Dabrowski, Z.T. and Kidiavai, E.L. (1983) Resistance of some sorghum lines to the spotted stalk-borer chilo partellus under western Kenya conditions. Insect Science and its Application, 4 (1-2). pp. 119-126.
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Abstract
Field observations in western Kenya on 100 promising lines of sorghum showed that there were at least 6 relationships affecting plant colonisation and damage by Chilo partellus (Swinh.). Non-preferece for oviposition occurred in 11 lines. Feeding on the young leaves by early larval instars was reduced in 7 lines. Extensive feeding by young larvae in the stems causing dead-hearts was lower in 4 lines than the others. The extent and location of tunnelling by later instars in the stems was low in 3 lines. The tolerance of the plants to larval feeding on the leaves or in the stems occurred in some lines. The effect of a number of cultivars showing different levels and mechanisms of resistance on the behaviour and biology of C. partellus was studied in depth under field conditions.ADDITIONAL ABSTRACT:Data from field observations in Kenya on 100 lines revealed that the following factors were involved in resistance in terms of plant colonization, larval survival and damage: nonpreference for oviposition (in 11 lines), reduced feeding by early instars on young leaves (in seven lines), reduced feeding by young larvae in stems (resulting in a reduction in dead hearts) (in four lines), a low degree of tunnelling by later instars (in three lines), and tolerance of feeding
| Item Type: | Article |
|---|---|
| Author Affiliation: | International Centre of Insect Physiology & Ecology, PO Box 30772, Nairobi, Kenya |
| Subjects: | Plant Protection |
| Divisions: | Sorghum |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 23 Apr 2012 14:42 |
| Last Modified: | 23 Apr 2012 14:42 |
| Official URL: | http://dx.doi.org/10.1017/S1742758400004112 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4880 |
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