Frequency and spectrum of induced mutations following hybridization in Indian mustard

Frequency and spectrum of γ-ray induced chlorophyll and morphological mutations were studied in F₂M₂ generation of six Indian mustard hybrids. Chlorophyll mutation viridis was most frequent whereas albina was rare. The morphological mutation with fasciated leaves occurred frequently. Maximum mutational events were induced with 100 kR γ-ray treatment in various hybrids. Differences were recorded in the frequency of certain chlorophyll and morphological mutations in the hybrids when compared within their reciprocal cross combinations.