Genome-Wide Association Study of Local Thai Indica Rice Seedlings Exposed to Excessive Iron.

Excess soluble iron in acidic soil is an unfavorable environment that can reduce rice production. To better understand the tolerance mechanism and identify genetic loci associated with iron toxicity (FT) tolerance in a highly diverse indica Thai rice population, a genome-wide association study (GWAS) was performed using genotyping by sequencing and six phenotypic data (leaf bronzing score (LBS), chlorophyll content, shoot height, root length, shoot biomass, and root dry weight) under both normal and FT conditions. LBS showed a high negative correlation with the ratio of chlorophyll content and shoot biomass, indicating the FT-tolerant accessions can regulate cellular homeostasis when encountering stress.

Diverse genetic variation in maternal lineages with high heterogeneity among -conserved wild rice ( Griff.) developed in Thailand.

Wild rice, , is a genetic resource that can be used to improve cultivated rice, but its populations are now decreasing in terms of both size and number. Extensive research on wild rice has been conducted in Thailand, where two conservation sites have been preserved in natural areas where perennial wild rice predominates. The genetic structure of wild rice populations was investigated by examining both the chloroplast and nucleus genomes at sites of conservation site in Thailand.

Inconsistent diversities between nuclear and plastid genomes of AA genome species in the genus Oryza.

AA genome species in the genus Oryza are valuable resources for improvement of cultivated rice. Oryza rufipogon and O. barthii were progenitors of two domesticated rice species, O.