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首页> 外文期刊>Genetic Resources and Crop Evolution >Diversity of 21 taro (Colocasia esculenta (L.) Schott) accessions of Andaman Islands
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Diversity of 21 taro (Colocasia esculenta (L.) Schott) accessions of Andaman Islands

机译：安达曼群岛的21种芋头（Colocasia esculenta（L.）Schott）品种的多样性

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摘要

The genetic diversity of taro (Colocasia esculenta (L.) Schott.) accessions growing naturally in Andaman Islands was analysed using morphological and DNA markers. Twenty one representative samples of C. esculenta from different parts of Islands in addition to three commercial varieties as reference genotypes were used in study. About 63% phenotypic variation was observed in C. esculenta A total number of 491 amplified fragments were obtained of which 347 showed polymorphic banding patterns. The accessions were grouped into two major clusters with both RAPD and ISSR markers with 56 and 57% diversity, respectively. The reference genotypes were grouped into one group and island population in other cluster. Both marker systems divided population into two sub clusters and showed correlation with morphological parameters. The diversity pattern observed in present study showed rich genetic diversity of C. esculenta in Andaman Islands provided simple strategy for reducing repeatability of taro germplasm in gene banks. The study also suggested pre-evaluation of germplasm using molecular and morphological markers to enhance efficiency of exploration trips.
机译：使用形态和DNA标记分析了在安达曼群岛自然生长的芋头（Colocasia esculenta（L.）Schott。）种的遗传多样性。除了三个商业品种作为参考基因型外，还使用了来自岛屿不同地区的二十个代表性弯孢藻样品。在蓝藻中观察到约63％的表型变异。共获得491个扩增片段，其中347个显示多态条带模式。将种质分为具有RAPD和ISSR标记的两个主要簇，多样性分别为56％和57％。参考基因型分为一组，另一类为岛群。两种标记系统均将种群分为两个亚群，并显示出与形态参数的相关性。在本研究中观察到的多样性模式表明，安达曼群岛的埃斯库伦特菌具有丰富的遗传多样性，为减少芋头种质在基因库中的重复性提供了简单的策略。该研究还建议使用分子和形态标记物对种质进行预评估，以提高勘探的效率。

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  • 来源
    《Genetic Resources and Crop Evolution》 |2012年第5期|p.821-829|共9页
  • 作者

    Shrawan Singh; D. R. Singh; F. Faseela; Naresh Kumar; V. Damodaran; R. C. Srivastava;

  • 作者单位

    Division of Horticulture &amp Forestry, Central Agricultural Research Institute, Port Blair, Andaman &amp Nicobar Islands, India;

    Division of Horticulture &amp Forestry, Central Agricultural Research Institute, Port Blair, Andaman &amp Nicobar Islands, India;

    Division of Horticulture &amp Forestry, Central Agricultural Research Institute, Port Blair, Andaman &amp Nicobar Islands, India;

    Division of Field Crops, Central Agricultural Research Institute, Port Blair, Andaman &amp Nicobar Islands, India;

    Division of Horticulture &amp Forestry, Central Agricultural Research Institute, Port Blair, Andaman &amp Nicobar Islands, India;

    Division of Horticulture &amp Forestry, Central Agricultural Research Institute, Port Blair, Andaman &amp Nicobar Islands, India;

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  • 正文语种 eng
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  • 关键词

    Andaman Islands; Colocasian esculenta (L.) Schott; Genetic diversity; Molecular markers; Morphological markers;

    机译：安达曼群岛;科洛卡斯食用菌;遗传多样性;分子标记;形态标记;

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