Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: PBR-121-363

[Submit comment/correction]

Reference	PBR-121-363
Title	Comparison of two fertility restoration systems against photoperiod-sensitive cytoplasmic male sterility in wheat
Journal	Plant Breeding
Year	2002
Volume	121
Pages	363-365
Author	Murai K
Abstract	Summary: A 'two-line system' using photoperiod-sensitive cytoplasmic male sterility (PCMS) caused by Aegilops crassa cytoplasm under a long-day photoperiod (greater than or equal to 15 h) has been proposed as a new means of producing hybrid varieties in common wheat. The PCMS line is maintained by self-pollination under short-day conditions, and hybrid seeds can be produced through outcrossing of the PCMS line with a pollinator under long-day conditions. Two kinds of fertility restoration systems against the PCMS are known. One is involved with a set of multiple fertility-restoring (Rf) genes in the wheat cultivar 'Norin 61' located on (at least) chromosomes 4A, 1D, 3D and 5D. The other is controlled by a single dominant major Rf gene, Rfd1, located on the long arm of chromosome 7B in the wheat cultivar 'Chinese Spring'. To examine the degree of fertility restoration by these two systems, nine PCMS lines were crossed with 'Norin 61' and 'Chinese Spring' as the restorer lines, and the F1 hybrids were investigated. The degree of fertility restoration was estimated by comparing the seed set rates in the F1 hybrids having the Ae. crassa cytoplasm and those with normal cytoplasm. The results revealed that the fertility restoration ability of a set of multiple Rf genes in 'Norin 61' was higher than that of the Rfd1 gene in 'Chinese Spring'
Keyword	[ Hide all but 1 of 37 ] abilities aegilops aegilops crassa aegilops crassa cytoplasm chinese chinese spring common wheat crassa cytoplasm cultivar cytoplasm cytoplasmic male sterility dominant fertility fertility restoration gene genetic analysis hybrid hybrid varieties hybrid wheat long arm multiple outcrossing photoperiod photoperiod-sensitive cms restoration restorer lines rf gene rice seed seed set self-pollination short day spring sterility system triticum aestivum wheat cultivar

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.