| 桂西北岩溶地区古树脯氨酸含量的比较分析 |
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| 引用本文： | 覃勇荣,谭 静,刘旭辉,叶美凤,潘振兴.桂西北岩溶地区古树脯氨酸含量的比较分析[J].中国岩溶,2011,30(1):66-71. |
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| 作者姓名： | 覃勇荣 谭 静 刘旭辉 叶美凤 潘振兴 |
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| 作者单位： | 河池学院化学与生命科学系,广西,宣州,546300 |
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| 基金项目： | 广西高校重点实验室(桂教科研[2010]6号)、河池学院科研课题(2007A-N002) |
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| 摘 要： | 岩溶地区具有不同于土山丘陵区的特殊生境,生长在该地区的植物具有不同的生理生态特征。采集不同树龄的樟树、大叶榕、小叶榕、桂花、重阳木、枫香、龙眼等桂西北岩溶地区常见树种的叶片,用磺基水杨酸提取—茚三酮显色法测定叶片中的脯氨酸含量。通过不同样品脯氨酸含量的比较分析,探讨脯氨酸含量与树龄、树木生存状况及其它生态因子的相关性,以便为古树生物学保护提供科学依据。结果表明：不同树种叶片的脯氨酸含量不同,不同树龄的同一树种叶片中的脯氨酸含量有差异。随着树龄的增长,叶片中的脯氨酸含量有波动,且老叶和新叶（嫩叶）的脯氨酸含量变化规律基本一致,通常表现为先升后降。叶片中的脯氨酸含量可以作为古树保护的参考指标。
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| 关 键 词： | 桂西北 岩溶地区 古树 脯氨酸 |
| 收稿时间： | 2010/8/27 0:00:00 |
Comparative analysis on proline content in the leaves of the ancient trees in northwest of Guangxi Karst Area |
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| QIN Yong-rong,TAN Jing,LIU Xu-hui,YE Mei-feng and PAN Zhen-xing.Comparative analysis on proline content in the leaves of the ancient trees in northwest of Guangxi Karst Area[J].Carsologica Sinica,2011,30(1):66-71. |
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| Authors: | QIN Yong-rong TAN Jing LIU Xu-hui YE Mei-feng and PAN Zhen-xing |
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| Institution: | Department of Chemistry and Life Sciences, Hechi University;Department of Chemistry and Life Sciences, Hechi University;Department of Chemistry and Life Sciences, Hechi University;Department of Chemistry and Life Sciences, Hechi University;Department of Chemistry and Life Sciences, Hechi University |
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| Abstract: | The habitats of plants in karst area are different from that in the mountain and hilly land formed in clastic rocks. Special habitat brings up different group of plant. The plants in karst area have different physiological and ecological adaptability features. Different ages of leaves are collected from the common tree species, including C. Camphora, F.virens Ait.var.sublanceolata, F.microcarpa var.pusillifolia, O.fragrans.B.polycarpa, L.formosana and D.longan, which distribute in northwest Guangxi. And then proline content in the leaves is determined by the method of sulfosalicylic acid extraction-ninhydrin coloration. By comparative analysis on the proline content in different leaf-samples, correlation between proline content and tree age, the living conditions of the trees and other ecological factors are studied, so as to provide scientific basis for biological protection of the old trees. The result shows that different tree species have different proline content in their leaves; the same species leaves with different ages had different proline content. With the growth of tree-age, there are some fluctuations in proline content in the leaves. The variation of proline content in the old leaves is similar to the new ones, and the proline content usually increase at first and then decrease. Lastly, it is proposed that proline content in the leaves should be used as the reference index of for tree protection. |
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| Keywords: | Northwest Guangxi karst area old tree praline |
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