A spontaneous dwarf mutant of groundnut variety, Kopergaon-3, showed differential expression for plant height and secondary branching characters in the reciprocal F1 populations. These differences were assumed to be due to the interaction of nuclear and cytoplasmic factors which mutated with dwarfness.Segregation for dwarfness in the F2 and F3 generations confirmed the monogenic inheritance. The mutant expression was, therefore, controlled by a pair of recessive factors designated d(v)d(v), indicating dwarfism in the Valencia group.
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