Abstract
In the present context the generative genetic system is understood to be the system regulating the genetic composition of the progeny of an individual or of a population through generative (or, exceptionally, vegetative) reproduction. In the case of apospory, with vegetative reproduction as an extreme form, there is no generative reproduction in the strict sense. However, in the cases where true embryos in seeds are formed, it is convenient to consider apospory as a special form of generative reproduction with a special genetic system: the genetic composition is fundamentally identical to that of the parent, except for incidental mutations and somatic segregation.KeywordsMale SterilityHybrid VarietyPreferential PairingGene Male SterilityTetraploid HybridThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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