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对２２０个国内外不同来源的陆地棉无色素腺体品种（系）种子粗蛋白、可溶性蛋白和棉酚含量的研究表明，三个性状的总体平均值分别为４１．４６％、１１．８２％和０．０１７４％。该遗传资源群体具有蛋白质含量较高但变异程度较小、绝大多数品种棉酚含量符合国际卫生标准（＜０．０４％）且变异程度很大的特点，４０％的品种其粗蛋白含量在４２％以上，棉酚含量在０．０４％和０．０２％以下的品种分别占９１．８７％和７５．４５％。国内育成品种的粗蛋白含量显著高于国外引进品种，春播品种显著高于夏播品种；而可溶性蛋白和棉酚含量在这些品种类和相互之间无显著差异。中无１０９８、浙棉９号、冀棉１９号、绵阳４１７６等１６个品种被鉴定筛选为粗蛋白含量较高（＞４５％）的种质材料。
Studies on the content of crude protein, soluble protein and gossypol in 220 non-pigment gland cultivars (lines) from different origins in China and abroad showed that the average values of the three traits were 41.46% and 11.82% And 0.0174%. The population of genetic resources with high protein content but less degree of variation, the vast majority of varieties gossypol content in line with international health standards (<0.04%) and a great degree of variation, 40% of the varieties of crude protein content in More than 42%, gossypol content of 0.04% and 0.02% of the following varieties accounted for 91.87% and 75.45%. The crude protein content of bred varieties in China was significantly higher than that of imported varieties. The sowing varieties in spring sowing were significantly higher than those in sowing sowing varieties. The contents of soluble protein and gossypol in these varieties were not significantly different from each other. Sixteen cultivars of Zhongbian 1098, Zhemian 9, Jimian 19 and Mianyang 4176 were identified as germplasm with high crude protein content (> 45%).