsurah, Hooghly, W. Bengal, Pin-712 102 (India))
The lowest estimated heritability was for grain length (25.54%) in Kanchi/Jayanti. Heritability exceeded 50% for days-to-heading, effective tillers/plant, number of filled grains/panicle, straw weight 100-grain weight, and yield/plant in all crosses. Ratna/Jayanti had more than 50% heritability for 100-grain weight and Kanchi/Jayanti had the same percentage for plant height. Estimates of genetic gain showed selection could double straw weight in Ratna/Jayanti. Genetic gain was minimum for panicle length (3.6% to 6.0%) in all F2 populations. Moderately high genetic gains were found for effective tillers per plant straw weight, and yield/plant. Genetic gains were moderate for number of filled grains/panicle. In all F2 populations, days-to-heading and 100-grain weight showed low genetic gains and high heritability, indicating non-additive gene action. Similar gene action was observed in plant height of Kanchi/Jayanti and grain length of Ratna/Jayanti
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