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首页> 外文期刊>Genetic Resources and Crop Evolution >Pheno-morphological, agronomic and genetic diversity among natural populations of sulla (Hedysarum coronarium L.) collected in Sicily, Italy
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Pheno-morphological, agronomic and genetic diversity among natural populations of sulla (Hedysarum coronarium L.) collected in Sicily, Italy

机译：在意大利西西里岛采集的苏拉（Hedysarum coronarium L.）自然种群之间的表型，农艺和遗传多样性

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摘要

Sulla (Hedysarum coronarium L.) is a short-lived perennial forage legume that plays a key role in cereal-based systems in semi-arid Mediterranean regions, particularly in organic production and low-input oriented agriculture. In Sicily, the species is widespread both as a wild and cultivated plant. The present study assessed the phenotypic and genetic variation among natural populations of sulla collected from different environments throughout Sicily and analysed how the patterns of phenotypic diversity varied according to the environmental parameters of each collection site. Two commercial varieties and two Sicilian agro-ecotypes were also included in the study as controls. Principal components analysis (PCA) was performed on the sites using geographic, climatic, and pedological data to assess the differences in types of collection sites. PCA was also performed on the accessions (using pheno-morphological and agronomic data) to establish the importance of different traits in explaining multivariate polymorphisms. The results showed a large degree of genetic diversity (based on ISSR markers) and variability in pheno-morphological and agronomic traits. PCA did not clearly differentiate the accessions according to their habitats of origin, but in some cases accessions from the same habitat had a tendency to group together. The agronomic attributes of several populations were more pronounced than those of the controls. The observed variability may be valuable when selecting for H. coronarium varieties suitable for various uses (e.g., hay production, grazing, soil protection).
机译：Sulla（Hedysarum coronarium L.）是一种短命的多年生饲草豆科植物，在半干旱地中海地区的谷类系统（尤其是有机生产和低投入农业）中起着关键作用。在西西里，该物种既作为野生植物也作为种植植物而广泛传播。本研究评估了从整个西西里岛不同环境收集的苏拉自然种群之间的表型和遗传变异，并分析了表型多样性的模式如何根据每个采集地点的环境参数而变化。该研究还包括两个商业品种和两个西西里农业生态型作为对照。使用地理，气候和生态学数据对站点进行主成分分析（PCA），以评估收集站点类型的差异。还对种质进行了PCA（使用表型和农艺学数据），以建立不同性状在解释多元多态性中的重要性。结果显示出很大的遗传多样性（基于ISSR标记），以及表型和农艺性状的变异。 PCA并未根据原产地明确区分这些种质，但在某些情况下，来自同一生境的种质有趋向于聚在一起的趋势。与对照相比，几个种群的农艺属性更为明显。当选择适合各种用途（例如，干草生产，放牧，土壤保护）的冠状花冠线虫品种时，观察到的变异性可能很有价值。

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