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The resistance of new varieties of maize to post-harvest infestation by Sitophilus zeamais Motsch and Sitophilus oryzae (L.)

Published online by Cambridge University Press:  27 March 2009

M. F. Ivbiljaro
M. F. Ivbiljaro
Affiliation:
Department of Agricultural Extension, University of Ibadan, Nigeria
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Summary

The indices of susceptibility of five new varieties of maize: TZE 3 (3·01), TZE 4 (6·69), TZSR (5·58) developed at the International Institute of Tropical Agriculture, Ibadan, and MSRB-W (9·53) and MSC-opaque (5·0) at the National Cereals Research Institute, Ibadan, showed that the yellow variety, TZE 3, is the most resistant to post-harvest infestation by Sitophilus zeamais Motsch and Sitophilus oryzae (L.), the latterbeing the more abundant species.

Emerging F1 generation adults of either species of Sitophilusdeveloped longer, and were more numerous in soaked maize seeds without testa than in unsoaked, intactmaize seeds. Seed germinability declined as the number of holes per maize seed caused by adult insect emergence increased.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 96 , Issue 2 , April 1981 , pp. 479 - 481
Copyright
Copyright © Cambridge University Press 1981

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References

REFERENCES

Dobie, P. (1974). The susceptibility of different types of maize to post-harvest infestation by Sitophilus zeamais and Sitotroga cerealella, and the importance of this factor at the small-scale farm level. Proceedings of the First Working Conference on Stored Product Entomology. Savannah, Georgia, pp. 98–113.Google Scholar
Dobie, P. & Kilminster, A. M. (1978). The susceptibility of triticale to post-harvest infestation by Sitophilus zeamais Motsch, S. oryzae (L.) and S. gra-narious (L.). Journal of Stored Product Research 14, 87–93.CrossRefGoogle Scholar
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