The present investigation was designed to improve the
genetic constitution of mungbean through gamma
radiation induced mutation breeding approach to identify
some high yielding mutant genotypes having extra short
maturity duration. Three mungbean germplasms lines were
exposed to gamma irradiation with three different doses
and desirable mutants were selected from M2 through M5
generations. A total number of twenty mutant individuals
from M5 generation were identified as promising mutants
having early maturity duration (<55 days) with high yield
(>25 g seed yield plant-1). Among them, six were found to
be extra ordinary mutants with extra early maturity dutation
of <53 days with > 30g seed yield plant-1. Such mutants
were not only high yielding extra early maturing type than
their parents but also had synchrony in pod maturity, nonshattering pod and top fruitbearing habit. The identified
mutants may be directly released as cultivars after their
multilocation trials and can also be used as donor for
improvement of mungbean with respect to earliness and
yield.
Keywords: Gamma radiation, germplasm, mungbean, mutation breeding, seed yield
Year: 2018
Volume: 78
Issue: 2
Article DOI: 10.5958/0975-6906.2018.00030.5
Print ISSN: 0019-5200
Online ISSN: 0975-6906
Moushree Sarkar info_circle
Sabyasachi Kundagrami info_circle