Validating a segment on chromosome 7 of japonica for establishing low-cadmium accumulating indica rice variety.

ABSTRACT: Cadmium (Cd) contamination of rice is a serious food safety issue that has recently been gaining significant public attention. Therefore, reduction of Cd accumulation in rice grains is an important objective of rice breeding. The use of favourable alleles of Cd accumulating genes using marker-assisted selection (MAS) is theoretically feasible. In this study, we validated a segment covering OsHMA3-OsNramp5-OsNramp1 on chromosome 7 of japonica for establishing low-cadmium accumulating indica rice variety. The OsHMA3-OsNramp5-OsNramp1^jap haplotype significantly decreased grain Cd concentration in middle-season indica genetic background. The improved 9311 carrying the OsHMA3-OsNramp5-OsNramp1^jap haplotype with recurrent parent genome recovery of up to 91.6% resulted in ap

SUBMITTER: Wang K 

PROVIDER: S-EPMC7961068 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature