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ORYZA- An International Journal on Rice
Year : 2008, Volume : 45, Issue : 2
First page : ( 94) Last page : ( 97)
Print ISSN : 0474-7615.

Analysis of gene action and combining ability for yield and its component characters in rice

Sharma R.K*, Mani S.C

Department of Genetics& Plant Breeding, Govind Ballabh University of Agriculture & Technology, Pantnagar, 263 145, Uttarkhand, India

*Present address: Principal Scientist, Division of Genetics, IARI, Pusa, New Delhi-110012

Abstract

Eighteen hybrids generated from crossing six basmati lines with three tester parents were studied for combining ability for grain yield and its component characters. Additive gene action was predominant for flag leaf area, panicle length, grain weight panicle-1 and grain yield plant-1while days to flowering, PBT plant-1, grains panicle-1 exhibited preponderance of non-additive gene action. Kasturi, Basmati 5853 and Haryana Basmati 1 among the lines and Pant Dhan 11 among the testers emerged as good general combiner for various traits. Basmati C 622 x TN 1, Basmati. 5853 x Pant Dhan 11and Pusa Basmati 1 x T N 1 crosses were emerged as most promising.

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Keywords

Rice, combining ability, gene action, grain yield and yield component.

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