global-journal-of-science-frontier-research-d-agriculture-veterinary Global Journal of Science Frontier Research - D: Agriculture & Veterinary 0975-5896 2249-4626 Global Journals Publishing Group Incorporated 78319 Gene Action and CombininAgricultural, Veterinary and Environmentalg Ability Analysis for Yield and Yield-Related Traits in Ridge Gourd [Luffa Acutangula (L.) Roxb.] NarasannavarAnand GastiV. Sridhar INDIA Department of Vegetable Science, College of Horticulture Bagalkot. 01 12 2014 14 47 21 26

Combining ability estimates for growth, earliness, yield and quality parameters were studied following Line × Tester approach in ridge gourd. Fifty-one cross combinations were evaluated for 15 traits. The variance due to SCA was higher than the GCA for all the characters, indicating the importance of non-additive gene action. Comprehensive assessment of parents by considering gca effects of 15 characters studied has resulted into identification of lines, viz., KRG-2, KRG-3, KRG-4, KRG-11, KRG-16 and tester ASM as good combiners and PN as average combiners over all characters. Maximum and positively significant sca effects was observed in the cross KRG-9 x ASJ (0.24) followed by KRG-10 x PN (0.22), KRG-6 x ASM (0.16), KRG-5 x ASM (0.15) and KRG-3 x ASJ (0.14) for fruit yield per vine as well as fruit yield per plot and hectare. KRG-9 × ASJ showed significant sca effects for earliness characters like days to first female flower appearance (-6.19), node to first female flower appearance (- 5.31) and days to first harvest (-8.61).

 combining ability luffa acutangula ridge gourd ridge gourd. Full Text

Combining ability estimates for growth, earliness, yield and quality parameters were studied following Line × Tester approach in ridge gourd. Fifty-one cross combinations were evaluated for 15 traits. The variance due to SCA was higher than the GCA for all the characters, indicating the importance of non-additive gene action. Comprehensive assessment of parents by considering gca effects of 15 characters studied has resulted into identification of lines, viz., KRG-2, KRG-3, KRG-4, KRG-11, KRG-16 and tester ASM as good combiners and PN as average combiners over all characters. Maximum and positively significant sca effects was observed in the cross KRG-9 x ASJ (0.24) followed by KRG-10 x PN (0.22), KRG-6 x ASM (0.16), KRG-5 x ASM (0.15) and KRG-3 x ASJ (0.14) for fruit yield per vine as well as fruit yield per plot and hectare. KRG-9 × ASJ showed significant sca effects for earliness characters like days to first female flower appearance (-6.19), node to first female flower appearance (- 5.31) and days to first harvest (-8.61).