| 云南松凋落叶浸提液对其种子萌发和幼苗生长的影响 |
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| 引用本文： | 管国伟,廖周瑜,陈鹏,王邵军,丁重飞,韦畅. 云南松凋落叶浸提液对其种子萌发和幼苗生长的影响[J]. 种子, 2020, 0(3): 20-23 |
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| 作者姓名： | 管国伟 廖周瑜 陈鹏 王邵军 丁重飞 韦畅 |
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| 作者单位： | 西南林业大学生态与环境学院;云南省林业和草原科学院 |
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| 基金项目： | 国家自然科学基金(31660191);云南省应用基础重点项目(2013 FA 055)资助。 |
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| 摘 要： | 以云南松种子为受体,研究了云南松凋落叶的水浸提液和乙醇浸提液对其种子萌发和幼苗生长的影响,从化感作用的角度探讨云南松天然林更新困难的成因。结果表明:云南松凋落叶水和乙醇浸提液对其种子萌发和幼苗生长均产生化感抑制作用(SEI<0),而且抑制强度随浸提液浓度的增加大致呈增强的趋势。研究结果表明,云南松凋落叶具有化感自毒作用,这也是导致云南松天然林更新困难的重要成因之一。
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| 关 键 词： | 云南松 凋落叶 化感自毒作用 |
Effects of Leaf Litters Extracts from of Pinus yunnanensis on Seed Germination and Seedling Growth |
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| GUAN Guowei,LIAO Zhouyu,CHEN Peng,WANG Shaojun,DING Chongfei,WEI Chang. Effects of Leaf Litters Extracts from of Pinus yunnanensis on Seed Germination and Seedling Growth[J]. Seed, 2020, 0(3): 20-23 |
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| Authors: | GUAN Guowei LIAO Zhouyu CHEN Peng WANG Shaojun DING Chongfei WEI Chang |
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| Affiliation: | (College of Ecological and Environment,Southwest Forestry University,Kunming 650224,China;Yunnan Academy of Forestry and Grassland,Kunming 650201,China) |
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| Abstract: | The effects of water and ethanol extracts from leaf litters of Pinus yunnanensis on seed germination and seedling growth of P.yunnanensis were investigated and the causes of the difficulty of regeneration of Yunnan pine natural forest from the perspective of allelopathy was also discussed.Results showed that the water and ethanol extracts of P.yunnanensis litters had allelochemical inhibition on seed germination and seedling growth(SEI<0),and the inhibition intensity was generally increased with the increase of the extract concentration.The results showed that the litters of Yunnan pine have the allelopathic autotoxicity which is one of the important causes of an difficulty in the regeneration of yunnan pine natural forest. |
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| Keywords: | Pinus yunnanensis leaf litters allelopathic autoxicity |
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