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Cytoplasmic Male Sterility and Its Utilization for Heterosis Breeding in Rapeseed, Brassica napus L.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shiga, Toshio |
| Copyright Year | 1976 |
| Abstract | Heterosis breeding of rapeseed, Brassica napus L., seems promising in providing stability and high productivity for rapeseed production. However, heterosis breeding has not been practiced in rapeseed, because it has been impossible to produce hybrid seeds economically. Recently, Thompson (1972) reported a cytoplasmic male sterility found in F, generation from varietal rapeseed crosses. The present author and co-workers also found a cytoplasmic male sterile line in the progenies of varietal cross of Japanese rapeseed (Shiga and Baba 1971, 1973). Occurrence and characteristics of this male sterile line will be described in this paper. Test crossing of many rapeseed cultivars with this male sterile line and progeny test were conducted, and cultivars were classified into 9 classes according to their cytoplasmic differences and their fertility restorer gene(s). It was proved that this cytoplasmic male sterility could be maintained and also the fertility could be restored by crossing this male sterile line with appropriate cultivars. Extent of the occurrence of heterosis in intraspecific hybrids in Brassica napus will also be given, and finally the possibility of using the cytoplasmic male sterility in heterosis breeding will be discussed. |
| Starting Page | 178 |
| Ending Page | 182 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| Volume Number | 10 |
| Alternate Webpage(s) | https://www.jircas.go.jp/sites/default/files/publication/jarq/10-4-178-182_0.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
