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以几个抗衰老特性不同的北方粳稻品种及其正反交F1为材料,以抗衰超级稻品种辽星1号为对照,对其生育后期形态指标和衰老过程中剑叶生理特性的变化进行了比较研究。结果表明:抗衰老特性不同的材料在形态指标上差异明显;衰老过程中,剑叶叶绿素含量、光合速率和超氧化物岐化酶(SOD)活性在齐穗后10～20d达到峰值后持续下降,过氧化氢酶(CAT)活性在齐穗后持续下降,丙二醛(MDA)含量在齐穗后持续增加。因齐穗后30～40d的SOD活性在不同材料间的差异最明显,故可用来评价粳稻的抗衰老特性。衰老过程中杂种F1形态指标和生理指标值均居双亲值之间,且偏向其母本,说明杂种F1的抗衰老特性受父母本共同影响,且受母本影响更大。
Several japonica rice varieties with different anti-aging characteristics and their reciprocal reciprocal cross F1 were used as materials to compare their morphological characteristics and the physiological characteristics of the flag leaf at the later growth stage under the control of Liaoxing 1, A comparative study. The results showed that the morphological indexes of the materials with different anti-aging properties were significantly different. During the aging process, the chlorophyll content, photosynthetic rate and superoxide dismutase (SOD) activity of flag leaves continued to decline after 10 ~ 20 days after heading , Catalase (CAT) activity continued to decrease after heading, and the content of malondialdehyde (MDA) continued to increase after heading. The SOD activity in the 30-40 days after heading was the most obvious among different materials, so it could be used to evaluate the anti-aging characteristics of japonica rice. The morphological and physiological indexes of F1 hybrids in the process of senescence were both between parents and biased towards their parents, indicating that the anti-aging characteristics of F1 hybrids were influenced by both parents and affected more by maternal parents.