Polymorphic Diversity of Esterase Isozyme of Myanmar Rice Landraces

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  • ミャンマーイネ地方品種におけるエステラーゼアイソザイムの多型
  • ミャンマーイネ チホウ ヒンシュ ニ オケル エステラーゼアイソザイム ノ タケイ

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Abstract

Esterase isozymes have often used for investigating phylogenetic differentiation of rice land-races. Three loci of Est1, Est2 and Est3 have been identified where 2, 3, and 2 alleles are respectively included. The combinations of those alleles in the three loci produce 12 genotypes. Myanmar landraces are found to have eleven genotypes among them. Such genotypes as 1, 3 and 5 are more frequent than any others and most genotypes of esterase isozyme showed similarly frequencies in every region. The result indicated that Myanmar landraces have a wide range of genetic variation. The variation of esterase isozyme was considered to be neutral to natural and artificial selection as well. Genotypes of esterase isozyme were greatly diverse but no significant difference of genotypic frequency was observed among regions. The genotypes of esterase isozyme in Myanmar are as diverse as neighboring areas, as being reported earlier.

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