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AM真菌对高温胁迫下黑麦草生长及生理影响
赵炳硕1, 于森淼2, 卢彦如3, 刘帅卿4, 王光凯5, 王 洋5
1.青州市杨集林场;2.南水北调中线信息科技有限公司;3.青岛农业大学 园林与林学院;4.山东经纬润林发展集团有限公司;5.山东正元地质资源勘查有限责任公司 地质环境研究院
摘要:
以多年生黑麦草为材料，采用盆栽的方法，研究不同高温胁迫下AM 真菌Arbuscular mycorrhizal 对多年生黑麦草Lolium perenne 的生长及生理代谢的影响。结果表明：高温胁迫下，接种AM真菌可以促进多年生黑麦草的生长，多年生黑麦草的株高、地上与地下部干质量有明显增加，与对照差异显著；与对照相比，接种AM 真菌能够显著提高多年生黑麦草的净光合速率、蒸腾速率、气孔导度及叶绿素最大荧光速率，降低细胞间CO2 浓度，增强植株光合能力。高温胁迫下，接种AM 真菌可以减轻高温胁迫对多年生黑麦草造成的伤害，在一定程度上可以提高多年生黑麦草的抗热性。
关键词:  多年生黑麦草  AM 真菌  高温胁迫  生长指标  光合指标  叶绿素荧光
DOI：
分类号:
基金项目:露天矿绿色矿山建设中矿山地质环境治理植物适应性试验资助项目(6602421063)。
Effects of AM Fungi on Growth and Physiology of Lolium perenne under High Temperature Stress
ZHAO Bingshuo1, YU Semmiao2, LU Yanru3, LIU Shuaiqing4, WANG Guangkai5, WANG yang5
1.Qing Zhou Yangji Forestry Center;2.Information Technology Co,Ltd of South-to-North Water Diversion Middle Route Project;3.College of Landscape Architecture and Forestry,Qingdao Agricultural University,Qingdao;4.Shandong Jingwei Runlin Development Group Co Ltd,Qingdao;5.Geological Environment Research Institute of Shandong Zhengyuan Geological Resources Exploration Co Ltd
Abstract:
This paper studied the effects of Arbuscular mycorrhizal (AM) on the growth and physiological metabolism of L. perenne under different heat stress in potted plants. The results showed that AM fungi could promote the growth of L. perenne under high temperature stress, and the plant height and dry weight of the aboveground and underground ground of L. perenne were significantly increased, which were significantly different from those before the control. Compared with the control, inoculation with AM fungi could significantly increase the net photosynthetic rate, transpiration rate, stomatal conductance and the maximum fluorescence rate of chlorophyll, reduce the intercellular CO2 concentration, and enhance the photosynthetic capacity of L. perenne. Under high temperature stress, inoculation with AM fungi can reduce the damage of L. perenne caused by high temperature stress and improve the heat resistance of L. perenne to a certain extent.
Key words:  Lolium perenne  AM fungi  temperature stress  growth index  photosynthetic index  fluorescence index