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Genetic Analysis Of Drought Tolerance In Rice (Oryza Sativa L.), Uttam Bhattarai
Genetic Analysis Of Drought Tolerance In Rice (Oryza Sativa L.), Uttam Bhattarai
LSU Doctoral Dissertations
Drought is a major challenge in rice production system worldwide. We conducted a phenotypic screening of the USA rice genotypes for drought tolerance and assessed genetic diversity using SSR markers. Identification of QTLs for drought tolerance during both vegetative and reproductive stage was done using genotyping by sequencing (GBS) based saturated SNP linkage map. The rice genotypes Jes, Leah, Roy J, Jazzman, and Madison were found to be drought tolerant. Population structure analysis grouped the USA rice genotypes into California, Louisiana, and Arkansas types. Marker-trait association showed that markers RM570 and RM351 were significantly associated with grain yield, spikelet fertility, …