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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic diversity of barley (Hordeum vulgare L.) landraces from the central highlands of Ethiopia: comparison between the Belg and Meher growing seasons using morphological traits
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Genetic diversity of barley (Hordeum vulgare L.) landraces from the central highlands of Ethiopia: comparison between the Belg and Meher growing seasons using morphological traits

机译：埃塞俄比亚中部高地大麦（Hordeum vulgare L.）地方品种的遗传多样性：利用形态学特征比较Belg和Meher生长季节

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In Ethiopia, barley is generally grown in two different planting seasons per year: during the long rainy season (Meher) and the short rainy season (Belg). The aim of the present study was to assess for the first time the role of this ‘two-season system’ on the structure of the genetic diversity of the Ethiopian barley landraces. We characterised 3,170 individual genotypes from 106 landrace populations using eight morphological spike traits. The diversity within population was higher in the season where barley is more important (Belg), and in general, where its cultivation is in larger plots because of weaker ‘competition’ with others crops. This indicates that barley diversity has a complex relationship with variations in the surrounding agro-ecosystem. Overall, the divergence between the two seasons was quite small (3.4%), suggesting that seed flow does not occur independently across the years within the two seasons. This would affect the amount of mutations and historic recombination that have accumulated within these populations.
机译：在埃塞俄比亚，大麦通常每年有两个不同的种植季节：长雨季（Meher）和短雨季（比利时）。本研究的目的是首次评估“两季体系”在埃塞俄比亚大麦地方品种遗传多样性结构中的作用。我们使用八个形态学的穗状性状特征分析了来自106个地方种族的3170个个体基因型。在大麦更为重要的季节（比利时），种群的多样性较高，总的来说，由于与其他农作物的“竞争”较弱，大面积种植大麦。这表明大麦的多样性与周围农业生态系统的变化有着复杂的关系。总体而言，两个季节之间的差异很小（3.4％），这表明两个季节中的年份中种子流并不是独立发生的。这将影响这些人群中积累的突变和历史重组的数量。

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