对于农民和菜农来说，杂交种子就是死结，因为当你拿到种子之后它们并不会一直繁衍。

For farmers and gardeners, hybrid seeds are a dead end because they do not stay true to type when you take the seeds.

造成这种损失的原因之一就是工业化和它带来的现代的杂交种子。

One reason for this huge loss is the industrialisation of every culture and with it the appearance of modern hybrid seeds.

为父、母本进行正反交, 用杂交种子进行无菌萌发研究和种胚发育观察.

The hybrid seeds were obtained using direct crossing and reciprocal crossing, then germinated in axenic culture.

该活动的一个最初目标就是帮助农民们找到一条培育自己玉米品种的方法，这样他们就不需要每年购买昂贵的杂交种子了。

One early aim has been to help farmers find a way to breed their own corn, so they don't need to buy expensive hybrid seeds each year.

菊花杂交结实率与杂交种子发芽率问题探讨。

An Inquiry into the Lower Fruiting and Germimation Rate of Chrysanthemum cvs.