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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic diversity of glutenin protein subunits composition in durum wheat landraces [Triticum turgidum ssp. turgidum convar. durum (Desf.) MacKey] from the Mediterranean basin.
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Genetic diversity of glutenin protein subunits composition in durum wheat landraces [Triticum turgidum ssp. turgidum convar. durum (Desf.) MacKey] from the Mediterranean basin.

机译：硬粒小麦本地种中谷蛋白蛋白亚基组成的遗传多样性[Triticum turgidum ssp。曲霉变种杜伦（Desf。）MacKey]，来自地中海盆地。

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摘要

The genetic diversity of high and low molecular weight glutenin subunits of 63 durum wheat landraces from different geographical regions in the Mediterranean Basin was studied using SDS-PAGE. Great variability in glutenin composition was found, with 42 high and low molecular weight glutenin haplotypes, 20 allele combinations at the HMW-GS loci, and 18 at the LMW-GS. All five possible LMW models were detected in all Mediterranean regions. Rare alleles were found at Glu-B1 locus in high frequencies and a priori related alleles to grain quality were also observed. Global genetic diversity index was relatively high (0.67); it ranged from 0.33 to 0.66. Cluster analysis on the frequency patterns of origins grouped genotypes following a geographical structure. Rogers' distance coefficient on frequency pattern for each region of origin showed two germplasm pools with distinct quality profiles, where South West Asian landraces were very different from the landraces of other Mediterranean areas. The relationship between different regions of origin is discussed and two possible ways of introduction of wheat in the Iberian Peninsula (N Africa and SE Europe) are hypothesized. The use of Mediterranean durum wheat landraces as source of genetic variability for grain quality improvement is highly recommended..
机译：利用SDS-PAGE技术研究了地中海盆地63个不同地区硬粒小麦地方品种高，低分子量谷蛋白亚基的遗传多样性。发现谷蛋白的组成具有很大的可变性，具有42种高和低分子量谷蛋白单倍型，在HMW-GS基因座处有20个等位基因组合，在LMW-GS处有18个等位基因组合。在所有地中海地区都检测到了所有五个可能的LMW模型。在Glu-B1基因座上发现了高频率的稀有等位基因，并且还观察到了与谷物品质相关的先验等位基因。全球遗传多样性指数较高（0.67）;它的范围从0.33到0.66。根据地理结构对基因型分组的起源频率模式进行聚类分析。罗杰斯在每个起源地区的频率模式上的距离系数显示出两个具有不同质量特征的种质库，其中西南地区的地方品种与其他地中海地区的地方品种差异很大。讨论了不同产地之间的关系，并提出了在伊比利亚半岛（非洲北部和欧洲东南部）引入小麦的两种可能方式。强烈建议使用地中海硬粒小麦本地品种作为遗传变异的来源，以提高谷物品质。

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