Koelewijn H P, Van Damme J M
Netherlands Institute of Ecology, Department of Plant Population Biology, Heteren.
Genetics. 1995 Apr;139(4):1749-58. doi: 10.1093/genetics/139.4.1749.
Inheritance of male sterility was studied in the gynodioecious species Plantago coronopus using five plants and their descendants from an area of approximately 50 m2 in each of six locations. The crosses were planned to test for cytoplasmic inheritance of male sterility. In four locations significant differences between reciprocal crosses were observed. The progenies of these reciprocal crosses were used in a crossing scheme designed to test whether these reciprocal differences were caused by different cytoplasmic types between the plants. In all four locations, the existence of at least two cytoplasmic types could be shown. Moreover, the results of the crosses between locations showed that the same two cytoplasmic types were present in all four locations. We therefore argue that there is only limited cytoplasmic variation in P. coronopus. In each cytoplasmic type a series of intermediate sex forms occurred. A marked difference in restoration level existed between the two cytoplasmic types. Plants with cytoplasmic type 2 hardly segregated male steriles, in contrast to plants with cytoplasmic type 1.
在雌雄异株物种海滨车前中，利用来自六个地点各约50平方米区域的五株植物及其后代研究了雄性不育的遗传。这些杂交实验旨在检验雄性不育的细胞质遗传。在四个地点观察到正反交之间存在显著差异。这些正反交的后代被用于一个杂交方案中，以测试这些正反交差异是否由植物之间不同的细胞质类型引起。在所有四个地点，都能证明至少存在两种细胞质类型。此外，不同地点之间的杂交结果表明，所有四个地点都存在相同的两种细胞质类型。因此，我们认为海滨车前的细胞质变异有限。在每种细胞质类型中都出现了一系列中间性别形式。两种细胞质类型在恢复水平上存在显著差异。与细胞质类型1的植物相比，细胞质类型2的植物几乎不分离出雄性不育植株。
