Genetic variability of different plant and yield characters in rice
2002
Tahir, M. | Wadan, D. | Zada, A. (Agricultural Research Station, Mingora (Pakistan))
Knowledge of genetic variability and other relevant parameters for different characters is very useful in crop improvement programs. An experiment comprising tent rice varieties/lines was conducted in RCB design with 3 replications at Agricultural Research Station (N), Mingora, Swat, during 1992. The data revealed highly significant mean squares for all the characters suggesting the presence of genetic difference present among the rice genotypes. Significant genetic variances confirmed that these characters were under genetic control, Phenotypic and genotypic coefficients of variation (PCV and GCV) were of comparable magnitudes except grain yield/plant and grains per panicle where the environmental coefficient of variation (ECV) contributed more to the PCV than GCV. High heritabilities along with high relative expected genetic advance (REGA) for grain L:W ratio, grain width, 1000 grain weight, primary branches per panicle, and productive tillers indicating that these characters may be considered in any selection scheme.
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