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小麦籽粒发育初期总氨基酸含量逐渐增加,12～16d达到最大,随后降低,24d以后又缓慢增加至成熟;在整个过程中缬氨酸、赖氨酸、异亮氨酸、天冬氨酸的相对含量逐渐降低,而谷氨酸、脯氨酸、组氨酸和苯丙氨酸不断增加;籽粒发育初期游离氨基酸不断增加,12d含量最大,然后快速下降,到24d减慢,32d又快速下降,成熟的种子仅含0.04％,籽粒发育初期(开花后4～12d)游离大冬氨酸、丝氨酸、谷氨酸、内氨酸和脯氨酸含量较高,品种间氨基酸有一定差异。
The content of total amino acids in the early stage of wheat grain development increased gradually, reaching the maximum at 12 ~ 16d, then decreased and then slowly increased to maturity after 24d. During the whole process, the relative contents of valine, lysine, isoleucine and aspartic acid While the contents of glutamic acid, proline, histidine and phenylalanine increased continuously. The free amino acids increased at the beginning of grain development, and reached the maximum at 12th day, then decreased rapidly, and then decreased to 24th day and rapidly decreased again on the 32th day. The mature seeds only contained 0.04%, the free aspartic acid, serine, glutamic acid, arginine and proline were higher in the early stage of seed development (4 ~ 12 days after flowering), and there were some differences among the cultivars.