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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic diversity and population structure of a common bean (Phaseolus vulgaris L.) collection from Calabria (Italy)
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Genetic diversity and population structure of a common bean (Phaseolus vulgaris L.) collection from Calabria (Italy)

机译：卡拉布里亚（意大利）的普通豆（菜豆）的遗传多样性和种群结构

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摘要

Eighty-seven Phaseolus vulgaris landraces, still cultivated in Calabria (Italy), were investigated in order to study the patterns of common bean genetic diversity in this region, to better understand the evolutionary development of beans in Europe and to properly manage these genetic resources. Four American accessions and five Italian varieties were also included. Different markers, such as 12 microsatellites, seed traits, phaseolins and 100-seed weight were combined with different statistical approaches. For each microsatellite, expected (H e ) and observed (H o ) heterozygosities, polymorphism information content (PIC), probability of identity (PI) and homozygosity were calculated. Furthermore, in Calabrian group of bean landraces, total (N a ) and private (N pa ) number of alleles, observed (H o ), expected heterozygosities (H e ) and allelic richness (AR) were calculated. Genetic distances among landraces were estimated using Nei’s coefficient and a cluster analysis using the UPGMA algorithm was performed. The results clearly indicated that: (1) Calabrian germplasm showed a high level of diversity (H e  = 0.595); (2) Mesoamerican and Andean gene pools were clearly distinguished in Calabrian germplasm, with the Andean gene pool predominating (83 %); (3) Calabrian landraces were largely hybridized within and between the gene pools. A model-based approach, using the STRUCTURE software, was adopted. Six groups, including 4 of Andean origin and one of Mesoamerican origin were identified. Even more interesting, a small group (8 %) showed a distinct genetic structure, in which interspecific hybridizations with runner bean (Phaseolus coccineus L.) could have occurred. Nevertheless, a relatively high proportion of Calabrian bean landraces (12.6 %) was derived from intra and interspecific hybridizations.
机译：调查了仍在卡拉布里亚（意大利）种植的八十七种菜豆，以研究该地区常见豆类遗传多样性的模式，以便更好地了解欧洲豆类的进化发展并适当管理这些遗传资源。还包括四个美国种质和五个意大利品种。将不同的标记物（如12个微卫星，种子性状，菜豆和100粒重）与不同的统计方法结合在一起。对于每个微卫星，计算了预期的（H e）和观察到的（H o）杂合度，多态性信息含量（PIC），同一性概率（PI）和纯合度。此外，在卡拉布里亚（Calabrian）豆类地方品种组中，计算了观察到的总等位基因（H a）和预期的杂合度（H e）和等位基因丰富度（AR）的等位基因总数（N a）和私有（N pa）。使用Nei系数估算地方种之间的遗传距离，并使用UPGMA算法进行聚类分析。结果清楚地表明：（1）卡拉布里亚种质表现出很高的多样性（H e = 0.595）; （2）中美洲和安第斯族基因库在卡拉布里亚种质中有明显区别，其中以安第斯族基因库为主（83％）; （3）卡拉布里亚地方品种在基因库内和基因库之间大量杂交。采用了使用STRUCTURE软件的基于模型的方法。确定了六组，包括安第斯血统的4个和中美洲血统的1个。更有趣的是，一小群（8％）显示出独特的遗传结构，其中可能发生了与红花菜豆（Phaseolus coccineus L.）的种间杂交。尽管如此，卡拉布里亚豆地方品种中相对较高的比例（12.6％）来自种内和种间杂交。

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  • 来源
    《Genetic Resources and Crop Evolution》 |2013年第3期|839-852|共14页
  • 作者

    Francesco Mercati; Maria Leone; Antonio Lupini; Agostino Sorgonà; Monica Bacchi; Maria Rosa Abenavoli; Francesco Sunseri;

  • 作者单位

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

    Dipartimento di Biotecnologie per il Monitoraggio Agroalimentare ed Ambientale (Bio.M.A.A.) Università degli Studi “Mediterranea” di Reggio Calabria">(1);

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  • 正文语种 eng
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  • 关键词

    Cluster analysis; Intra-and inter-specific hybridization; Microsatellites–Simple Sequence Repeat (SSR); Phaseolus coccineus L.;

    机译：聚类分析;种内和种间杂交;微卫星－简单序列重复（SSR）;菜豆;

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