Sharma, H.C. (2001) Cytoplasmic male-sterility and source of pollen influence the expression of resistance to sorghum midge, Stenodiplosis sorghicola. Euphytica, 122 (2). pp. 391-395.
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Abstract
Sorghum midge, S. sorghicola, is an important pest of grain sorghum (Sorghum bicolor), and host plant resistance is an important aspect of control of this pest. This research investigated how cytoplasmic male sterility and source of pollen influence the expression of resistance to sorghum midge. Sorghum midge emergence was significantly lower in panicles of midge-resistant (ICSA 88019 and ICSA 88020) and midge-susceptible (296A and ICSA 42) cytoplasmic male sterile lines when pollinated with AF 28 - a midge-resistant restorer line, than in those pollinated with Swarna - a midge susceptible restorer line, indicating the presence of xenia effects. Maintainer lines (B-lines) of midge-resistant parents had significantly lower numbers of eggs and larvae than the B-lines of midge-susceptible parents. Male-sterile lines of both midge-resistant and midge-susceptible lines were equally susceptible, indicating that resistance to sorghum midge is influenced by factors in the cytoplasm of the B-line. These findings will have an important bearing on the production of hybrids with resistance to insects
| Item Type: | Article |
|---|---|
| Author Affiliation: | International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502 324, Andhra Pradesh, India |
| Subjects: | Plant Protection > Pesticides Plant Protection > Pests Crop Improvement > Plant Breeding |
| Divisions: | Sorghum |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 13 Apr 2011 06:07 |
| Last Modified: | 13 Apr 2011 06:07 |
| Official URL: | http://dx.doi.org/10.1023/A:1012995409298 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/1743 |
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