Journal of FARM SCIENCES, Vol 29, No 1 (2016)

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Combining ability studies for various horticultural traits in okra [Abelmoschus esculentus (L.) Moench] under South-Gujarat conditions

J.N. Tiwari, Sanjeev Kumar, T.R. Ahlawat

Abstract


The present investigation involved five parents and 20 F1s including reciprocals and standard check and evaluated in summer 2014 at Regional Horticultural Research Station, Navsari Agricultural University, Navsari under South-Gujarat conditions using a randomized complete block design with three replications. The combining ability analysis revealed significant differences for gca, sca and reciprocal variances thereby showing the importance of maternal effects. The estimate of combining ability effects suggested VRO-6 as good general combiner for yield per plant along with other traits like first flowering node, days to first flowering, days to 50% flowering, days to first picking, internodal length, days to last picking, number of fruits per plant and number of branches per plant. The presence of less number of good general combiners primarily for yield and its contributing traits laid greater emphasis on identification of desirable segregants in further generation. GJO-3 x AA, AOL-12-52 x AA and GJO-3 x VRO-6 were the most promising specific combiners exclusively for yield per plant along with days to last picking, number of fruit per plant, ascorbic acid; average fruit weight and days to first flowering, fruit diameter, respectively. Although, these crosses involved poor x poor, poor x poor and poor x good general combiners, but significant enhance in yield of such crosses could be attributed to complementation of favourable genes.

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