| 两个喀斯特森林树种幼苗对不同光照的生态适应性 |
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| 引用本文： | 王艺,韦小丽.两个喀斯特森林树种幼苗对不同光照的生态适应性[J].贵州农业科学,2009,37(5). |
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| 作者姓名： | 王艺 韦小丽 |
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| 作者单位： | 贵州大学,林学院,贵州,贵阳,550025 |
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| 基金项目： | 中国科学院西部之光人才项目，贵州省自然科学基金，贵州省教委基金 |
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| 摘 要： | 以构树、青檀两种喀斯特森林树种幼树为材料进行盆栽试验,分别用100%、40%、20%、10%的光照强度处理50 d.结果表明:构树和青檀幼苗在相对光照强度为100%时株高达到最大,而在相对光强为40%时地径达最大.随着光照强度的降低,青檀的叶绿素含量、SOD活性和可溶性糖均增加,质膜透性和丙二醛含量则下降;构树的叶绿素含量、SOD活性和可溶性糖均下降,质膜透性和丙二醛含量则增加;并且在透光率40%处理条件下光合作用和蒸腾作用最大,生长也较好.表明,构树幼苗适应强光下生长,青檀幼苗适应轻度遮阴环境.
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| 关 键 词： | 光照强度 喀斯特森林树种 生态适应性 生理生化特性 生长特性 |
The Effect of Different Light Intensity on Seedling Ecological Adaptability of Two Karst Tree Species |
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| WANG Yi,WEI Xiao-li.The Effect of Different Light Intensity on Seedling Ecological Adaptability of Two Karst Tree Species[J].Guizhou Agricultural Sciences,2009,37(5). |
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| Authors: | WANG Yi WEI Xiao-li |
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| Institution: | Forestry College;Guizhou University;Guiyang;Guizhou 550025;China |
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| Abstract: | The pot experiment of Broussonetiap papyrifer and Pteroceltis tatarinowii Maxim seedlings was conducted under different light intensity for 50 d to study the effect on their ecological adaptability.The results showed that the seedling plant height and stem diameter of two tested species was up to maximum when the relative light intensity was 100% and 40% respectively.The chlorophyll content,SOD activity and soluble sugar content of P.tatarinowii Maxim's seedlings increased and its PM and MDA decreased with ... |
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| Keywords: | light intensity Karst tree species ecological adaptability physiological biochemical characteristic growth characteristic |
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