Identification and fine mapping of qGR6.2, a novel locus controlling rice seed germination under salt stress.

ABSTRACT:

Background

Rice growth is frequently affected by salinity. When exposed to high salinity, rice seed germination and seedling establishment are significantly inhibited. With the promotion of direct-seeding in Asia, improving rice seed germination under salt stress is crucial for breeding.

Results

In this study, an indica landrace Wujiaozhan (WJZ) was identified with high germinability under salt stress. A BC₁F₂ population derived from the crossing WJZ/Nip (japonica, Nipponbare)//Nip, was used to quantitative trait loci (QTL) mapping for the seed germination rate (GR) and germination index (GI) under H₂O and 300 mM NaCl conditions. A total of 13 QTLs were identified, i.e. ten QTLs under H₂O conditions and nine QTLs under salt conditi

SUBMITTER: Zeng P 

PROVIDER: S-EPMC7797128 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature