Charlesworth D, Laporte V
Institute of Cell, Animal and Population Biology, University of Edinburgh, Ashworth Laboratory, Edinburgh EH9 3JT, United Kingdom.
Genetics. 1998 Nov;150(3):1267-82. doi: 10.1093/genetics/150.3.1267.
Results are given of genetic studies of male sterility using plants from two natural populations from Sussex, England. Both populations have substantial frequencies of females, approximately 0.25 in population 1 and 0.60 in population 3. As in the few other gynodioecious populations studied in detail, many genetic factors are present. In population 1, there are at least two, and more likely three, different cytoplasmic types, one of which appears to produce male sterility in progeny from any hermaphrodite pollen donor; in other words restorer alleles for this cytoplasm are rare or absent from the population. The other two populations can be carried in hermaphrodites that have the dominant restorers. In population 1, there are also probably three restorer loci with complementary recessive male-sterility alleles, as well as a locus with duplicate action, which cannot produce male sterility unless the plant is also homozygous for the recessive allele at another locus. The results from population 3 are quite similar, though there was no evidence in this population for an unrestored sterility cytoplasm. A similar joint nucleocytoplasmic model with multiple restorers fits data from Thymus vulgaris.
给出了利用来自英国苏塞克斯郡两个自然种群的植物进行雄性不育基因研究的结果。两个种群中雌性个体都占有相当比例，种群1中约为0.25，种群3中约为0.60。与其他经过详细研究的少数雌全异株种群一样，存在许多遗传因素。在种群1中，至少有两种，更可能是三种不同的细胞质类型，其中一种似乎能使任何雌雄同体花粉供体的后代产生雄性不育；换句话说，该种群中这种细胞质的恢复基因等位基因很少见或不存在。另外两个种群可由具有显性恢复基因的雌雄同体携带。在种群1中，可能还有三个具有互补隐性雄性不育等位基因的恢复基因位点，以及一个具有重复作用的位点，除非植物在另一位点上也为隐性等位基因纯合，否则该位点不会产生雄性不育。种群3的结果非常相似，不过该种群中没有证据表明存在未恢复育性的不育细胞质。一个类似的具有多个恢复基因的核质联合模型符合百里香的数据。
