| 水分胁迫下华山松抗腐烂病的研究 |
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| 引用本文： | 陈玉惠 谢开立 等. 水分胁迫下华山松抗腐烂病的研究[J]. 四川林业科技, 2001, 22(3): 1-5 |
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| 作者姓名： | 陈玉惠 谢开立 等 |
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| 作者单位： | [1]西南林学院基础部，云南昆明650224 [2]西南林学院资源学院，云南昆明650224 |
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| 基金项目： | 大面积人工纯林病虫害发生发展规律及综合治理研究,云南省重点基金项目. |
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| 摘 要： | 用不同浓度的聚乙二醇（PEG6000）对华山松幼苗进行诱导水分胁迫，树皮的相对膨胀度（RT值）随PEG浓度的增大而下降；且树皮内的酚类物质含量、多酚氧酶（PPO）活性和苯丙氨酸解氨酶（PAL）活性均有所降低，过氧化物酶（POD）活性升高。说明水分状况直接影响着华山松的抗病性。4种酚类物质抑菌试验表明，一定浓度下酚类物质对腐烂病病原菌松黑腐皮壳（Valsa pirni Fr.)菌丝体生长有抑制作用，以香草醛和邻苯二酚抑菌能力最强。
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| 关 键 词： | 水分胁迫 相对膨胀度 酚类物质 抗病能力 华山松 抗腐烂病 |
| 文章编号： | 1003-5508(2001)03-0001-05 |
| 修稿时间： | 2001-06-10 |
A Study of the Resistance of Pinus armandii under Water Stress to Rot Disease |
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| CHEN Yu hui DI Zhi jun HU Hai yan. A Study of the Resistance of Pinus armandii under Water Stress to Rot Disease[J]. Journal of Sichuan Forestry Science and Technology, 2001, 22(3): 1-5 |
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| Authors: | CHEN Yu hui DI Zhi jun HU Hai yan |
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| Abstract: | The seedlings of Pinus armandii were treated with different concentration of polyethylene glycol 6000(PEG 6000).The relative turgidity(RT)and phenols content,phenylalanine ammonialyase(PAL),polyphenol oxidase(PPO)and peroxidase(POD)activities of tree barks were tested under water stress.The results showed that RT decreased with the increase of PEG concentration.Phenols content,the activities of PAL and PPO were positively correlated with RT,but negative correlation was found between POD activity and RT.The armandii pine's water condition affects directly the resistance to disease( Valsa pini Fr.) The results of phenols inhibiting Valsa pini growth were also reported.In four kinds of phenols,vanillin and pyrocatechol reduced the pathogen growth most obviously. |
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| Keywords: | Water stress Relative turgidity Phenols resistance to disease Pinus armandii |
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