widstrom造句

• Meanwhile, the maysin remains locked in the silk and never reaches the corn, Widstrom said.
• A couple of bites of maysin are enough to stop the caterpillar's development, Widstrom explained.
• The new variety, developed at the Crop Genetics and Breeding Research Unit in Tifton, Ga ., contains elevated levels of a natural corn substance that blocks the growth of damaging caterpillars, said geneticist Neil W . Widstrom.
• Widstrom pointed out that the genetically modified corn has the " Bt " gene in all of its tissues _ leaves, stalk, silk, etc . _ and therefore is effective against a wide variety of caterpillars.
• Widstrom used laboratory analyses of corn silk to identify plants with elevated levels of maysin, then cross-pollinated those strains so that in successive generations the concentration of maysin grew to a point seven to 10 times the amount needed to prevent development of the worms.