A headcage technique to screen sorghum for resistance to mirid head bug, Eurystylus immaculatus Odh. in West Africa

Sharma, H C and Doumbia, Y O and Diorisso, N Y (1992) A headcage technique to screen sorghum for resistance to mirid head bug, Eurystylus immaculatus Odh. in West Africa. Insect Science and its Application, 13 (3). pp. 417-427. ISSN 0191-9040

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A headcage technique to screen for resistance to sorghum head bug, Eurystylus immaculatus Odh.(Hemiptera:Miridae) was standardized for use in West Africa. Panicles infested at the half-anthesis to complete-anthesis stage had greater population build-up and suffered maximum grain damage, loss in grain mass, grain hardness and seed germination. Panicles with higher grain damage also showed greater severity of grain mould incidence. Maximum population build-up and grain damage were recorded in panicles infested with 20 pairs of adults. Panicles infested with 30-40 pairs of bugs generally showed a decrease in population build-up, possibly because of crowding. Head bug numbers decreased with a decrease in panicle size, while the extent of grain damage increased

Item Type: Article
Uncontrolled Keywords: Head bug, Eurystylus immaculatus, sorghum. resistance screening, no-choice, headcage
Subjects: Mandate crops > Sorghum
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 07 Oct 2011 08:31
Last Modified: 07 Oct 2011 08:31
URI: http://oar.icrisat.org/id/eprint/2059
Official URL:
Acknowledgement: We thank Drs J. F. Scheuring, S. V. R. Shetty, N. F. Beninati, C. M. Pattanayak, K. V. Ramaiah and D.S. Murty for their help in carrying out these studies. We ~so thank Dr J. S. Kanwar, Mr R. W. Gibbons, Dr J. M. J. de Wet and Dr Kanayo F. Nwanze for the encouragemen~ and financial help to conduct these trials; Mr I. Tereta, Mrs M. Haidra and Mr Lassine Dembele for their help in conducting these experiments; Mrs V. F. Lopez for her help in statistical analysis; and Mr I. Krishna· Murthy for typing the manuscript
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