Inheritance of functional male sterility in Streptocarpus Constant Nymph and its mutants |
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| Authors: | A C Zeven |
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| Institution: | (1) Institute of Plant Breeding (IvP), Agricultural University, Wageningen, the Netherlands |
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| Abstract: | Summary A study was made of the inheritance of functional male sterility of Streptocarpus Constant Nymph and its mutants. It was concluded that plants with genotypes Da. are male sterile although in rare cases a fruit may be produced. Plants with genotype data are fertile although the degree of fruit set greatly varies. This may have been caused by many factors including physiological abortion, as it was often observed that only one or two flowers of an inflorescence grow into fruits, the other remaining undeveloped.Some thoughts about the origin of this unfavourable allele and its survival in nature are presented.It is suggested that when sterility is observed, the cause of this sterility may be functional male sterility. |
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