First documented case of pest resistance to biotech cotton

User rating: 4.7 / 5 after 15 vote(s)

A bollworm Helicoverpa zea munches down on a cotton flower bud. This pest insect eats all parts of the cotton plant. In some places bollworm have as many as six generations in one growing season. Credit: US Department of Agriculture
A bollworm, Helicoverpa zea, munches down on a cotton flower bud. This pest insect eats all parts of the cotton plant. In some places, bollworm have as many as six generations in one growing season. Credit: US Department of Agriculture

A pest insect known as bollworm is the first to evolve resistance in the field to plants modified to produce an insecticide called Bt, according to a new research report. Bt-resistant populations of bollworm, Helicoverpa zea, were found in more than a dozen crop fields in Mississippi and Arkansas between 2003 and 2006.


Full story »
All News summaries from General Science news
All News summaries for February 07, 2008

Fossil feathers preserve evidence of color

4 hours ago | User rating: not rated yet
The traces of organic material found in fossil feathers are remnants of pigments that once gave birds their color, according to Yale scientists whose paper in Biology Letters opens up the potential ...

Do we think that machines can think?

4 hours ago | User rating: not rated yet
When our PC goes on strike again we tend to curse it as if it was a human. The question of why and under what circumstances we attribute human-like properties to machines and how such processes manifest on a cortical level ...

Superfast muscles in songbirds

5 hours ago | User rating: not rated yet
Certain songbirds can contract their vocal muscles 100 times faster than humans can blink an eye – placing the birds with a handful of animals that have evolved superfast muscles, University of Utah researchers ...

Art of deception: Crystal skulls in British, US museums were fakes

5 hours ago | User rating: not rated yet
How about this for the next instalment of the Indy franchise: "Indiana Jones and the Dodgy Antiques Dealer"?

Milwaukee museum unveils woolly mammoth skeleton

5 hours ago | User rating: not rated yet
(AP) -- A 14,500-year-old woolly mammoth skeleton dug up in 1994 has been unveiled at the Milwaukee Public Museum, giving locals a glimpse of perhaps the most intact specimen discovered in North America.
Goto Archive PhysOrg Forum Goto Archive Video Goto Archive Editorials Goto Archive Free Magazines Goto Archive Newsletter

News Archive