不同PGPR菌株对松针叶绿素含量的影响
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摘要：笔者将荧光假单胞菌（Pseudomonas fluorescens）Q2-87、1M1-96、Pf-5和洋葱伯克霍尔德氏菌（Burkholderia cepacia）C23等四个PGPR菌株分别于2014年4月和5月接种于火炬松和湿地松苗根部;并于当年8月份利用手持式叶绿素测定仪测定两种松苗针叶的SPAD值。结果如下：①接种菌株Q2-87和1M1-96的火炬松苗针叶SPAD值显著高于清水对照;接种菌株Pf-5与接种菌株Q2-87和1M1-96的火炬松苗针叶SPAD值无显著性差异;②接种菌株Q2-87和1M1-96的湿地松苗针叶SPAD值显著高于清水对照。根据本文的实验结果和参阅文献，我们推断菌株Q2-87、1M1-96和Pf-5的代谢产物2，4-DAPG诱导火炬松和湿地松苗产生了系统诱导抗病性。
关键词：PGPR;湿地松;火炬松;叶绿素含量
中图分类号：Q939.96 文献标识码：A 文章编号：1004-3020（2015）04-
Effects of Different PGPR Strains on the Chlorophyll Content of
Pine Needle Leaf
Cai Sanshan（1） Chen Jingyuan（1） Hu Chenghui（1） Yang Jinhua（2） Fu Yun（3） Liu Gang（4）
- Hubei Academy of Forestry Wuhan 430075; 2. General Station of Hubei Provincial Forest Pests and Diseases Control and Quarantine Wuhan 430079; 3. Dangyang Municipal Forestry Bureau Dangyang 444100; 4. Songzi Municipal Forestry Bureau Songzi 434200）
Abstract： Four PGPR strains including Pseudomonas fluorescens Q2-87， 1M1-96， Pf-5 and Burkholderia cepacia C23， were inoculated on loblolly pine and slash pine in April and May， 2014，respectively; The SPAD values of pine seedlings were measured using SPAD 502 PLUS in August， 2014. The results were as follows： ①The SPAD values of the needle leaves of loblolly pine seedling inoculated with Q2-87 and 1M1-96 were significantly higher than that of loblolly pine seedling inoculated with water; That of loblolly pine seedling inoculated with Pf-5 had no significant difference with that of loblolly pine seedling inoculated with Q2-8...
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