Seeds of ginkgo is used as a dryfood and is full of nutrition . its juvenile period is too long and seedling will flower after more than ten years . long juvenile period severely restricts the progress of its breeding and reduces its economic value 银杏果实营养丰富，味道鲜美，遗憾的是银杏的童期很长，被称为公孙树，实生树的开花需要十几年，严重制约着银杏品种改良和经济利用。
