In order to clarify the oil, edible value and healthy functions of kernels from new low-gossypol strains, seven new dominant glandless strains and two gossypol cultivars from upland cotton, Sumian 22 and Sikang 1, were selected to determine content of free gossypol, fatty acids, amino acids in kernels, and other characters. The results showed that the gossypol content of the kernels of four new strains were under the national edible standard (200 mg·kg-1). Suxianwu 154 and Suxianwu 156 are new upland cotton lines without gossypol. The rough fat content of kernels from new low-gossypol strains were higher than that from gossypol cultivars, and the total content of unsaturated fatty acids from low gossypol kernels was more than 70%. The relative amounts of linoleic acid, linolenic acid, palm oleic acid, and total unsaturated fatty acids from low gossypol kernels were the same as that from gossypol ones, whereas the relative amounts of oleic acid from low gossypol kernels were slightly lower than that from gossypol ones. Tryptophan content of low gossypol kernels was significantly higher than that of conventional gossypol kernels, and the content of other essential amino acids as well as the total content of amino acids from low gossypol kernels were the same as that from gossypol ones. There were no adverse influences of the glandless gene Gl2e on the composition and content of fatty acids and amino acids in low gossypol kernels.
Keywords
cotton /
dominant low gossypol /
kernel /
fatty acids /
amino acids
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