Mutagenic effect of gamma rays ( gamma -ray) on growth yield and composition of oil in patchouli (Pogostemon patchouli Pellet.).

摘要

Mutagenic effect of different doses of gamma rays was investigated to develop a high yielding mutant in patchouli. The in vitro, grown plantlets were exposed with 3, 5, 6, 8, 9 and 10 kR dose of gamma rays. The plants raised from these treatments were screened in field for their quantitative and qualitative traits. The study resulted in isolation of several economically useful mutant showing variation in agronomic and essential oil characteristic. Herb yield shows inverse relationship with dose rate; as dose rate increases, herb yield get decreases. However, high frequency of alternation in oil content and oil yield was noticed in several treatments, especially in plant exposed with 8 kR, which exhibited pronounced effect in enhancing oil content (2.4 to 3.45%) and oil yield (68.34 to 84.06 l/ha per year).