| 煤污病害对灰金竹叶片光合及生理生态特性的影响 |
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| 引用本文： | 刘蔚漪,辉朝茂,刘广路,刘国武,罗选航,刘永娇.煤污病害对灰金竹叶片光合及生理生态特性的影响[J].林业科学研究,2020,33(4):160-168. |
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| 作者姓名： | 刘蔚漪 辉朝茂 刘广路 刘国武 罗选航 刘永娇 |
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| 作者单位： | 西南林业大学,丛生竹工程技术研究中心,云南昆明650224;国际竹藤中心,竹藤科学与技术重点实验室,北京100102;昆明市东川区二二二林场,云南昆明654106 |
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| 基金项目： | 国家科技支撑计划;国家科技支撑计划;国家科技支撑计划;竹藤种质资源培育技术创新;云南滇南竹林生态系统定位观测研究站运行经费资助 |
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| 摘 要： | 目的]探讨煤污病对灰金竹生长的影响,为灰金竹的科学栽培管理提供参考。方法]分别以正常和染病的灰金竹为研究对象,采用Li-6400XT便携式光合系统测量叶片的光合特性指标、实验室测定生理特征指标、立竹构件与生物量等指标,从生理代谢角度评价煤污病害对灰金竹的影响。结果](1)煤污病可显著影响灰金竹的光合作用,煤污病导致灰金竹光合速率、气孔导度和蒸腾速率等降低,却增加了胞间CO2浓度和叶绿素含量。光照强度是影响正常灰金竹光合速率的主导因子,胞间CO2浓度和大气CO2浓度是影响染病灰金竹光合速率的主导因子。(2)灰金竹感染煤污病后,可溶性蛋白含量降低,超氧化物歧化酶活性和丙二醛含量升高,叶片衰退速度加快,将光能转化为化学能的机能下降。(3)正常灰金竹立竹指标值均比染病灰金竹的立竹指标高,除地径和枝下高差异不显著外,胸径、全株高和厚壁率差异显著(P<0.05),且正常灰金竹生物量显著大于染病灰金竹。结论]煤污病影响灰金竹的光合特性,使其光合作用降低,叶片生理指标发生变化,叶片衰退速度加快,进而影响立竹指标和生物量,降低灰金竹生产力。
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| 关 键 词： | 煤污病 灰金竹 光合 生理指标 生物量 |
Influence of Sooty Blotch on Photosynthetic and Eco-physiological Characteristics of Phyllostachys nigra var. henonis |
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| LIU Wei-yi,HUI Chao-mao,LIU Guang-lu,LIU Guo-wu,LUO Xuan-hang,LIU Yong-jiao.Influence of Sooty Blotch on Photosynthetic and Eco-physiological Characteristics of Phyllostachys nigra var. henonis[J].Forest Research,2020,33(4):160-168. |
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| Authors: | LIU Wei-yi HUI Chao-mao LIU Guang-lu LIU Guo-wu LUO Xuan-hang LIU Yong-jiao |
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| Institution: | (Engineering Research Center of Sympodial Bamboo,Southwest Forestry University,Kunming 650224,Yunnan,China;International Centre for Bamboo and Rattan,Key Laboratory of Bamboo and Rattan,Beijing 100102,China;222Forest Farm of Dongchuan District,Kunming,Kunming 654106,Yunnan,China) |
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| Abstract: | Objective] To investigate the effect of sooty blotch on growth of Phyllostachys nigra var. henonis, and provide a reference for scientific cultivation and management of this bamboo. Method] Healthy and infected bamboo were selected as the experimental material. Li-6400 portable photosynthesis was used to measure the photosynthetic characteristics of Ph. nigra var. henonis, and physiological characteristics, components and biomass were measured in laboratory. Finally, the effects of sooty blotch were evaluated from the viewpoint of physiological metabolism. Result](1) The results showed that the sooty blotch could affect the photosynthesis of Ph. nigra var. henonis significantly, it can reduce the photosynthetic rate, stomatal conductance, and transpiration, but increase the intercellular CO2 concentration and chlorophyll content. The light intensity was the main factor affecting the photosynthetic rate of healthy bamboo, while intercellular CO2 concentration and the atmosphere CO2 concentration were the main factor affecting the photosynthetic rate of infected bamboo.(2) Once the bamboo was infected with sooty blotch, its soluble protein( SP) content decreased, while the superoxide dismutase(SOD) and malondialdehyde(MDA) increased. Therefore, the speed of leaf degeneration accelerated, the function of transforming light into chemical energy decreased.(3) The standing culms index of normal bamboo were larger than those of infected bamboo.Except the difference of ground diameter and height under branches, the DBH, height of whole plant and thick wall rate were significantly different(P<0.05), and the biomass of normal bamboo was significantly larger than that of infected bamboo. Conclusion] Sooty blotch affects the photosynthetic characteristics of Ph. nigra var. henonis, reduces its photosynthesis, changes the physiological indexes of leaves, and accelerates the decline of leaves, thus affecting the index and biomass of Ph. nigra var. henonis, and reduces its productivity. The infected bamboo will be affected not only on appearance, but also the whole bamboo forests. Chemical control is necessary to control over the spread of sooty blotch. The bamboo forests should be pruned to control the appropriate density, and to ensure the ventilation and light transmission, decrease the occurrence of disease. |
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| Keywords: | sooty blotch Phyllostachys nigra var henonis photosynthetic physiological indicators biomass |
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