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首页> 外文期刊>Genetic Resources and Crop Evolution >Molecular analysis of genetic diversity in melon landraces (Cucumismelo L.) from Myanmar and their relationship with melon germplasm from East and South Asia
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Molecular analysis of genetic diversity in melon landraces (Cucumismelo L.) from Myanmar and their relationship with melon germplasm from East and South Asia

机译：缅甸瓜类地方品种（Cucumismelo L.）遗传多样性的分子分析及其与东亚和南亚瓜种质的关系

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摘要

Genetic diversity of Myanmar melon was evaluated by analysis of 27 RAPD markers and morphological characters using 41 accessions of melon landraces of which 36 accessions were small-seed type. The gene diversity was 0.239, higher than for group Conomon from East Asia and equivalent to Indian melon populations. Melon accessions were classified into six major clusters. The largest cluster IV comprised mainly group Conomon which was closely related to cluster V consisting of mainly group Agrestis. Most of the accessions of group Cantalupensis were grouped into clusters II or VII and were distantly related to groups Conomon and Agrestis. The genetic relationship to melon accessions from neighboring countries was analyzed. The 24 accessions of clusters IV and V were mostly clustered together with small-seed type melon of India, but the 14 accessions of clusters VI and VII were mostly clustered together with large-seed type melon of India. These results indicated that the genetic diversity of Indian melon is conserved in Myanmar. Genetic introgression among melon groups through spontaneous hybridization was also indicated and was considered important to maintain or increase the genetic diversity in Myanmar.
机译：通过分析41种甜瓜地方品种中的27种RAPD标记和形态特征，评估了缅甸甜瓜的遗传多样性，其中36种为小种子类型。基因多样性为0.239，高于东亚的Conomon组，相当于印度瓜种群。瓜类被分为六个主要类群。最大的IV组主要由Conomon组组成，而Conomon组与主要由Agrestis组组成的V组密切相关。 Cantalupensis组的大多数种被归类为II或VII类，与Conomon和Agrestis组关系较远。分析了与邻国甜瓜的遗传关系。 IV和V类群的24个种质大多与印度的小种子型甜瓜聚在一起，而VI和VII类群的14个种质则与印度的大种子型甜瓜聚在一起。这些结果表明缅甸甜瓜的遗传多样性得到了保留。还指出了通过自发杂交实现的瓜类之间的基因渗入，并且被认为对于维持或增加缅甸的遗传多样性很重要。

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