The peach trees promise a rich crop this year.

今年桃子丰收在望。

The history of the peach as a garden crop in China far antedates any claim that can be substantiated for other geographic areas.

在中国，桃作为一园艺树种，其历史远比任何其它已知的地区都早。

Peach is a kind of the perennial fruit crop. For it's long period of a generation, molecular genetic mapping is very important theoretically and practically in breeding.

桃属于多年生果树植物，由于世代周期长及其高度杂合性，使分子遗传作图不仅在理论上而且在育种实践上有十分重要的意义和价值。