Malus coronaria is also called sweet crabapple.

蔷薇苹果属也被称为甘棠。

It belongs to the rose family.

苹果树属于“蔷薇”。

Van Nocker wants to identify the genes responsible for the coronaria's delayed blooms.

范·诺克想要找导致蔷薇苹果属晚开花的基因。

They will test them to make sure they are fully Malus coronaria and not a hybrid variety.

他它进行检测，以确保它完全是蔷薇苹果属品种，而不是杂交品种。

The late blooming tree is a native Michigan apple tree known by the scientific name Malus coronaria.

这种晚熟的树是一种土生土长的密歇根苹果树，名叫做蔷薇苹果属植物。

If a Malus coronaria is crossbred with a commercial apple tree to make a new hybrid, it would take four or five years for that tree to start producing apples.

如果蔷薇苹果属与商业性苹果杂交以培育新的杂交种，那新的杂交种需要四五年的时间才能开始结苹果。