Induced mutations in sugarcane for tolerance to red rot disease under waterlogged condition
2002
Shamsuzzaman, K.M.(Bangladesh Institute of Nuclear Agriculture, Mymensingh (Bangladesh)) E-mail:[email protected] | Majid, M.A.(Bangladesh Institute of Nuclear Agriculture, Mymensingh (Bangladesh)) | Islam, M.M.(Bangladesh Institute of Nuclear Agriculture, Mymensingh (Bangladesh)) | Howlider, M.A.R.(Bangladesh Institute of Nuclear Agriculture, Mymensingh (Bangladesh)) | Samad, M.A.(Bangladesh Institute of Nuclear Agriculture, Mymensingh (Bangladesh))
Four varieties of sugarcane viz., Isd-2/54, Isd-16, Nagarbari and Latarijaba were irradiated with 20, 40 and 60 Gy gamma rays and the M1V1, generations were grown during 1991-92. About 10,000 M1V3 canes obtained from M1V2 generations were planted in low-lying plots for selecting water logging resistant lines. The plot was irrigated time to time 6 months after planting and continued until harvest. Irrigation and selections were carried out from M1V3 to M1V6 generations. Artificial inoculation was done in M1V5 and M1V6 generations for screening for resistance to red rot under waterlogged condition. A total of five mutants from the M1V5 generations viz., four from Ishurdi and one from Mymensingh were selected on the basis of greenness of the leaves, growth of the canes, number of nodes bearing adventitious roots, brix content, cane yield and disease reactions for growing in M1V6 generation. All of the mutants namely, Ias-2/54+20 Gy, Isd-2/54+40 Gy, Isd-16+20 Gy, Isd-16-+40 Gy and Ias-2/54+60 Gy, showed moderately resistant to red rot under waterlogged conditions and some of them produced higher cane yield than the parent-control varieties. The selected mutant lines will be tested in advanced, zonal and farmers field trial to fulfill the requirements of National Seed Board.
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