Evaluating Traits Influencing Hybrid Paddy Seed Production using a Double Haploid Production Derived from Kalanamak Parental Combination

Abstract

Steps in double haploid breeding for genetic improvement of rice genetically diverse parents could reach the heterotic level of hybrid which pinpointed the prospect of anther culture technique in rice. DH lines with earliness, enhanced biomass production, high panicle density and increased yield potential with resistance top stand grain quality could be produced from anther culture of different crosses. DH lines from cv. 'Calrose 76' showed variation with improved agronomic characters e.g. seed number size, panicle size, plant height and tiller number and improved protein content and higher yields. Scientists reported high genetic variability for filled grains panicle -1 , grains yield plant -1 and number of panicles plant -1 among androgenic plantlets derived from scented Indica rice cv. 'Karnal local 95', suggesting the scope of haploid breeding for higher seed yield. Scientists developed 22 outstanding DHLs for high grain quality through anther culture. Scientists confirmed 98 lines to be DHs out of 232 lines recovered from 'Mahyco Hybrid MRP5401' which had dwarf height, early to late flowering and high yield characters. Development of improved DHs for kalanamak tolerance , submergence tolerance , and bacterial blight resistance , have been reported. Scientists recovered genetically uniform dwarf DHs from anther culture of an advance breeding line 'BR802-78-2-1-1'. A few of these DHs showed high fertility status of spikelet with long-bold and long-slender grain.