美国栗树曾经组成从美国缅因州到佐治亚州的东部森林的1/4树冠,为野生动物提供食物,为人类提供木材。圣诞节期间,美国人有露天火烤栗子的习俗。虽然美国栗树基本上已经消失,但科学家已经培育出转基因栗树。火烤的转基因栗子不仅比非转基因栗子的淀粉多一点,油脂重一点,而且质地也有区别。不过,火烤的转基因栗子口味更好。转基因栗树采用了一个小麦基因来抵御 American chestnut tree once formed a canopy of 1/4 of the eastern forest from Maine, Georgia to Georgia, feeding wildlife and providing wood to humans. During Christmas, Americans have the custom of roasting chestnuts in the open air. Although American chestnut trees have largely disappeared, scientists have bred genetically modified chestnut trees. The roasted GM chestnuts not only have a little more starch than the non-GM chestnuts, but have a slightly heavier fat, and the texture is also different. However, the roasted GM chestnuts taste better. Transgenic chestnut trees use a wheat gene to resist