Improving bridge effect to overcome interspecific hybrid sterility by pyramiding hybrid sterile loci from Oryza glaberrima.

ABSTRACT: In order to evaluate the genetic effect caused by hybrid sterile loci, NILs with O. glaberrima fragment at six hybrid sterile loci under O. sativa genetic background (single-locus-NILs) were developed; two lines harboring two hybrid sterile loci, one line harboring three hybrid sterile loci were further developed. A total of nine NILs were used to test cross with O. sativa recurrent parent, and O. glaberrima accessions respectively. The results showed that the sterility of pollen grains in F₁ hybrids deepened with the increase of the number of hybrid sterile loci, when the nine lines test crossed with O. sativa recurrent parent. The F₁ hybrids were almost completely sterile when three hybrid sterile loci were heterozygeous. On the other hand, the single-locus-NILs had

SUBMITTER: Li J 

PROVIDER: S-EPMC10754949 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature