Abstract
AbstractIn a series of three experiments during 1998‐99 and 1999‐2000 at Gazipur, Bangladesh, the causes of segregation of Ogura cytoplasmic genetic male sterility in local cultivars of radish were studied. Male‐sterile populations at the BC5 and BC6 generations were grown under a range of field temperatures for 2 years and the results on pollen fertility tests revealed that the expression of male sterility was not affected by temperature. Neither was a genotype‐year interaction found. The unexpected segregation observed in the male‐sterile backcross generations might be due to the presence of restorer alleles in the maintainer parents.
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