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以水稻02428×合系35的RILs群体及其亲本糙米和发芽糙米为材料,对糙米、发芽糙米各222个群体样品的γ-氨基丁酸、抗性淀粉含量进行测定,以期选育出高γ-氨基丁酸、高抗性淀粉的水稻新品种。研究结果表明,重组自交系糙米、发芽糙米γ-氨基丁酸含量差异不大,群体间存在广泛变异,由主效基因控制。重组自交系糙米、发芽糙米抗性淀粉含量差异大,发芽糙米抗性淀粉平均含量是该群体糙米的1.2倍,群体间存在广泛变异,呈偏态分布。高海拔冷凉气候有利于糙米高抗性淀粉含量的提升与进化。本研究可以为功能水稻的遗传及品种选育提供一定的理论依据。
The contents of γ-aminobutyric acid and resistant starch in 222 populations of brown rice and germinated brown rice were determined by using RILs population of 02428 × line 35 and its parental brown rice and germinated brown rice as materials to select high γ - Amino butyric acid, high resistant starch new rice varieties. The results showed that the contents of γ-aminobutyric acid in brown rice and germinated brown rice of recombinant inbred lines were not significantly different, with wide variation among populations and controlled by major gene. Resistant inbred lines of brown rice, germinated brown rice resistant starch content of large, germinated brown rice resistant starch average content of brown rice is 1.2 times the population, there is a wide range of variation among populations, were skewed distribution. High altitude and cool climate are conducive to the promotion and evolution of high resistant starch content in brown rice. This study can provide some theoretical basis for the inheritance and breed breeding of functional rice.