(1979), Mitochondrial recombination in cytoplasmic hybrids of Nicotiana tabacum by protoplast fusion. (1991), Complex determination of male sterility in Thymus vulgaris L.: genetic and molecular analysis. (1987), The transfer of cytoplasmic male sterility to winter-type oilseed rape ( Brassica napus L.) by protoplast fusion. (1991), Hybrid seed using nutritional mutants. (1964), Viruses and cytoplasmic heredity. Agrow, 133, 19.Īnonymous (1991b), Purdue releases new male sterile tomato breeding system for joint licensing. 1–46.Īnonymous (1991a), Increasing interest in male sterility. (1977), Breeding methodology for population improvement in sunflower. This process is experimental and the keywords may be updated as the learning algorithm improves.Īnand, I.J. These keywords were added by machine and not by the authors. Of the three types of male sterility mentioned, pollen sterility is by far the most common and the only one that has played a major role in plant breeding and hybrid seed production. As a consequence male sterility is sometimes divided into: (a) ‘Pollen sterility’ in which male sterile individuals differ from normal only in the absence or extreme scarcity of functional pollen grains (b) ‘Structural or staminal male sterility’ in which male flowers or stamens are malformed and non-functional or completely absent (c) ‘Functional male sterility’ in which perfectly good and viable pollen is trapped in indehiscent anthers and thus prevented from functioning. Male sterility in plants implies an inability to produce or to release functional pollen, and is the result of failure of formation or development of functional stamens, microspores or gametes.
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