A codominant DNA marker closely linked to the rice nuclear restorer gene, Rf-1, identified with inter-SSR fingerprinting
- 1 December 1996
- journal article
- Published by Canadian Science Publishing in Genome
- Vol. 39 (6) , 1205-1209
- https://doi.org/10.1139/g96-152
Abstract
A new molecular marker (OSRRf) closely linked to the nuclear restorer gene (Rf-1) for fertility in rice has been found. The Rf-1 gene is essential for hybrid rice seed production. A PCR-fingerprinting technique using simple sequence repeats (SSRs) was applied to compare two near-isogenic lines with (MTC-10R) or without (MTC-10A) the Rf-1 gene. Of 76 inter-SSR primers tested, only one primer, (AG)8YC, generated polymorphisms. The tetranucleotide repeats generating polymorphisms were found within each amplicon. The genetic distance between OSRRf and Rf-1 was 3.7 ± 1.1 cM. As in the case of a codominant marker, this marker will be applied not only to breeding both restorer lines and maintainer lines, but also to the purity management of hybrid rice seeds. Key words : Oryza sativa L., restorer gene Rf-1, microsatellite, inter-repeat fingerprinting.Keywords
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