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Asian Journal of Plant Sciences
Year: 2002  |  Volume: 1  |  Issue: 2  |  Page No.: 88 - 90

Combining Ability Studies in Rice (Oryza sativa L.) Under Salinized Soil Conditions

T. Mahmood, G. Shabbir, M. Sarfraz, M. Sadiq, M. K. Bhatti, S. M. Mehdi, M. Jamil and G. Hassan    

Abstract: An experiment involving 8 x 8 diallel crossing was conducted with rice to investigate the nature of gene action in governing the various traits studied and to explore the combining ability behavior of various genotypes used in the studies. Twelve agro-physiological characters were included in the study in F1 generation. High additive effects were recorded for plant height, panicle length, productive tillers/plant and primary branches/panicle. The non-additive effects were more pronounced for panicle fertility, days to maturity, shoot dry weight, paddy yield; Na, Ca and K contents of the shoot and K/Na ratio of the shoot. Out of the height parental lines/varieties studied Jhona-349 and Bas-385, respectively, proved to be the best general and specific combiners in the experiment under salinized soil conditions.

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