|Title:||天敵的遺傳改良||Other Titles:||Genetic Improvement of Natural Enemies||Authors:||何琦琛
|Keywords:||天敵;遺傳改良;natural enemy;genetic improvement||Issue Date:||Jun-1996||Publisher:||農業試驗所||Related Publication(s):||農業試驗所特刊第57號||Start page/Pages:||181-191||Source:||植物保護新科技研討會專刊||Conference:||植物保護新科技研討會
Proceeding of A Symposium on New Techniques of Plant Protection
The natural enemies often failed to suppress the pest population. This may be enhanced through genetic improvement on the natural enemies. A few works were carried on the breeding of strains of various natural enemies to improve their fecundity, sex ratio, tolerance to various temperatures, and pesticide resistance. Among these works the selection of multipesticide-resistant strain of Metaseiulus occidentalis (Nesbitt) was most prolific. Released into fields, it survived, persisted, and reduced the spider mite population. In addition, genetic transformation was carried successfully on this mite. These works were briefly introduced. Biological control works have been conducted in Taiwan. It is worthwhile to probe the quality of the mass-reared natural enemies, to improve the fecundity to facilitate the mass-production of natural enemy, to breed strains for the release in various crops or seasons. Currently the selection of pesticide- resistant strain is probably most worthwhile. When crops are harvested within a few months after cultivating, genetic improved strain of natural enemy only needs to last out the harvest for using on these crops. The ability of long-term persistence may not be necessary.
|Appears in Collections:||應用動物組|
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