岛屿环境中的可育橡树。II。赤栎（Quercus alnifolia Poech）与白栎（Q. nifolia Poech）有限杂交。[医]球虫属在一个混合的立场
Interfertile oaks in an island environment. II. Limited hybridization between Quercus alnifolia Poech and Q. coccifera L. in a mixed stand
摘要：
通过对川滇高山栎（Quercus alnifolia Poech）与川滇高山栎（Q. alnifolia Poech）的杂交和渐渗研究。[医]球虫属通过形态学性状、核DNA和叶绿体DNA标记等分析，研究了水稻的遗传多样性。研究地点是特罗多斯山脉（塞浦路斯）的混合林分，分析的材料包括成年树和特定母树的后代。形态性状的多变量分析表明，两种植物可以很好地区分使用简单的叶片形态测量参数。栎属遗传多样性〈动〉<动>较低。alnifolia比Q.核和叶绿体微卫星分析支持了两个种之间的高种间分化。四个指定的杂交种的中间性是通过叶形态测量和遗传数据来验证的。后代阵列分析提供的证据表明，种间杂交是罕见的。叶绿体基因组的有限渐渗进一步支持了这一发现。生殖障碍（如异步物候，合子后不兼容性）可能会导致这一结果。利用Q. Alnifolia作为花粉供体。开花物候和物种分布的差异可能影响了种内不同母树有效花粉云的基因流方向和遗传分化。
英文摘要：
Hybridization and introgression between Quercus alnifolia Poech and Q. coccifera L. is studied by analyzing morphological traits, nuclear and chloroplast DNA markers. The study site is a mixed stand on Troodos Mountains (Cyprus) and the analyzed material includes both adult trees and progenies of specific mother trees. Multivariate analysis of morphological traits shows that the two species can be well distinguished using simple leaf morphometric parameters. A lower genetic diversity in Q. alnifolia than in Q. coccifera and a high interspecific differentiation between the two species are supported by an analysis of nuclear and chloroplast microsatellites. The intermediacy of the four designated hybrids is verified by both leaf morphometric and genetic data. Analysis of progeny arrays provides evidence that interspecific crossings are rare. This finding is further supported by limited introgression of chloroplast genomes. Reproductive barriers (e.g. asynchronous phenology, post-zygotic incompatibilities) might account for this result. A directionality of interspecific gene flow is indicated by a genetic assignment analysis of effective pollen clouds with Q. alnifolia acting as pollen donor. Differences in flowering phenology and species distribution in the stand may have influenced the direction of gene flow and the genetic differentiation among effective pollen clouds of different mother trees within species.
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