Identification of Novel QTL Conferring Sheath Blight Resistance in Two Weedy Rice Mapping Populations.

ABSTRACT: BACKGROUND:Rice sheath blight (ShB) disease, caused by the pathogenic fungus Rhizoctonia solani, causes significant yield losses globally. US weedy rice populations, which are de-domesticated forms of indica and aus cultivated rice, appear to be more resistant to ShB than local japonica cultivated rice. We mapped quantitative trait loci (QTL) associated with ShB resistance using two F8 recombinant inbred line populations generated from crosses of an indica crop variety, Dee-Geo-Woo-Gen (DGWG), with individuals representing the two major US weed biotypes, straw hull (SH) and black hull awned (BHA). RESULTS:We identified nine ShB resistance QTL across both mapping populations. Five were attributable to alleles that affect plant height (PH) and heading date (HD), two growth traits that are kn

SUBMITTER: Goad DM 

PROVIDER: S-EPMC7090113 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature