Laboratoire de Cytogénétique, Université de Louvain, Place Croix-du-Sud, 4, B-1348 Louvain-la-Neuve, Belgium.
Genetics. 1981 Sep;99(1):169-81.
A study is described of the influence of the introduction of a dominant nuclear restorer gene into a cytoplasmic gynodioecious plant population. This study includes the consideration of separate effects on the relative female fertility of nuclear, cytoplasmic and sex (phenotypic) factors. Under these assumptions, the introduction of a dominant nuclear restorer gene into a cytoplasmic gynodioecious population can lead to several different situations: persistence of cytoplasmic gynodioecy, appearance of a nuclear-cytoplasmic gynodioecy, appearance of a nuclear gynodioecy or complete restoration of male fertility. The development of stable nuclear-cytoplasmic gynodioecy in a mathematical model is new and is possible because of the consideration of the separate relative female fertilities. The possibility of a transformation of cytoplasmic gynodioecy into a nuclear one has never been obtained before. It could constitute a route for the appearance of this latter kind of gynodioecy in plant populations. Finally, the possibilities of evolution of gynodioecy from one kind to the other, and towards dioecy, are discussed, as are some theoretical schemes that seem to correspond to observed actual situations.
描述了将显性核恢复基因引入细胞质雌雄异株植物群体中对其产生的影响。该研究考虑了核、细胞质和性（表型）因素的相对雌性育性的单独影响。在这些假设下，将显性核恢复基因引入细胞质雌雄异株群体中可能会导致几种不同的情况：细胞质雌雄异株的持续存在、出现核-细胞质雌雄异株、出现核雌雄异株或雄性育性完全恢复。在数学模型中，稳定的核-细胞质雌雄异株的发展是新的，并且是由于考虑了相对雌性育性的差异而成为可能。以前从未获得过将细胞质雌雄异株转化为核雌雄异株的可能性。这可能构成了植物种群中后者出现的途径。最后，讨论了从一种雌雄异株到另一种雌雄异株以及向雌雄同株进化的可能性，以及一些似乎与实际观察到的情况相对应的理论方案。
