天竺葵有助于控制日本金龟子的破坏性

时间：2010-03-09 01:36:33

（单词翻译:单击）

Geraniums（天竺葵） may hold the key to controlling the devastating1 Japanese beetle2（日本金龟子） , which feeds on nearly 300 plant species and costs the ornamental3 plant（观赏植物） industry $450 million in damage each year, according to scientists with the Agricultural Research Service (ARS农业研究局). The beetle, Popillia japonica Newman, can feast on a wide variety of plants, including ornamentals4, soybean（大豆，黄豆） , maize5（玉米） , fruits and vegetables. But within 30 minutes of consuming geranium petals6（花瓣，翼瓣） , the beetle rolls over on its back, its legs and antennae7（触须，天线） slowly twitch8（抽搐，痉挛） , and it remains9 paralyzed（瘫痪的，麻痹的） for several hours. The beetles10 typically recover within 24 hours when paralyzed under laboratory conditions, but they often succumb11 to（屈服于） death under field conditions after predators12（捕食者） spot and devour13（毁灭，吞食） the beetles while they are helpless.

ARS entomologist（昆虫学者） Chris Ranger14 at the agency's Application Technology Research Unit in Wooster, Ohio, is working on developing a way to use geraniums to control the beetles.

Ohio and neighboring Michigan are some of the largest producers of horticultural（园艺的） plants, most of them grown in greenhouses. Other research to benefit the horticultural industry includes that of Susan Stieve, curator（馆长，管理者） of Ohio State University's Ornamental Plant Germplasm Center in Columbus, Ohio.

Stieve is working with OSU collaborators and horticulturist（园艺家） Jonathan Frantz of the ARS Greenhouse Production Research Group in Toledo, Ohio, to see whether a specialized15 breed of begonias（秋海棠） can tolerate colder temperatures.

The scientists are screening the begonias at two production temperatures: 5 degrees Fahrenheit16 colder than normal, and 10 degrees F colder than normal. Begonias are found naturally in a wide variety of climates and altitudes—ecological clues that can be used to identify promising17 germplasm（生殖质） . Being able to grow begonias at cooler temperatures could reduce greenhouse heating bills for ornamental growers in northern climates.


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1 devastating muOzlG     
adj.毁灭性的，令人震惊的，强有力的
参考例句：
  • It is the most devastating storm in 20 years.这是20年来破坏性最大的风暴。
  • Affairs do have a devastating effect on marriages.婚外情确实会对婚姻造成毁灭性的影响。
2 beetle QudzV     
n.甲虫，近视眼的人
参考例句：
  • A firefly is a type of beetle.萤火虫是一种甲虫。
  • He saw a shiny green beetle on a leaf.我看见树叶上有一只闪闪发光的绿色甲虫。
3 ornamental B43zn     
adj.装饰的；作装饰用的；n.装饰品；观赏植物
参考例句：
  • The stream was dammed up to form ornamental lakes.溪流用水坝拦挡起来,形成了装饰性的湖泊。
  • The ornamental ironwork lends a touch of elegance to the house.铁艺饰件为房子略添雅致。
4 ornamentals 4f7f9ba64ff7d24471fce4652e7c0272     
装饰的，装饰用的( ornamental的名词复数 )
参考例句：
  • Many of Polygonaceae are noxious weeds, some ornamentals, and buckwheat (Fagopyrum) and rhubarb (Rheum) foodstuffs. 少数可食，如荞麦和大黄；有一些是观赏植物。
  • Numerous plant species, often crop plants or ornamentals, have been transported throughout the world by humans. 许多植物物种，一般是农用作物或观赏植物，被人们传输到世界各地。
5 maize q2Wyb     
n.玉米
参考例句：
  • There's a field planted with maize behind the house.房子后面有一块玉米地。
  • We can grow sorghum or maize on this plot.这块地可以种高粱或玉米。
6 petals f346ae24f5b5778ae3e2317a33cd8d9b     
n.花瓣( petal的名词复数 )
参考例句：
  • white petals tinged with blue 略带蓝色的白花瓣
  • The petals of many flowers expand in the sunshine. 许多花瓣在阳光下开放。 来自《现代英汉综合大词典》
7 antennae lMdyk     
n.天线；触角
参考例句：
  • Sometimes a creature uses a pair of antennae to swim.有时某些动物使用其一对触须来游泳。
  • Cuba's government said that Cubans found watching American television on clandestine antennae would face three years in jail.古巴政府说那些用秘密天线收看美国电视的古巴人将面临三年监禁。
8 twitch jK3ze     
v.急拉，抽动，痉挛，抽搐；n.扯，阵痛，痉挛
参考例句：
  • The smell made my dog's nose twitch.那股气味使我的狗的鼻子抽动着。
  • I felt a twitch at my sleeve.我觉得有人扯了一下我的袖子。
9 remains 1kMzTy     
n.剩余物，残留物；遗体，遗迹
参考例句：
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
10 beetles e572d93f9d42d4fe5aa8171c39c86a16     
n.甲虫( beetle的名词复数 )
参考例句：
  • Beetles bury pellets of dung and lay their eggs within them. 甲壳虫把粪粒埋起来，然后在里面产卵。 来自《简明英汉词典》
  • This kind of beetles have hard shell. 这类甲虫有坚硬的外壳。 来自《现代汉英综合大词典》
11 succumb CHLzp     
v.屈服，屈从；死
参考例句：
  • They will never succumb to the enemies.他们决不向敌人屈服。
  • Will business leaders succumb to these ideas?商业领袖们会被这些观点折服吗？
12 predators 48b965855934a5395e409c1112d94f63     
n.食肉动物( predator的名词复数 )；奴役他人者（尤指在财务或性关系方面）
参考例句：
  • birds and their earthbound predators 鸟和地面上捕食它们的动物
  • The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》
13 devour hlezt     
v.吞没；贪婪地注视或谛听，贪读；使着迷
参考例句：
  • Larger fish devour the smaller ones.大鱼吃小鱼。
  • Beauty is but a flower which wrinkle will devour.美只不过是一朵，终会被皱纹所吞噬。
14 ranger RTvxb     
n.国家公园管理员，护林员；骑兵巡逻队员
参考例句：
  • He was the head ranger of the national park.他曾是国家公园的首席看守员。
  • He loved working as a ranger.他喜欢做护林人。
15 specialized Chuzwe     
adj.专门的，专业化的
参考例句：
  • There are many specialized agencies in the United Nations.联合国有许多专门机构。
  • These tools are very specialized.这些是专用工具。
16 Fahrenheit hlhx9     
n./adj.华氏温度；华氏温度计(的)
参考例句：
  • He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
  • The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
17 promising BkQzsk     
adj.有希望的，有前途的
参考例句：
  • The results of the experiments are very promising.实验的结果充满了希望。
  • We're trying to bring along one or two promising young swimmers.我们正设法培养出一两名有前途的年轻游泳选手。

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