Reference "Mapping and genetic analysis of the genes for photoperiod-sensitive genic male sterility in rice using the original mutant Nongken 58S"

Reference ID

7022

Title

Mapping and genetic analysis of the genes for photoperiod-sensitive genic male sterility in rice using the original mutant Nongken 58S

Source

Crop Science, 1999, vol. 39, pp. 1711-1715

Authors (4)

Mei-M-H	Dai-X-K
Xu-C-G	Zhang-Q

Abstract

Photoperiod-sensitive genic male sterility (PSGMS) rice has a number of
desirable characteristics for hybrid rice production. In this study, we
conducted a molecular marker-based mapping and genetic analysis of PSGMS genes
using two crosses involving the original mutant Nongken 58S as the PSGMS parent.
The genomic locations of the PSGMS loci were determined following the "bulked
extreme and recessive class" approach, in which the regions containing the PSGMS
loci were identified by assaying the bulks of extreme phenotypes and the
distances between the PSGMS loci and molecular markers were calculated from the
highly sterile plants of the F2 populations. Two PSGMS loci, located on
chromosomes 7 and 12, respectively, were identified in both crosses. The locus
on chromosome 7 was the same as pms1, identified previously in a cross between
an indica PSGMS line and an indica cultivar. The one on chromosome 12 was a new
locus that we designated as pms3. Both loci had major effects on fertility and
acted like a pair of classical duplicated genes in controlling male sterility.
Comparison of the present finding with previous results indicated a complex
genetic basis of PSGMS. The implications of such genetic complexity in breeding
for PSGMS lines are also discussed.