鲜食甜糯玉米子粒氨基酸含量的研究

Studies on the Amino Acid Content of Sweet-waxy Maize Kernels for Fresh Food

以异隐纯合体杂交法培育的9个甜糯玉米杂交组合及其15个隐性纯合体亲本自交系为材料,在适宜鲜食期测定子粒中的氨基酸含量。结果表明,TN43-4的赖氨酸、必需氨基酸总量和氨基酸总量最高。不同甜糯玉米组合间的必需氨基酸总量和氨基酸总量存在一定的差异,但其必需氨基酸的相对含量并没有大的差别。多数甜糯玉米组合的必需氨基酸总量和氨基酸总量介于双亲之间或高于双亲。秋种、春种两次试验氨基酸含量的测定结果不同,春种试验的氨基酸含量普遍高于秋种试验,表明存在环境的影响。7种必需氨基酸间的简单相关和偏相关分析表明,苏氨酸与缬氨酸、异亮氨酸,亮氨酸与苯丙氨酸、异亮氨酸间存在真实的相关关系。

Fifteen parents of recessive homozygote maize inbred lines and their 9 sweet-waxy maize hybridized combinations combined by using the cross between allotypic recessive homozygotes were used. The amino acid content in the kernels was measured in the fresh day. The results revealed that the lys content, the total essential amino acid and total amino acid contents of TN43-4 were the highest. There were mostly differences for the total essential amino acid and total amino acid contents among different sweet-waxy maize hybridized combinations. But there were not differences for the relative contents of total essential amino acid of the sweet-waxy maize hybridized combinations. The total essential amino acid and total amino acid contents of the sweet-waxy maize hybridized combinations were mostly higher than their parents or placed in the middle of the parents. There were difference between autumn sowing and spring sowing for the amino acid contents of sweet-waxy maize hybridized combinations and their parents. The amino acid content of spring sowing was generally higher than that of autumn sowing. It showed that there was the influence of environment. The simple correlation and partial correlation analysis of 7 kinds of essential amino acids showed that there were the positively significant or higher significant correlations between thr and val, thr and ile, leu and phe, leu and ile.