Resistance of Wild Rices, Oryza spp., to the Whorl Maggot Hydrellia philippina Ferino (Diptera: Ephydridae)
- 1 August 1985
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 14 (4) , 404-407
- https://doi.org/10.1093/ee/14.4.404
Abstract
Lack of varieties resistant to the rice whorl maggot Hydrellia philippina in cultivated rice, Oryza sativa, for use as donors in the breeding program, prompted the field screening of the International Rice Research Institute collection of wild rices. Of 307 accessions screened, 45, from 11 species, were selected as resistant. The species were: O. alta, O. australiensis, O. brachyantha, O. grandiglumis, O. latifolia, O. minuta, O. nivara, O. officinalis, O. perennis, O. punctata, and O. ridleyi. Greenhouse studies indicated that resistance was due to nonpreference for oviposition and to low larval survival. Wild rices have been crossed with O. sativa in the insect resistance breeding program using embryo culture techniques.Keywords
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