Mutagen sensitivity of two pigeonpea cultivars to ethyl methane sulphonate and gamma rays

Yadav, P.B.S.; Padmaja, V.

Journal of Phytological Research 17(1): 67-69


Accession: 004243921

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Two pigeon pea cultivars (ICPL 93115 and ICPL 93117) were treated with different doses of gamma -rays (15, 25 and 35 Kr) and ethyl methanesulfonate (0.1, 0.2 and 0.3% EMS) alone and in combination. Seedling and mature plant parameters were studied in M1 and M2 generations. ICPL 93115 and ICPL 93117 showed dose dependency for germination, survival, seedling, as well as for mature plant parameters in the mutagen-treated population (M1). On the other hand, combination treatments (15 Kr+0.1% EMS) showed pronounced effects rather than in treatment with individual mutagens. Both the mutagens in general and EMS in particular appear to exert teratogenic properties manifested in the form of morphological abnormalities of the seedlings in the two cultivars, most of which attain normal phenotype as the seedlings grow. Further, frequencies of deleterious effects of the two mutagens were more in ICPL 93117 than in ICPL 93115.