Molecular analysis of genetic diversity in melon landraces (Cucumis melo L.) from Myanmar and their relationship with melon germplasm from East and South Asia

San San Yi, Yukari Akashi, Katsunori Tanaka, Tin Tin Cho, May Thin Khaing, Hiromichi Yoshino, Hidetaka Nishida, Tatsuya Yamamoto, Kyaw Win, Kenji Kato

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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.

Original languageEnglish
Pages (from-to)1149-1161
Number of pages13
JournalGenetic Resources and Crop Evolution
Issue number8
Publication statusPublished - Nov 1 2009



  • Cucumismelo
  • Genetic diversity
  • Genetic resources
  • Myanmar
  • RAPD
  • Seed size

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Genetics
  • Plant Science

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