A Novel Approach to Boost the Seed Cotton Yield via Irradiation to Enhance the Boll Weight and Boll Number in Diploid Cotton


Нe cultivation of desi cotton is restricted to a few pockets because of low yield level and non-preference of modern textile mills due to their low fiber length and strength. But desi cultivars have immense potential for adaptation to any of the soil types and climatic conditions (i.e. highly adoptive to both abiotic and biotic stress). By improving seed cotton yield level and fiber quality, these cultivars can become good choice in present days were we are sensing high levels of fluctuatLon in climatic conditions. Among desi cotton, cultivar, Jayadhar which belongs to G. herbaceum species released during 1950 and has been under commercial cultivation in Karnataka as a popular variety till date. Нere is need to improve Jayadhar with reference to its yielding ability and to enhance fiber quality mainly fiber length and strength. Hence, any programme to improve productivity of desi cotton is through component traits like boll weight and boll number traits. Mohan and Sharma experimentally demonstrated in pea, that additional variation could be generated in the F2 by irradiation at F1 stage have developed new improved variety in black gram by utilizing both gamma rays induced and hybridization. Hence, in present investigation, irradiation in combination with hybridization involving adapted parent and selected donors for boll weight, boll number and fibre quality traits to generate dLوٴerent progenies and to study extent of variability and isolation of superior progenies for seed cotton yield and fibre quality traits.