000			01776nam a2200181Ia 4500
999			_c25828 _d25828
003			OSt
005			20220822144732.0
008			151215b xxu||||| |||| 00| 0 eng d
082			_a630.28 _bSMI/GE
100			_aSmitha S
245			_aGene Action and Combining Ability in Grain Cowpea (Vigna unguiculata (L.) Walp) in Relation to Aphid Borne Mosaic Virus resistance
260			_a Vellayani _bDepartment of Plant Breeding and Genetics, College of Agriculture _c1995
502			_bMSc
520	3		_aTwo lines, five testers and ten hybrids of cowpea were evaluated in the Department of Plant Breeding and Genetics, College of Agriculture, Vellayani during 94-95, with the objective of estimating the combining ability of parents and gene action involved in the inheritance of different yield attributes and CAMV resistance. The lines and testers were selected based on their previous performances and crossed in line x tester manner to get ten hybrids. Observations were made on ten characters, of which nine characters showed significant difference among the 17 treatments. It was seen that nonadditive gene action was predominated for the inheritance of number of pods/plant, number of seeds/pod, 100 - seed weight and seed yield/plant and aphid borne mosaic resistance and additive gene action for days to flowering, days to maturity and number of branches/plant. The varieties Pournami, V - 317, V - 276 and Charodi were the best general combiners and the cross combinations V - 317 x CO4 and V-276 x Pournami were the best specific combinations for yield and CAMV resistance. Hence they can be utilized for further crop improvement programme.
700			_aKamalam N (Guide)
856			_uhttp://krishikosh.egranth.ac.in/handle/1/5810098476
942			_2ddc _cTH