relation: http://oar.icrisat.org/2813/
title: Sources and Mechanisms of Resistance to Sorghum Head Bug, Eurystylus-Immaculatus Odh in West-Africa
creator: Sharma, H C
creator: Doumbia, Y O
creator: Haidara, M
creator: Scheuring, J F
creator: Ramaiah, K V
creator: Benenati, N F
subject: Sorghum
description: Sorghum is one of the most important cereal crops in West Africa, and the head bug, Eurystylus immaculatus Odh. (Hemiptera: Miridae) is the key pest of grain sorghum in this region. A range of sorghum genotypes were evaluated for resistance to sorghum head bug at Sotuba (Mali) and Kamboinse (Burkina Faso). Genotypes CSM 388, IS 14332, Malisor 84-7, Sakoika. S 29 and Kamboinse local were resistant to head bugs. both under natural and headcage screening. Head bug resistant genotypes had a lower percentage of head bug damaged grain. The food quality of head bug damaged grain was very poor and unacceptable. Cultivar non-preference was identified as a component of resistance to head bugs. and CSM 388 was nonpreferred compared to E 35-1. Panicle compactness was positively associated with head bug numbers and grain damage. However, genotypes with loose panicles were also susceptible to bugs. Long glumes (>5 mm), days to glume opening (>20 days after anthesis), >50% covering of the grain by the glumes, and grain hardness contribute towards resistance to Eurystylus immaculatus. This information will be useful for developing a programme to breed for resistance to this insect in West Africa.
publisher: International Centre of Insect Physiology and Ecology, Nairobi, Kenya
date: 1994
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/2813/1/JA_1073.pdf
identifier:   Sharma, H C and Doumbia, Y O and Haidara, M and Scheuring, J F and Ramaiah, K V and Benenati, N F  (1994) Sources and Mechanisms of Resistance to Sorghum Head Bug, Eurystylus-Immaculatus Odh in West-Africa.  Insect Science and its Application, 15 (1).  pp. 39-48.  ISSN 0191-9040