Effect of doses of gamma rays and ethyl methanesulfonate on the germination and survival of induced mutations in pigeon pea cajanus cajan
Premsekar, S.; Appadurai, R.
Indian Journal of Agricultural Sciences 51(6): 381-386
ISSN/ISBN: 0019-5022 Accession: 005234912
The LD50 values for germination and survival of the induced mutants (M1) of pigeon pea [C. cajan (Linn.) Millsp.] were attained with 20 and 15 krad .gamma.-rays and 30 and 40 mM EMS [ethylmethanesulfonate]. In the combination treatments the LD50 dose for germination and survival was reached even at the low dose combination of 5 krad .gamma.-ray + 20 mM EMS. Higher doses resulted in lower pollen and seed fertility. The sterility was much enhanced in the combined treatments. The number of pods, seed yield and weight of seeds could be stimulated with 10 and 15 krad doses of .gamma.-rays and 20 mM of EMS. In combination treatments such a stimulatory effect was noticed in seed weight only.