普通小麦镉吸收基因Cdu1组成的功能标记检测

admium is a toxic metals, developing new varieties with low cadmium absorption was very important. One co-dominant functional molecular marker, usw47 was used in this study to identify the composition of the cadmium uptake gene (Cdu1) in 86 wheat cultivars (lines). Results showed fifty-nine materials had 375bp bands as the low cadmium absorption type, account for 68.60%; while 27 materials had 225bp bands as the higher cadmium absorption type, accounts for 31.40%. About 74.47% derivatives of wheat cultivar Xiaoyan 6 had the same gene compositions with Xiaoyan 6 at Cdu1 locus, while about 25.53% derivatives had the high-Cd alleles. Most newly developed cultivars in Shandong provinces had the low-Cd alleles, while 33.33% cultivars had the high-Cd alleles.