Influence of Cytoplasmic Male Sterility on Expression of Different Mechanisms of Resistance in Sorghum to Atherigona Soccata (Diptera: Muscidae).
From: International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, India.
Journal of economic entomology
- Publish Date: Aug 2006
- ISSN: 0022-0493
- Volume: 99
- Issue: 4
- Pages: 1452-61
- Medium: Print
- Language: English
- Citation (JAMA): Dhillon Mukesh K, Sharma Hari C, Naresh Jagdish S, et al. Influence of Cytoplasmic Male Sterility on Expression of Different Mechanisms of Resistance in Sorghum to Atherigona Soccata (Diptera: Muscidae).. J. Econ. Entomol. Aug 2006;99:1452-61
Abstract
Atherigona soccata (Rondani) (Diptera: Muscidae) is one of the most important pests of sorghum, Sorghum bicolor (L.) Moench, in Asia, Africa, and the Mediterranean Europe. Exploitation of cytoplasmic male sterility (CMS) for hybrid production has resulted in considerable narrowing of the genetic base and may increase the vulnerability of this crop to insect pests. Therefore, we studied the expression of different mechanisms of resistance in sorghum to A. soccata in CMS (A) and maintainer (B) lines of 12 genotypes under field and greenhouse conditions. The CMS lines of A. soccata-resistant genotypes were preferred for oviposition (78.5 versus 71.5% plants with eggs) and suffered greater deadheart incidence (47.6 versus 41.6%) than the corresponding maintainer lines, whereas such differences were not apparent in CMS lines belonging to the susceptible genotypes (92.7 versus 92.3% plants with eggs and 75.6 versus 74.6% deadhearts) under multichoice field conditions. Similar differences also were observed under controlled conditions in the greenhouse. The larval period (9.0 versus 8.8 d) and pupal mortality (18.4 versus 13.4%) were greater on maintainer lines than that on the CMS lines in the resistant group. The male and female pupal weights, fecundity, and antibiosis index were greater on the CMS than on the maintainer lines. The maintainer lines showed better recovery resistance than the CMS lines, but no such differences were observed in tiller deadhearts. The differences in susceptibility to A. soccata were greater in the A. soccata resistant CMS and maintainer lines than in the CMS and maintainer lines belonging to susceptible genotypes. Conversion of A. soccata-resistant genotypes into alternate less susceptible cytoplasmic backgrounds may be undertaken for developing sorghum hybrids with stable resistance to A. soccata.
Mesh Headings (Keywords): Animals, Cytoplasm, Female, Host-Parasite Interactions, Muscidae, Oviposition, Sorghum
Check for Full Text / PubMed Unique Identifier (PMID): 16937704
This abstract is part of PubMed, a service of the U.S. National Library of Medicine. PubMed includes more than 17 million citations from MEDLINE and other life science journals for biomedical articles. See Copyright and Disclaimers.
Linked medical terms appearing on this page are added by Healia to help readers find more information and are not part of the original PubMed document.
The data herein was last updated on July 8th, 2008 and may not reflect the most current and accurate data available from NLM.