The sunflower, Helianthus annuus L comprises an important member of family Asteraceae. The mutagenic effects of gamma rays (5, 10 and 15kR) and sodium azide (0.01,0.03 and0.05%) on the frequency and spectrum of chlorophyll mutations in two varieties of sunflower, namely, Solapur sunflower (SS-56) and Latur sunflower (LS-11) have been studied. Both the varieties of sunflower differed marginally in their response towards different mutagens with respect to the parameters of viable mutants.
Helianthus annuus, gamma rays, sodium azide, mutation frequency, chlorophyll mutation
