Abstract
Interspecific F1 hybrid (2x) between V. radiata var. T44 and V. mungo var. T9 showed intermediate morphological characters of both the parents and low pollen fertility (4.4%). Inspite of profused flowering there was no pod formation. However, on the contrary, the amphiploid (4x) obtained with the colchicine treatment of the F1 hybrid seedling exhibited gigantism in most of the characters and restoration of pollen fertility (81.3%) and seed fertility. The amphiploid showed negative heterosis for various agronomic traits in CI and C2 generation. Tremendous increase in the number of pods/plant resulting in 52.02% heterosis in yield over its superior parent was observed in C3 genertion. While C4 generation of amphiploid besides higher yield was also better for its nutritional value.
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