Resistance in bloomless and sparse-bloom sorghum to greenbugs

Starks, K.J. and Weibel, D E (1981) Resistance in bloomless and sparse-bloom sorghum to greenbugs. Environmental entomology, 10 (6). pp. 963-965.

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Abstract

Four bloomless (bm bm) and three sparse-bloom (h h) sorghum entries were evaluated for resistance to biotype C of the greenbug, Schizaphis graminum (Rondani), in field tests at Stillwater, Okla., in 1975 and 1976, and the results were compared with those from seven greenbug-susceptible and two greenbug-resistant lines with bloom (Bm). Both bloomless and sparse-bloom entries reduced the reproduction of greenbugs and damage from natural infestations; however, reproduction and damage were not reduced when greenbugs were confined to small leaf cages. Results of tests in large cages suggested that the resistance in bm bm and h h lines may not be effective in seedling sorghum or against the apterous form of the greenbug. Nonpreference was suggested as the mechanism of resistance

Item Type: Article
Author Affiliation: Agricultural Research, Science and Education Administration, U.S Department of Agricultural, Department of Entomology and Department of Agronomy, Oklahoma State University, Stillwater, Oklahoma -74078.
Subjects: Crop Improvement
Divisions: General
Depositing User: Library ICRISAT-InfoSAT
Date Deposited: 05 Mar 2012 13:47
Last Modified: 05 Mar 2012 13:47
URI: http://eprints.icrisat.ac.in/id/eprint/3543

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