Zorica S. Mitić, Jelena S. Nikolić, Marina Z. Jušković, Vladimir N. Ranđelović, Biljana M. Nikolić, Bojan K. Zlatković
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引用次数: 0
Key message
This study identified 10 fir populations that may be hybridogenous. The immediate activities on conservation of these polymorphic fir populations should be supported as hybrids may be ecologically and economically superior to the parent species.
Abstract
This is the first report on morpho-anatomical differentiation of both lower-rank and upper-rank needles in Abies alba, A. x borisii-regis, and A. cephalonica, using 18 native populations from almost the entire assumed hybrid zone in the Balkan Peninsula. The 35 morpho-anatomical characteristics were analyzed biometrically, and 18 with the application of multivariate statistical analysis. Clinal pattern in distribution of morpho-anatomical variation over the broader transition zone between the putative parent species was observed. Furthermore, the results of the biometric analyses justify the validity of this method for differentiating between the eastern A. alba lineage and A. cephalonica, for both needle types. Thus, the results of this study show clear differences between A. alba and A. cephalonica, but unstable characteristics of A. x borisii-regis. This finding supports the hypothesis that A. x borisii-regis is an unstabilized taxon produced by recent hybridization and introgression between A. alba and A. cephalonica. Based on the multivariate statistical analysis, 10 of the studied fir populations may be hybridogenous within a wider geographical area (southwestern and southern Bulgaria, southernmost North Macedonia and almost the entire Greece). The obtained results did not indicate a hybrid status for two fir populations from Peloponnese and one from the Cephalonia Island (pure A. cephalonica populations), which partly agrees with the recent molecular data.
本研究确定了10个杉木种群可能是杂交的。由于杂交物种在生态和经济上可能优于亲本物种，因此应支持对这些多态冷杉种群进行保护的立即行动。摘要本文首次利用来自巴尔干半岛几乎整个假定杂交带的18个本地种群，对alba、A. x borisii-regis和A. cephalonica三种冷杉(Abies alba)中低阶和高阶针叶的形态解剖分化进行了研究。35个形态解剖特征进行生物统计学分析，18个应用多元统计分析。观察到在假定的亲本种之间的更广泛的过渡区中形态解剖变异分布的临床模式。此外，生物特征分析的结果证明了这种方法在区分东部阿尔巴刺针谱系和头孢刺针类型方面的有效性。因此，本研究结果表明，白僵菌与头僵菌存在明显的差异，但其特征不稳定。这一发现支持了A. x borisii-regis是A. alba和A. cephalonica最近杂交渐近产生的不稳定分类群的假设。根据多元统计分析，在更广泛的地理区域(保加利亚西南部和南部、马其顿北部最南端和几乎整个希腊)，研究的冷杉种群中有10个可能是杂交的。得到的结果表明，来自伯罗奔尼撒半岛的两个冷杉种群和来自Cephalonia岛的一个冷杉种群(纯a. cephalonica种群)不存在杂交状态，这与最近的分子数据部分一致。
期刊介绍：
Trees - Structure and Function publishes original articles on the physiology, biochemistry, functional anatomy, structure and ecology of trees and other woody plants. Also presented are articles concerned with pathology and technological problems, when they contribute to the basic understanding of structure and function of trees. In addition to original articles and short communications, the journal publishes reviews on selected topics concerning the structure and function of trees.
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