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本文研究了四倍体栽培种海岛棉与二倍体野生种澳洲棉、四倍体野生种黄褐棉种间杂种Ｆ１的主要形态特征及Ｆ１花粉母细胞减数分裂中期Ⅰ的粱色体行为。结果，（海岛棉４１６×澳洲棉）Ｆ１有的性状趋向澳洲棉，如茎、叶的茸毛、花冠颜色、花的开放形式；有的象海岛棉，如叶形、叶色、花药和花粉之颜色；有的则为中间型，如苞叶形状、铃形等。（海岛棉７１２４×黄褐棉）Ｆ１趋向父本黄褐棉的性状有：腺体较多，茎秆、叶片暗绿色，有茸毛，叶片掌状。短日照性强；表现中间型的性状有：花瓣黄色，有红心。两个组合Ｆ１的花粉母细胞减数分裂中期Ⅰ的配对构型分别为３１．４Ⅰ＋３．９０Ⅱ＋０．０２Ⅲ＋０．０２Ⅳ和０．２４Ⅰ＋２５．７１Ⅱ＋０．０９８ｔⅠ″＋０．０３９Ⅳ，这一结果表明，海岛棉与澳洲棉的亲缘关系较远，与黄褐棉的亲缘关系较近，但海岛棉与黄褐棉的染色体间已有所分化，可能存在染色体结构上的差异。
In this paper, the main morphological characteristics of F1 hybrid between interspecific hybrids of interspecific hybrids of interspecific and interspecific hybrids between interspecific and diploid wild species Australian cotton and tetraploid wild brown cotton and the sorghum behavior of metaphase Ⅰ of F1 pollen mother cells . As a result, the F1 traits that tend to be present in Australian cotton, such as stems, leaf hairs, corolla color, and open forms of flowers; some are like sea-island cottons such as leaf-shaped, leaf color, anther and pollen Color; while others are intermediate, such as husk shape, bell-shaped and so on. (Island cotton 7124 × yellow brown cotton) F1 trends to the male yellow brown cotton traits are: more glands, stalks, dark green leaves, hairy, palmate leaves. Short sunshine strong; the performance of intermediate traits are: petal yellow, red heart. The pairing configuration of metaphase I of pollen mother cells in the two combinations F1 were 31.4Ⅰ + 3.90Ⅱ + 0.02Ⅲ + 0.02Ⅳ and 0.24Ⅰ + 25.71Ⅱ + 0.098tⅠ + 0.039Ⅳ, respectively. The results showed that the island cotton and Australia Cotton is more distantly related and has a closer genetic relationship with kelp, but the chromosomes of kelp and kayan have been differentiated and may have structural differences.