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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic diversity of the US collection of Chinese hemlock Tsuga chinensis (Franch.) E. Pritz. based on simple sequence repeat markers
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Genetic diversity of the US collection of Chinese hemlock Tsuga chinensis (Franch.) E. Pritz. based on simple sequence repeat markers

机译:美国汇集中国铁杉的遗传多样性(Franch。)e.pritz。 基于简单的序列重复标记

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摘要

The Chinese hemlock, Tsuga chinensis (Franch.) E. Pritz., is becoming more well-known in U.S. landscapes as the native U.S. species (T. canadensis (L.) Carr.) is under attack from the hemlock woolly adelgid. It is important to understand the genetic diversity and relatedness among accessions of T. chinensis to drive decisions about collections management, breeding methods, and forest or ecosystem management. We used SSR markers to evaluate the genetic diversity of 96 samples representing 35 accessions of Chinese hemlock held in collections in the U.S. Using 88 alleles from eleven SSR loci, we found high levels of diversity between and within accessions. Our results indicate that significant genetic diversity is available in the existing U.S. collections of T. chinensis, and, based on collection data, represents the wild gene pool well. This characterization of germplasm can be valuable in choosing accessions for use in horticultural and landscape applications or as part of a hemlock breeding program.
机译:中国铁杉,Tsuga chinensis(Franch。)e.pritz。,在美国景观中越别名,作为原生植物的美国物种(T. canadensis(L.)carr。重要的是要了解T. Chinensis的遗传多样性和相关性,以驱逐关于收集管理,繁殖方法和森林或生态系统管理的决策。我们使用SSR标记来评估在美国的收集中持有的35种样本的遗传多样性,其中包括来自118个SSR基因座的88个等位基因,我们发现了高度的多样性和在加入中。我们的研究结果表明,基于收集数据的现有美国收藏品中有显着的遗传多样性可以很好地代表野生基因库。种质的这种表征在选择用于园艺和景观应用中或作为铁杉育种计划的一部分的应用中可以是有价值的。

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