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测定2341份我国东北地区大豆品种资源18种氨基酸含量,以谷氨酸最高,平均含量为18.80％;其次是天门冬氨酸为11.43％,限制性氨基酸均在2％以下,胱氨酸>蛋氨酸,其变异系数最大。不同品种分析比较结果:其趋势是蛋氨酸含量最高的品种类型为半栽培大豆,黑色荚;胱氨酸高的为半栽培大豆、黄大豆、亚有限、披针形叶。18种氨基酸含量,不同地区品种间差异均十分显著,并有明显的地区性分布趋势。在南北方向上;天门冬氨酸、谷氨酸、亮氨酸、脯氨酸和精氨酸的分布趋势与蛋白质相同,即中部地区低,南部北部地区高;蛋氮酸、胱氨酸、色氨酸、组氨酸、酪氨酸、丙氨酸、甘氨酸、异亮氨酸、苏氨酸、丝氨酸和赖氨酸与蛋白质分布趋势相反;缬氨酸由北向南增加,苯丙氨酸由北向南减少。在东西方向上,天门冬氨酸、谷氨酸、亮氨酸、丙氨酸和苯丙氨酸分布趋势与蛋白质相同,即东部地区高西部地区低;蛋氨酸、胱氨酸、色氨酸、组氨酸、酪氨酸和缬氨酸与蛋白质分布趋势相反;其他组分,东、西部地区品种间差异不显著。
The content of amino acids in 2341 soybean cultivars in northeastern China was determined, with the highest content of glutamic acid and the average content of 18.80%, followed by aspartic acid of 11.43%, limiting amino acids of 2%, cystine methionine , The coefficient of variation of the largest. Comparison of different varieties of the results: the trend is the highest methionine varieties varieties of semi-cultivated soybean, black pods; cystine for semi-cultivated soybean, yellow soybean, sub-limited, lanceolate leaves. 18 kinds of amino acid content, the differences among different varieties are very significant, and there are obvious regional distribution trends. In the north-south direction, the distribution trend of aspartate, glutamic acid, leucine, proline and arginine is the same as that of the protein, that is, the central region is low and the southern northern region is high; the content of the amino acids, cystine, Tryptophan, histidine, tyrosine, alanine, glycine, isoleucine, threonine, serine and lysine are opposite in protein distribution; valine is increased from north to south and phenylalanine Reduce from north to south. In the east-west direction, aspartic acid, glutamic acid, leucine, alanine and phenylalanine have the same tendency of distribution as that of the protein, that is, the western part of the eastern region is low; methionine, cystine, tryptophan, Histidine, tyrosine and valine showed the opposite trend of protein distribution; the other components did not show significant difference among varieties in the east and west regions.