Department to Crop Science, University of Guelph, Guelph, Canada
1Present address: Department of Ag. Botany, S. K. N. College of Agriculture, Jobner (303328), Rajasthan.
Online published on 25 January, 2012.
Three new recessive male sterility genes, one in the York line 101 and one in each of the two OAC-21 lines, 215 and 228, were found. The three genes are non-allelic to each other as well as to the 18 numbered, except ms-15, genes described by other workers. Female fertility of the male sterile plants was normal.
Temperature was found to be a potent factor affecting the expression of male sterility. At 30°G temperature during the light period and 25°G during dark, all the plants, including fertiles became male sterile. Female fertility was unaffected at this temperature. At low temperature, 15°C during light period, there was some restoration of fertility in the male sterile plants of the line 215 but not in others. Expression of male sterility was unaffected by the light intensity.
