Abstract:To discover new mutant alleles conferring enhanced tolerance to drought stress, we screened a mutagenized rice population (cv. IAPAR9) and identified a mutant, named idr1-1 (for increased drought resistance 1-1), with obviously increased drought tolerance under upland field conditions. The idr1-1 mutant possessed a significantly enhanced ability to tolerate high-drought stress in different trials. Map-based cloning revealed that the gene LOC_Os05g26890 (corresponding to D1 or RGA1 gene), residing in the mappin… Show more
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