在棉花研究工作中,有几种原始材料需加保存。(1)一些生长在田间的优异材料,尚需继续研究,或想利用冬季让其多结些种子;(2)在田间发现的新遗传变体;(3)通过种子遗传性很可能发生变化或性状难于通过种子传递的材料(如棉花单体的传递率很低,需要利用显微技术检定)。虽然现今的棉花栽培品种仍保留其祖先的多年 In cotton research, there are several raw materials to be preserved. (1) some excellent materials that grow in the field need to be further studied or want to use winter to make more seeds; (2) new genetic variants found in the field; (3) genetic variation is likely to occur through the seed Or materials with poor trait transmission through seeds (eg, low transmissibility of cotton monomer, which requires microscopic examination). Although today’s cotton cultivars still retain their ancestors for many years