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QTL analysis on rice genotypes adapted to acid sulfate soils in the Mekong river delta, Vietnam

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Three target points in acid sulfate soils have been identified as: 1) Aluminum (Al) toxicity; 2) Iron (Fe) toxicity; 3) Phosphorous (P) deficiency; and 4) Droughts at the seedling stage. The exploitation of gene pools from wild rice species fruitfully obtained a true introgression of desirable traits into high yielding varieties (HYVs), such as AS996 (IR64/Oryza rufipogon), which are tolerant to Al-toxicity, have short durations, high yields, and adaptability to acid sulfate soils. Major QTLs on chromosome 3 were detected to control Al-toxicity as identified through an analysis of the RIL population of IR64/O. rufipogon on control relative root length (RRL). RM232 was considered as a good marker linked to the target quantitative trait locus (QTL) on chromosome 3, then SR28 and OSR29 on chromosome 9 were also used. | QTL analysis on rice genotypes adapted to acid sulfate soils in the Mekong river delta, Vietnam

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