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| 越冬期荔枝叶片活性氧代谢和渗透调节物质的变化 | |
| 引用本文： | 佘文琴,张延晖. 越冬期荔枝叶片活性氧代谢和渗透调节物质的变化[J]. 热带作物学报, 2009, 30(4): 489-494 |
| 作者姓名： | 佘文琴 张延晖 |
| 作者单位： | 福建农林大学园艺学院,福州,350002 |
| 摘 要： | 以耐寒性较强的荔枝品种元红和耐寒性较弱的兰竹为材料,研究荔枝(Litchi chinensis Sonn.)叶片在越冬期的活性氧代谢及其渗透调节物质(可溶性蛋白质、可溶性糖)含量变化.结果表明: (1)越冬期间,随着温度的降低不同程度地增加了荔枝叶片过氧化氢(H2O2)、丙二醛(MDA)、可溶性蛋白质和可溶性糖的含量,其中,兰竹H2O2和MDA含量增加幅度均大于元红,而可溶性蛋白质、可溶性糖含量的积累则小于元红.(2)越冬期间,荔枝叶片超氧物歧化酶(SOD)、过氧化物酶(POD)活性增强;还原型谷胱甘肽(GSH)含量增加,且到翌年2月18日达最大值而后下降;过氧化氢酶(CAT)活性和兰竹的抗坏血酸(AsA)含量呈下降趋势,而元红的AsA含量先增加后降低.与耐寒性较弱的兰竹相比,元红在越冬期维持较高的活性氧清除能力. |
| 关 键 词： | 荔枝 活性氧代谢 越冬期 |
Metabolism of Leaf Active Oxygen and Change of Leaf Osmoregulatory Substances in Litchi (Litchi chinensis Sonn. ) at Overwintering Stage |
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| She Wenqin and Zhang Yanhui. Metabolism of Leaf Active Oxygen and Change of Leaf Osmoregulatory Substances in Litchi (Litchi chinensis Sonn. ) at Overwintering Stage[J]. Chinese Journal of Tropical Crops, 2009, 30(4): 489-494 | |
| Authors: | She Wenqin and Zhang Yanhui |
| Affiliation: | She Wenqin,Zhang Yanhui College of Horticulture,Fujian Agricultural , Forestry University,Fuzhou,350002 |
| Abstract: | Leaves of two litchi cultivars (Litchi chinensis Sonn.) - Yuanhong and Lanzhu were used to analyze the changes in active oxygen metabolism, soluble protein and soluble sugar, with Yuanhong as the cold -resistant cultivar and Lanzhu as the cold-sensitive cultivar. With a decline in temperature during over -wintering period, the leaf content of H2O2 and MDA rose, and the content of soluble sugar and soluble protein were accumulated in litchi leaves. The increment in H2O2 and MDA was higher in the cold sensiti... |
| Keywords: | litchi active oxygen metabolism over-wintering period. |
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