Genetic Erosion from Modern Varieties into Traditional Upland Rice Cultivars (Oryza sativa L.) in Northern Thailand
作者： R. Ishikawa , S. Yamanaka , Y. Fukuta , S. Chitrakon , C. Bounphanousay
DOI: 10.1007/S10722-004-6132-Y
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摘要: The purpose of this study was to assess the extent genetic erosion traditional upland germplasm in northern Thailand as a result gene-flow from distinct strains carrying different genotypes. Even modern variety specific markers have not been developed, there is comparative population Laos. Thus, both populations were compared with various characters evaluate landraces. Glutinous and glabrous are predominated However, such drastically decreased north–east Thailand. Gene diversity higher Thailand, Laos at seven isozyme loci. This frequencies Indica heterozygotes Plastid type also determined by using an INDEL marker. Nearly half carried Japonica plastid. Heterozygotes tended carry cytoplasm. Such nuclear–cytoplasm substituted probably generated natural hybridization. be maternal donor rather than ones. Or would easily release pollens, which grow outside fields.
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