美国农业研究局最近成功培育成一系列抗根瘤线虫玉米新品种。这些新品种玉米不但可使在其根部产卵并进行孵化的多数线虫很快死亡,并且能延长幼虫发育为成虫的时间和减少危害作物的成虫数量,从而达到抵抗线虫的目的。 这种玉米新品种主要可抵御危害作物的黄麻根瘤线虫和沙生根节线虫。这两种线虫可以出现在同一块农田,特别是沙质土壤农田里。它们的幼虫钻进玉米植株的根部吸取营养,长为成虫后交配并产下数百个虫卵,导致玉米的根部出 The American Bureau of Agricultural Research has recently succeeded in developing a series of new corn varieties resistant to root nodules. These new varieties of corn not only allow most nematodes that spawn and hatch at their roots to die quickly, but also extend their larvae’s development into adults and reduce the number of adults that endanger the crop, thus achieving resistance to nematodes. This new maize variety is primarily resistant to root-knot nematodes and root-knot nematodes. Both nematodes can appear on the same farmland, especially in sandy soil fields. Their larvae dig into the roots of corn plants for nourishment, mashing into adults and producing hundreds of eggs, resulting in the emergence of corn roots