Elkonin, L.A. and Kozhemyakin, V.V. and Ishin, A.G. (1998) Nuclear-cytoplasmic interactions in restoration of male fertility in the ‘9E’ and A4 CMS-inducing cytoplasms of sorghum. TAG Theoretical and Applied Genetics , 97 (4). pp. 626-632.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Restricted to ICRISAT researchers only |
Abstract
The genetics of male-fertility restoration in sorghum in the ÔÔ9EÕÕ and A4 CMS-inducing cytoplasms, was studied by crossing a number of fertility restorer lines of A1 cytoplasm to CMS lines [9E]T]398 and [A4]T]398 and the line [9E]Milo- 10, which was obtained by backcrossing Milo-10 to [9E]T]398. It was revealed that both A4 and ÔÔ9EÕÕ cytoplasms are characterized by a sporophytic mode of restoration of male fertility. Depending on the nuclear background of the male parents, fertility restoration was controlled by one or two dominant genes. Fertilityrestorer genes of one of the tester lines, KVV-114, were e¤ective in [9E]T]398 but could not restore [9E]Milo-10. A fertile line obtained from the fertile hybrid [9E]T]398/KVV-112, with ÔÔ9EÕÕ cytoplasm, also failed to restore [9E]Milo-10. In a number of hybrid combinations with both A4 and ÔÔ9EÕÕ cytoplasms a novel and unusual phenomenon of gradual restoration of male fertility in subsequent backcross generations was observed. Pollen from the fertile revertants did not transmit fertility restoration in progeny from crosses with the original CMS line and was poorly transmitted in sib-crosses. The appearance of fertile revertants and the di¤erent reactions of di¤erent CMS lines with the same cytoplasm in test-crosses may be caused by the action of recessive nuclear genes of the recurrent male parents that were accumulated during backcrossing; these may induce changes in cytoplasmic genes controlling CMS.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Sorghum bicolor á Cytoplasmic male sterility á Cytoplasmic mutations á Fertility-restorer genes á Fertility reversions |
| Author Affiliation: | 1.Institute of Agriculture for South-East, 7 Tulaikova str., 410020 Saratov, Russia RU |
| Subjects: | Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 14 Apr 2012 10:14 |
| Last Modified: | 14 Apr 2012 10:14 |
| Official URL: | http://dx.doi.org/10.1007/s001220050938 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4573 |
Actions (login required)
 |
View Item |
