| 释义 |
Definition of Hessian fly in English: Hessian flynoun A gall midge whose larvae are a pest of cereal crops, occurring in all wheat-growing areas. Mayetiola destructor, family Cecidomyiidae Example sentencesExamples - The Hessian fly spread from Long Island in 1777, and a more widespread impact began to be felt in 1778.
- Plant breeders are constantly engaged in a vicious cycle, developing wheats that resist the Hessian fly… for a time.
- Resistance in wheat to the Hessian fly, a major insect pest of wheat, is based on a gene-for-gene interaction.
- Earlier seedings are more subject to root and crown rot and many other diseases and insects, for example wheat streak mosaic and Hessian fly.
- It is resistant to stem rust, leaf rust and soilborne wheat mosaic virus, moderately resistant to wheat streak mosaic virus and susceptible to Hessian fly.
Origin Late 18th century: so named because it was supposed (erroneously) to have been carried to America by Hessian troops during the War of Independence. Definition of Hessian fly in US English: Hessian flynounˈheSHən flī A gall midge whose larvae are a pest of cereal crops, occurring in wheat-growing areas. Mayetiola destructor, family Cecidomyiidae Example sentencesExamples - Earlier seedings are more subject to root and crown rot and many other diseases and insects, for example wheat streak mosaic and Hessian fly.
- It is resistant to stem rust, leaf rust and soilborne wheat mosaic virus, moderately resistant to wheat streak mosaic virus and susceptible to Hessian fly.
- The Hessian fly spread from Long Island in 1777, and a more widespread impact began to be felt in 1778.
- Resistance in wheat to the Hessian fly, a major insect pest of wheat, is based on a gene-for-gene interaction.
- Plant breeders are constantly engaged in a vicious cycle, developing wheats that resist the Hessian fly… for a time.
Origin Late 18th century: so named because it was supposed (erroneously) to have been carried to America by Hessian troops during the War of Independence. |