Effects of Rf-1, Rf-3 and Rf-6(t) Genes on Fertility Restoration in Rice (Oryza sativa L.) with WA- and BT-type Cytoplasmic Male Sterility
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- Tada Yuichi
- School of Bionics, Tokyo University of Technology
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Genes involved in the fertility restoration (Rf) of wild-abortive (WA)-type cytoplasmic male sterility (CMS) in rice have not been clearly identified, because of the inconsistency of their number and map position. Although the Rf-1 genes, which restore Chinsurah Boro (BT)-type CMS, have been recently isolated, their effects on WA-type CMS are still unclear. In the present study, near-isogenic lines (NILs) of japonica rice, differing at Rf loci, were developed using marker-assisted selection (MAS) to determine the effect of each Rf gene on WA- or BT-cytoplasm in a japonica background. The NILs were crossed with a japonica CMS line, then the pollen and seed fertility of the hybrid plants was analyzed. The Rf-1 locus consisting of two Rf genes from IR36 was sufficient to restore fertility in the hybrids with BT-type CMS but conferred very little fertility to those with WA-type CMS. Rf-3 on chromosome 1, a weak Rf gene, and Rf-6(t) on chromosome 10 were unable to confer seed fertility to plants with BT-type or WA-type CMS. Both Rf genes, however, could accelate the development of abortive pollen in the case of WA-type CMS and their effect was additive. Crossing of CMS rice with chromosome segment substitution lines carrying Rf loci from IR24 resulted in similar pollen development and seed fertility.<br>
収録刊行物
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- Breeding Science
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Breeding Science 57 (3), 223-229, 2007
日本育種学会
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詳細情報 詳細情報について
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- CRID
- 1390282679698651136
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- NII論文ID
- 130004146114
- 110006388847
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- NII書誌ID
- AA11317194
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- ISSN
- 13473735
- 13447610
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- NDL書誌ID
- 8887418
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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