它们是农学院培育出的改良品种。
其中16个为农家品种，12个为改良品种。
These varieties consisted of 16 land RACES and 12 im proved varieties.
村民组织正在努力增加这种改良品种的供应。
Organizations of village farmers are working to expand the supplies of the improved seeds.
对动物的饲养或植物的种植，尤指为了产生改良品种。
The breeding of animals or growing of plants, especially to produce improved stock.
科学家们希望借助各种新技术来进一步提高农作物产量，如本周发布的小麦基因组，就有助于庄稼种植者培育改良品种。
Scientists hope to boost yields even further through discoveries, such as this week's publication of the wheat genome, which would help crop breeders to develop improved varieties.
2007年，乌干达成为使用鲁汶改良品种的第一块试验田，尽管舆论对于转基因食品的一系列顾虑很可能阻止它长久的成功。
In 2007, Ugandan field trials of the first Leuven uber-banana were announced, although public distaste of the idea of GM foods may impede its long term success.
卡夫公司称它正要发布一种减少了37%钠的改良品种，但是当它试图再减去另外的3%时，试吃者给它的滋味、口感和香味打了不及格。
Kraft said it was releasing a version with 37 percent less sodium, but when it tried to eliminate an additional 3 percent, consumer testers failed it on flavor, texture and aroma.
卡夫公司称它正要发布一种减少了37%钠的改良品种，但是当它试图再减去另外的3%时，试吃者给它的滋味、口感和香味打了不及格。
Kraft said it was releasing a version with 37 percent less sodium, but when it tried to eliminate an additional 3 percent, consumer testers failed it on flavor, texture and aroma.
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