Breeding high yielding desi chickpea (Cicer arietinum L.) mutants

摘要

Seeds of two desi chickpea varieties viz., Pb-91 and C-44 were irradiated at 300 and 400 Gys doses of gamma rays using 60Co during the year 2004. Raised M1and advanced mutated segregating generations, and gained phenotypic homozygosity from 2004 to 2009. High yielding and large seeded mutants were evaluated in replicated yield trials during 2009-10. Days to 50% flowering, 90% pods maturity, plant height, 100-grains weight and seed yield for mutants derived from Pb-91 ranged from 120 to 124 days, 169 to 174 days, 77 to 87 cm, 22 to 24 g 100-1grains and 1454 to 2011 kg ha-1, respectively. Similarly, the same parameters for the mutants derived from C-44 ranged from 120 to 127 days, 167 to 175 days, 72 to 97 cm, 20-25 g 100-1grains and 1079 to 2018 kg ha-1, respectively. Mutant NDC-20-5, NDC-15-1, NDC-25-13 and NDC-30-16 derived from Pb-91 produced significantly higher seed yields of 2011 kg ha-1, 1927 kg ha-1, 1873 kg ha-1and 1838 kg ha-1, respectively as compared to the average seed yield of 1598 kg ha-1of the standard check-NIFA-2005. Mutants derived from C-44 were significantly high yielding with seed yields range from 1803-2018 kg ha-1against average seed yield of the standard check (1598 kg ha-1). Mutant NDC-15-1 and NDC-30-16 from Pb-91 and NDC-4-30-3 from C-44 possessed highest 100-grains weights of 24 g 100-1grains, 24 g 100-1grains and 25 g 100-1grains, respectively among all other mutants of these two parents. The best performing mutant(s) with wider adoptability in different field tests will be released as mutant variety for general cultivation.