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测定了61个陆地棉品种的种籽品质。粗蛋白和粗脂肪之间为极显著负相关(r=-0.8921)。粗脂肪平均含量为34.777%,亚油酸平均含量为53.84%,二者之间为正相关,但不显著。粗蛋白、赖氨酸平均含量分别为40.308% 2.3687%,二者之间为极显著正相关(r=0.3477)。61个陆地棉品种中,赖氨酸及亚油酸含量均较高的品种有19个,其中邢台6871、中_7、皖_(73-10),为中熟丰产品种;辽棉3号为早熟品种;SP_(23)、岱_(55)、布隆迪棉、岱_(61)、岱_(41)等,均可作为棉籽品质改良的亲本材料。棉籽仁是优质植物油脂及高蛋白食品和饲料的来源。它的不饱和脂肪酸占70%以上,亚油酸占50%以上;棉仁粉蛋白质含量高达50%以上。
The seed quality of 61 Upland cotton cultivars was determined. There was a significant negative correlation between crude protein and crude fat (r = -0.8921). The average content of crude fat was 34.777% and the average content of linoleic acid was 53.84%. There was a positive correlation between them, but not significant. The average contents of crude protein and lysine were 40.308% and 2.3687%, respectively. There was a significant positive correlation between them (r = 0.3477). Among 61 cotton cultivars, 19 cultivars with higher contents of lysine and linoleic acid were Xingtai 6871, Zhong7 and Wanxi (73-10) (23), Dai_ (55), Burundi cotton, Dai_ (61), Dai_ (41), etc., can be used as the parent material to improve the quality of cottonseed. Cottonseed kernels are a source of premium vegetable oils and high-protein foods and feeds. Its unsaturated fatty acids accounted for more than 70%, linoleic acid accounted for more than 50%; cotton kernel meal protein content as high as 50%.