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首页> 外文期刊>Tree Genetics & Genomes >Genetic and morphological characterization of chestnut (Castanea sativa Mill.) germplasm in Piedmont (north-western Italy)
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Genetic and morphological characterization of chestnut (Castanea sativa Mill.) germplasm in Piedmont (north-western Italy)

机译：皮埃蒙特（意大利西北部）板栗（Castanea sativa Mill。）种质的遗传和形态特征

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摘要

Castanea sativa Mill. is an important multipurpose tree species for north-western Italy, and specially for Piedmont Region. The preservation of its germplasm from the genetic erosion due to the changes in socio-economic structure of rural areas and specific pathogen attacks is critical. The principal aims of this work were to characterize the chestnut germplasm grown in Piedmont and investigate its genetic structure. Sixty-eight grafted chestnut trees were evaluated using 10 SSRs (simple sequence repeats) loci and 20 morphological descriptors. Thirty-six different genotypes were identified; the analysis of the genetic structure of this germplasm revealed that four gene pools contributed to the formation of the population sampled. In general, cultivars tended to group into a main gene pool on the basis of their prevalent use and growing area. These results are substantially in agreement with those of the cluster analysis that was carried out to estimate the genetic relationships among the cultivars. Morphological analyses showed large variation of traits among the individuals, related with the market destination of the nuts and useful for cultivar and clonal selection. Discriminant analysis was applied to find a correlation between genetic and morphological data: nut and leaf shape, nut hairiness and male flower type resulted to be the most discriminant traits associated with the genetic structure. In the end, this work clarified the genetic structure of the cultivated germplasm in Piedmont describing the main cultivars of the region, giving useful information for conservation and breeding purposes.
机译：栗木是意大利西北部，特别是皮埃蒙特地区的重要多用途树种。由于农村地区社会经济结构的变化和特定病原体的侵袭，保护其种质免受遗传侵蚀是至关重要的。这项工作的主要目的是表征皮埃蒙特生长的板栗种质并研究其遗传结构。使用10个SSR（简单序列重复）位点和20个形态学描述符评估了68棵嫁接的栗树。鉴定出三十六种不同的基因型。对这种种质的遗传结构的分析表明，四个基因库有助于抽样人群的形成。通常，根据品种的普遍用途和生长面积，它们倾向于将其归为主要的基因库。这些结果与聚类分析的结果基本一致，该聚类分析是用来评估品种之间的遗传关系的。形态分析表明，个体之间性状的差异很大，与坚果的市场目的有关，对品种和克隆选择很有用。应用判别分析发现遗传和形态数据之间的相关性：坚果和叶片的形状，坚果的毛羽和雄花的类型是与遗传结构最相关的特征。最后，这项工作阐明了皮埃蒙特栽培种质的遗传结构，描述了该地区的主要品种，为保护和育种目的提供了有用的信息。

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  • 来源
    《Tree Genetics & Genomes》 |2013年第4期|1017-1030|共14页
  • 作者

    Daniela Torello Marinoni; Aziz Akkak; Chiara Beltramo; Paolo Guaraldo; Paolo Boccacci; Giancarlo Bounous; Anna Maria Ferrara; Andrea Ebone; Elena Viotto; Roberto Botta;

  • 作者单位

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy;

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy,Dipartimento di Scienze Agro-Ambientali, Chimica e Difesa vegetale, Universita degli Studi di Foggia, via Napoli 25, 71100 Foggia, Italy;

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy;

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy;

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy,UOS di Grugliasco, Istituto di Virologia Vegetale-Consiglio Nazionale delle Ricerche (IVV-CNR), via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy;

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy;

    IPLA, Istituto per le Piante da Legno e l'Ambiente, corso Casale 476, 10132 Torino, Italy;

    IPLA, Istituto per le Piante da Legno e l'Ambiente, corso Casale 476, 10132 Torino, Italy;

    IPLA, Istituto per le Piante da Legno e l'Ambiente, corso Casale 476, 10132 Torino, Italy;

    Dipartimento di Scienze Agrarie, Forestall e Alimentari-DISAFA, Universita degli Studi di Torino, via Leonardo da Vinci 44, 10095 Grugliasco, (TO), Italy;

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  • 正文语种 eng
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  • 关键词

    Cultivar identification; Morphological traits; Simple sequence repeat (SSR); Genetic structure;

    机译：品种鉴定;形态特征简单序列重复（SSR）;遗传结构;

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