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原产澳洲的棉属野生种比克氏棉(G.bickii Prokh 2n=26,染色体组符号2G(?)的休眠种子中,种仁上没有腺体,种子萌发后在生长过程中,才在棉株内形成腺体。这个特性如能转育到栽培棉种陆地棉(G.hirsutum L.)上,既可获得无棉毒素棉仁,又不会因棉株无腺体降低抗虫能力,因此具有重大经济意义。但由于陆地棉与比克氏棉亲缘关系很远,转育比克氏棉性状于陆地棉难度很大。我
G.bickii Prokh2n = 26, a dormant seed of the genomic symbol 2G (?) Native to Australia, has no gland on seed kernels, The formation of glands within the cotton plant. If this feature can be transferred to cotton cultivars (G.hirsutum L.), cottonseed toxins can be obtained without the cotton plant glands without reducing insect resistance , So it is of great economic significance.But due to the distant relationship between G. hirsutum and Bicolumn cotton,