本研究以甘薯为砧木,以绿豆为接穗进行远缘嫁接,获得了薯绿豆新品种.与小灰角绿豆相比,其千粒重提高94.4%;碳水化合物含量增加12.8%; 产量提高14—56%.植株形态、花粉粒形态、淀粉粒形态和染色体数目均有明显变化.研究表明,用不同科间嫁接的方法获得新品种是一个有效的方法. In this study, the sweet potato as the rootstock, the mung bean scion for the distal grafting, access to a new potato mung bean.Compared with the small gray mung bean, its grain weight increased by 94.4%; carbohydrate content increased by 12.8%; output increased by 14-56% Plant morphology, pollen grain morphology, starch grain morphology and chromosome number were significantly changed.Research shows that it is an effective method to obtain new varieties by grafting between different branches.