几种化感物质对杉木幼苗生长的影响 |
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| 出 版 社：应用与环境生物学报 |
| 发表时间：2002年12月 |
| 台 站：
会同森林生态系统定位研究站
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| 作 者：汪思龙 陈龙池 廖利平 黄志群 |
| 点 击 率：5918 |
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| 关 键 字：化感物质 化感作用 对羟基苯甲酸 苯甲酸 肉桂酸 杉木 |
| 摘 要：采用培养皿滤纸法，施加研究了不同浓度的肉桂酸、苯甲酸、对羟基苯甲酸对杉木（Cunninghamia lanceolata）幼苗生长的影响。结果表明肉桂酸、苯甲酸、对羟基苯甲酸分别在1×10-5mol•L-1、1×10-3mol•L-1、1×10-4mol•L-1浓度时降低了叶绿素含量(P=0.05)，而在1×10-6mol•L-1、1×10-4mol•L-1、1×10-5mol•L-1浓度时抑制了杉木幼苗胚根和胚芽的生长(P=0.01)。3种酚类物质对胚根生长的抑制作用明显高于对胚芽生长的抑制作用。在3种酚类物质中，肉桂酸对杉木幼苗生长的抑制作用最强，对羟基苯甲酸次之，苯甲酸最弱。这表明酚类物质能在不同程度上抑制杉木幼苗的生长，降低其生产力，可能是连栽杉木人工林生产力降低的因素之一。 |
| 关 键 字(英文)：allelochemicals; allellopathy; P-hydroxybenzoic acid; benzoic acid; cinnamic acid; Chinese fir |
| 摘 要(英文)：The effects of different concentrations of three kinds of allelochemicals on the growth of Chinese fir (Cunninghamia lanceolata) seedlings were examined in the 9 cm petri dishes on filter paper. The results showed that cinnamic acid, benzoic acid and P-hydroxybenzoic acid significantly influenced the concentration of chlorophyll in seedlings at concentratioin of 1×10-6mol•L-1, 1×10-4mol•L-1 and 1×10-5mol•L-1 (P=0.05), respectively, and the growth of seedling radicle and stem at concentratioin of 1×10-5mol•L-1, 1×10-3mol•L-1 and 1×10-4mol•L-1 (P=0.01), respectively. Inhibition on the growth of radicle was stronger than that of stem. The extent to which allelochemicals influenced the seedling growth decreased in the order of cinnamic acid > P-hydroxybenzoic acid > benzoic acid. It is suggested that these allelechemicals could contribute to the reduction of productivity of Chinese fir plantation by harming growth of its seedlings. |
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 几种化感物质对杉木幼苗生长的影响.pdf |
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