| 受小蠹虫不同阶段为害的云南松光合生理反应分析 |
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| 引用本文： | 梁军生,陈晓鸣,王健敏,刘娟,杨子祥,陈航.受小蠹虫不同阶段为害的云南松光合生理反应分析[J].林业科学研究,2009,22(3). |
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| 作者姓名： | 梁军生 陈晓鸣 王健敏 刘娟 杨子祥 陈航 |
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| 作者单位： | 中国林业科学研究院资源昆虫研究所,国家林业局资源昆虫培育与利用重点实验室,云南,昆明,650224 |
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| 基金项目： | 云南省应用基础研究重点项目 |
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| 摘 要： | 分析了15年生云南松在横坑切梢小蠹、云南纵坑切梢小蠹在蛀梢和蛀干为害期的针叶光合生理反应.Dun-can多重比较结果表明:云南松在小蠹虫蛀梢和蛀干期显著影响了针叶同化CO<,2>的能力,针叶净光合速率分别下降了31%和65%,气孔导度、蒸腾速率等光合指标也出现极显著下降(P<0.01).相关性分析表明:针叶净光合速率与各生理生态因子的相关关系以及主要生理生态因子之间的相关关系在小蠹虫不同的蛀害期而不同.小蠹虫蛀梢和蛀干为害显著降低了针叶叶绿素含量(P<0.05),但受蛀梢为害的云南松针叶叶绿素a/b值显著高于健康或受蛀干为害的云南松.针叶最大荧光(Fm)、最大光量子效率(Fv/Fm)以及Fv/Fo均因小蠹虫蛀梢和蛀干为害而显著下降,尤以在被蛀干时的针叶Fm、Fv/Fm、Fv/Fo下降幅度更大.综合分析表明:受小蠹虫"胁迫"(蛀梢、蛀干)后针叶叶绿素合成受到显著影响,引起了寄主云南松光合机构的破坏,导致寄主云南松树势下降,这必为喜欢攻击亚健康或衰弱林木的次期性昆虫创造合适的寄主.
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| 关 键 词： | 小蠹虫 云南松 光合生理 叶绿素荧光 |
Analysis on Photosynthetic Physiological Responses of Pinus yunnanensis Franchet to Bark Beetles Attacking in Different Stages |
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| HANG Jun-sheng,CHEN Xiao-min,WANG Jian-min,LIU Juan,YANG Zi-xiang,CHEN Hang.Analysis on Photosynthetic Physiological Responses of Pinus yunnanensis Franchet to Bark Beetles Attacking in Different Stages[J].Forest Research,2009,22(3). |
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| Authors: | HANG Jun-sheng CHEN Xiao-min WANG Jian-min LIU Juan YANG Zi-xiang CHEN Hang |
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| Institution: | Research Institute of Resource Insects;CAF;Key Laboratory of Breeding and Utilization of Resource Insects ofState Forestry Administration;Kunming 650224;Yunnan;China |
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| Abstract: | Tomicus minor(Hartig) and Tomicus yunnanensis(Kirkendall & Faccoli)are two severely boring bark beetles of coniferous forest of Pinus yunnanensis(Franchet) in Yunnan Province.The geographical distribution and the boring period of the both were mutually overlapping,shoot and trunk could be attacked by them also in their damage progress.Hence,the character of combined damage to host P.yunnanensis was presented.In this paper,the needle photosynthetic physiology of P.yunnanensis attacked by the two bark beetles... |
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| Keywords: | bark beetle Pinus yunnanensis photosynthetic physiology chlorophyll fluorescence |
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