Genome wide association analysis of cold tolerance at germination in temperate japonica rice (Oryza sativa L.) varieties.

ABSTRACT: A pool of 200 traditional, landraces and modern elite and old cultivars of rice, mainly japonica varieties adapted to temperate regions, have been used to perform a genome wide association study to detect chromosome regions associated to low temperature germination (LTG) regulation using a panel of 1672 SNP markers. Phenotyping was performed by determining growth rates when seeds were germinated at 25° and 15°C in order to separate the germination vigorousness from cold tolerance effects. As expected, the ability to produce viable seedlings varied widely among rice cultivars and also depended greatly on temperature. Furthermore, we observed a differential response during seed germination and in coleoptile elongation. Faster development at 15°C was observed in seeds from varieties tradition

SUBMITTER: Sales E 

PROVIDER: S-EPMC5560564 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature