GENETIC DIVERGENCE IN INDIAN MUSTARD
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Authors
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P.K. GOSWAMI
Regional Agricultural Research Station, Assam Agricultural University Garumuria Gaon
North Lakhimpur-787 001 Assam
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R.K. BEHL
Department of Plant Breeding, CCS, Haryana Agricultural University, Hissar-125 004
Keywords:
GENETIC DIVERGENCE, INDIAN MUSTARDAbstract
Precise information about the extent of genetic divergence and on characters used for discrimination among population is crucial in any crop improvement programme. The existence of heterosis in a hybrid usually demonstrates the existence of some degree of genetic diversity. Therefore, the nature and magnitude of genetic divergence and the characters contributing to genetic diversity were studied among fortythree genotypes of Indian mustard using D2 statistic. Days to 50% flowering (10.42%, 8.91%), days to maturity (23.80%, 22.64%), plant height (31.02%, 31.54%), primary branches (0.99%, 0.91%), secondary branches (2.31%, 1.92%), main shoot length (11.29%, 12.88%), siliquae on main shoot (6.83%, 7.77%), siliqua length (0.64%, 0.68%), seeds/siliqua (1.93%, 1.97), 1000-seed weight (0.84%, 0.79%), seed-yield/plant (4.42%, 3.47%) and oil content (6.27%, 6.48%) contributed to total divergence in varietal improvement programme.