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棉属２９个野生种和４个栽培种４７份材料的种子ＳＯＤ同工酶的凝胶电泳图谱表明：①同一栽培种多数品种的谱带完全一致；②同一染色体组内种间迁移率相同的酶带较多，其中Ｄ染色体组内差异最小，Ｃ染色体组内差异最大。根据研究结果推测：①Ｂ染色体组可能是棉属中最原始的类群，Ａ、Ｅ染色体组由Ｂ染色体组分别进化而来；②雷蒙德氏棉和瑟伯氏棉可能分别为阔叶型和披针叶型异源四倍体棉Ｄ染色体亚组的供体；③Ａ１２０可能属于棉属；④Ａ１１２与奈尔逊氏棉、澳洲棉的亲缘关系较近，与斯托提棉、鲁滨逊氏棉的关系较远。ＳＯＤ酶可以作为研究种间关系和分类的重要方法之一。
The gel electrophoresis patterns of SOD isozymes in 29 wild species and 4 cultivars from cotton plants showed that: ① The bands of most cultivars of the same species were completely identical; ② The same species mobility Enzyme band more, of which the smallest difference within the D chromosome group, C group differences within the largest difference. According to the results of the study, it is speculated that: ①B chromosome group may be the most primitive group in Gossypium; A and E chromosome group evolved respectively from B genome group; ② Raymond cotton and Cerberus may be broadleaf and Larvae of allotetraploid allo-tetraploid cotton D subfamily; ③A120 may belong to Gossypium; ④A112 is closely related to Nelson’s cotton and Australian cotton, and is closely related to Storax, Robinson’s The relationship between cotton farther. SOD enzyme can be used as one of the important methods to study interspecific relationship and classification.