甘薯(2n=6x=90)倍性高,染色体数目多,现存资源圃材料均属异质杂合体,亲本筛选较其它作物更为复杂。筛选、创新优良的甘薯优良亲本,有的放矢的组配组合将会加快甘薯育种进程。近几年我们针对其遗传特点、亲本利用方式等研究建立起一套甘薯亲本筛选程序(图1)。这一程序以对亲本的遗传特点分析为中心,育种与亲本筛选相结合,增加了优良亲本筛选的准确性,加快了育种进程。现将筛选程序介绍于后。 Sweet potato (2n = 6x = 90) has high ploidy and many chromosomes. The existing resource nurseries are heterogeneous hybrids, and the screening of parents is more complicated than other crops. Screening, excellent sweet potato innovation excellent parents, targeted combination with the group will speed up the sweet potato breeding process. In recent years, we have set up a screening program of sweet potato parents (Figure 1) based on their genetic characteristics, parental use patterns and other research. This program centers on the analysis of the genetic characteristics of the parents, and breeding and parental screening combine to increase the accuracy of good parental screening and speed up the breeding process. Now screening program introduced in the post.