In a 7 x 7 diallel cross in groengram, the combining ability studies revealed that both the additive and non-additive gene action were important for plant height, clusters per plant, pods per plant, seeds per pod and seed yield and the additive gene action was predominent for plant height and seed yield. For pod. length, only additive gene action was important. The parent PIMS 1 was good general combiner for seed yield, pod length and seeds per pod; the parent ML 65 was good combiner for seed yield and clusters per plant and KM 1 for plant height and pod length. The crosses KM 1 x PIMS 1, KM 1 x ML 65 and PIMS 1 x S 8 were found to be best combinations for most of the yield components. Biparental mating system was suggested for the improvement of greengram.
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