由于研究对象是植物，有人怀疑这是交叉传粉的结果(即便这些植物是自花传粉)。

Because the research was done on plants, some skeptical of the findings thought it came from cross-pollination even though the plants self-pollinate.

同时，康维尔谈到蓝莓不能自花传粉，所以种植者必须保证蓝莓可以交叉传粉的条件。

Colville also determined that blueberries can't self-fertilize, so the grower must make sure the crop can be cross-pollinated.

红莓和黑霉都是自花传粉的，这就是说，它们无需昆虫为它们传粉就能自己供应花粉，形成果实。

Red raspberries and blackberries are self-pollinating, meaning that they can supply their own pollen and form fruit without needing insects to ferry pollen for them.