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本研究以棉属(Gossypium)的栽培种草棉(C.herbaceum L.)、亚洲棉(G.arboFeumL.)、陆地棉(G.hirsutum L.)和海岛棉(G.barbodense L.)为材料,通过种间杂交产生二元、三元和四元杂种F_1,首先进行同染色体组内的种间杂交,然后用0.2％秋水仙碱溶液处理(亚洲棉×草棉)F_1获得双二倍体,并进一步以该双二倍体与陆地棉或(陆地棉×海岛棉)F_1进行正反交,产生三元杂种F_1和四元杂种F_1。形态学研究表明,各二元、三元和四元杂种的F_1均生长旺盛,两个二元杂种F_1的叶片和花器或表现为明确的显隐性关系或超过双亲的平均值(如叶片的长度和宽度)。三元和四元杂种F_1在叶形和花器形态上表现了三个和四个棉种的一些性状。这表明把几个栽培棉种的某些性状组合于同一杂种是可能的。
In this study, we used C.herbaceum L., G.arboFeumL., G. hirsutum L.and G.barbodense L.were Material, a binary, ternary and quaternary hybrid F_1 was generated by interspecific hybridization. First, interspecific hybridization was performed in the same chromosomal group, and then doubled with F_1 cottonseed cotton (0.2% colchicine solution) And further crossed back and forth with the diploid diploid and F_1 of Upland cotton or (Upland cotton × sea island cotton) F_1 to produce the ternary hybrid F1 and the quaternary hybrid F1. Morphological studies showed that the F_1s of all binary, ternary and quaternary hybrids grew vigorously. The leaf and floral organs of two binary hybrid F_1s either showed a clear recessive relationship or exceeded the average value of their parents Length and width). Three-and four-hybrid F_1 exhibited some traits of three and four cotton species in leaf and flower morphology. This suggests that it is possible to combine certain traits of several cultivated cotton species in the same hybrid.