哈尔丹定律被扩展到具有性染色体的植物。

Haldane's rule is extended to plants with sex chromosomes.

机构信息

Department of Biology, 1001 East Third Street, Indiana University, Bloomington, Indiana 47405, USA.

出版信息

Evolution. 2010 Dec;64(12):3643-8. doi: 10.1111/j.1558-5646.2010.01095.x.

DOI:10.1111/j.1558-5646.2010.01095.x

PMID:20681984

Abstract

Haldane's rule is an empirical phenomenon that has been observed in animals with sex chromosomes. The rule states that the heterogametic sex (XY or ZW) will be “absent, rare, or sterile” following hybridization between two species. Despite the near ubiquity of Haldane's rule in animal hybridizations, it has not been documented in organisms other than animals. Here, we show evidence for both rarity and sterility in hybrid male but not female offspring in crosses between three dioecious plant species from the genus Silene with heteromorphic (XY) sex chromosomes. Our results are consistent with Haldane's rule, extending its applicability to plants with sex chromosomes.

摘要

哈尔丹定律是一个在具有性染色体的动物中观察到的经验现象。该定律指出，在两个物种杂交后，异配子性别（XY 或 ZW）将“缺失、罕见或不育”。尽管哈尔丹定律在动物杂交中几乎无处不在，但在动物以外的生物中尚未有记录。在这里，我们在三个来自石竹属的雌雄异株植物物种之间的杂交中显示了杂种雄性后代的稀有性和不育性，但雌性后代没有，这些物种具有异型（XY）性染色体。我们的结果与哈尔丹定律一致，将其适用性扩展到具有性染色体的植物。