Evaluation of several grain sorghum characteristics for resistance to the banks grass mite

Perring, T.M. and Archer, T.L. and Johnson, J.W. and Phillips, J.W. (1982) Evaluation of several grain sorghum characteristics for resistance to the banks grass mite. Journal of Economic Entomology,, 75 (2). pp. 257-260.

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Abstract

Five grain sorghum, Sorghum bicolor (L.) Moench, characteristics were evaluated to determine their effectiveness for resistance to Oligonychus pratensis (Banks). Characteristics tested were leaf tannin, maturity, senescence, leaf "bloom," and midrib juiciness. Field evaluation indicated no resistance attributable to leaf tannin, leaf "bloom," or midrib juiciness. Similar mite numbers occurred on early-and late-maturing lines, but mite damage was lower on later-maturing lines, suggesting tolerance to mite feeding. In the senescence comparison, higher mite numbers and damage occurred on senescing than on nonsenescing plants. These data indicate that leaf stress associated with reproductive physiology may be a key factor leading to spider mite outbreaks and should be of primary consideration in the development of mite-resistant varieties

Item Type: Article
Author Affiliation: Texas A & M University Research and extension center
Subjects: Crop Improvement
Divisions: Sorghum
Depositing User: Mr B Krishnamurthy
Date Deposited: 03 May 2012 14:14
Last Modified: 03 May 2012 14:14
Official URL: http://www.ingentaconnect.com/content/esa/jee/1982...
URI: http://eprints.icrisat.ac.in/id/eprint/5073

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