Mechanisms of Resistance and Their Interactions in Twelve Sources of Resistance to Biotype E Greenbug (Homoptera: Aphididae) in Sorghum
Authors: DIXON, OLONJU A. G.; BRAMEL-COX, P. J.; REESE, J. C.; HARVEP, T. L.
Source: Journal of Economic Entomology, Volume 83, Number 1, February 1990 , pp. 234-240(7)
Publisher: Entomological Society of America
Abstract:Evaluation of mechanisms of resistance among 12 grain sorghum, Sorghum meolor (L.) Moench, sources of resistance to the biotype E greenbug, Sehizaphis graminum (Rondani), indicated that the most important mechanism within this germplasm seemed to be antibiosis (with a few exceptions). The source with the highest level of overall resistance was PI266965, which had also the highest level of antibiosis. The highest level of tolerance was found in PI229828,and the highest level of antixenosis was found in 'J242.' All mechanisms of resistance in the various plant stages were independent, and only antibiosis in the seedling stages was highly related to average damage score from the usual flat screening technique. Principal component analysis was used to develop an index to maximize variation among accessions, describe each germplasm's overall resistance, and compare the known sources of resistance with any susceptible sources or any new sources of resistance in relation to host plant interactions.
Document Type: Research Article
Publication date: 1990-02-01
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
- Editorial Board
- Submit a Paper
- Subscribe to this Title
- Information for Advertisers
- Visit this journal's homepage
- ingentaconnect is not responsible for the content or availability of external websites