Identification of quantitative trait loci governing early germination and seedling vigor traits related to weed competitive ability in rice.

ABSTRACT: Weed competitive ability (WCA) is vital for the improvement of grain yield under direct-seeded and aerobic rice ecosystems where weeds are a major limiting factor. Early seed germination (ESG) and early seedling vigor (ESV) are the crucial traits for WCA. This study attempted to map the quantitative trait loci (QTLs) and hotspot regions governing ESG and ESV traits. A total of 167 BC₁F₅ selective introgression lines developed from an early backcross population involving Weed Tolerant Rice 1 (WTR-1) as the recipient parent and Y-134 as the donor parent were phenotyped for ESG and ESV traits. Analysis of variance revealed significant differences in ESG-related traits except for root length and in ESV-related traits except for plant height at 7 days after sowing. A total

SUBMITTER: Dimaano NGB 

PROVIDER: S-EPMC7510932 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature