SNP frequency of Simian3 and Sumianl2 was 0.0027 and SNP frequency of Yumianl and Simian2 was 0.0029 among 4 upland cotton cultivars from Yangtse River.

• 以TM-1序列为对照，5个长江流域推广品种中，泗棉3号和苏棉12SNP频率为0.；0027，渝棉1号和泗棉2号SNP频率为0