陆地棉(Gossypium hirsutum L.),海岛棉(Gossypium barbadenes)、中棉(Gossypium ar-boreum L.)三大栽培棉种对棉花主要病害——枯萎病、黄萎病、苗病(炭疽病、红腐病、立枯病等复合症)具有不同的抗病性。随着我国棉花抗病育种目标由单抗一种病害,向抗两种或两种以上病害发展的今天,以往对某—病害抗性研究结果,已远不能满足多抗育种的需要,因此研究三大棉 Gossypium hirsutum L., Gossypium barbadenes and Gossypium ar-boreum L. The main cotton diseases, Fusarium wilt, Verticillium wilt, Red rot, blight and other syndromes) have different disease resistance. As the target of cotton breeding in our country is composed of a single disease resistance and two or more disease resistance development, the results of past disease resistance research far can not meet the needs of multi-resistant breeding. Therefore, Three big cotton