Genetic & cytogenetic analysis of spikelet sterliti in Indica X Japonica crosses of Oryza sativa L.
2000
Kumar, S. | Chakarbarti, S.N. (Indian Agricultural Research Institute, New Delhi (India))
Expression of variable degree of spiklet sterility in indica x japonica inter-subspecific crosses is one of the barriers in the exploitation of higher degree of heterosis manifested in such crosses. Twenty six inter-subspecific crosses derived from four japonicas and seven indicas (including two wide compatible varieties) and 12 F2 progenies were evaluated for spikelet fertility and sterility expression. Structural heterozygosity in highly sterial cross was not detected at various stages of meiosis. Therefore,chromosomal differentiation has not been attributed to spikelet sterility in the present .....
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