Breeding Science
Online ISSN : 1347-3735
Print ISSN : 1344-7610
Research Papers
Mapping three new interspecific hybrid sterile loci between Oryza sativa and O. glaberrima
Peng XuJiawu ZhouJing LiFengyi HuXianneng DengSufeng FengGuangyun RenZhi ZhangWei DengDayun Tao
Author information
JOURNALS FREE ACCESS FULL-TEXT HTML

2014 Volume 63 Issue 5 Pages 476-482

Details
Abstract

Hybrid sterility hinders the transfer of useful traits between Oryza sativa and O. glaberrima. In order to further understand the nature of interspecific hybrid sterility between these two species, a strategy of multi-donors was used to elucidate the range of interspecific hybrid sterility in this study. Fifty-nine accessions of O. glaberrima were used as female parents for hybridization with japonica cultivar Dianjingyou 1, after several backcrossings using Dianjingyou 1 as the recurrent parent and 135 BC6F1 sterile plants were selected for genotyping and deducing hybrid sterility QTLs. BC6F1 plants containing heterozygous target markers were selected and used to raise BC7F1 mapping populations for QTL confirmation and as a result, one locus for gamete elimination on chromosome 1 and two loci for pollen sterility on chromosome 4 and 12, which were distinguished from previous reports, were confirmed and designated as S37(t), S38(t) and S39(t), respectively. These results will be valuable for understanding the range of interspecific hybrid sterility, cloning these genes and improving rice breeding through gene introgression.

Information related to the author
© 2014 by JAPANESE SOCIETY OF BREEDING
Previous article Next article
feedback
Top