To test the nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all common greenhouse crops. Then the scientists collected samples of air around damaged leaves from each type of crop. These plants had been damaged by insects, or by scientists who made holes in the leaves with a hole punch (打孔器).
The enose, it turns out, could identify healthy cucumber,pepper and tomato plants based on the volatile compounds they produce. It could also identify tomato leaves that had been damaged. But even more impressive, the device could tell which type of damage — by insects or with a hole punch — had been done to the tomato leaves.
With some finetuning,a device like the enose could one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this could also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareva, a biochemist at Purdue University in West Lafayette, Ind. who studies smells of flowers and plants. Hopefully, scientists believe, the device could bring large benefits to greenhouse managers in the near future.
[语篇解读] 植物会说话吗?植物如何“交流”?本文中的科学家们正在尝试用enose来测试植物受到伤害时的反应。
1.We learn from the text that plants communicate with each other by________.
A. making some sounds
【2016高考英语二轮(阅读理解)金品训练(08)及答案】相关文章:
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (31)
★ 2017高考四川省广安市英语阅读理解一轮系列训练:13(含解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (3)
★ 2017届高考英语二轮复习书面表达限时测验:2(含解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (22)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (77)
★ 常熟市2014高考英阅读理解语一轮(暑假)训练题(2)及答案
★ 河南省三门峡市2014高考英语一轮(暑假)基础训练(11)附答案
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (83)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21