丛枝菌根真菌(AMF)对低温胁迫下黄瓜幼苗生长及叶绿素荧光参数的影响  

Effects of Arbuscular Mycorrhiza Fungi on Seedlings Growth and Chlorophyll Fluorescence Parameters in Cucumber under Low Temperature Stress

作　　者：曹岩坡[1] 戴鹏[1] 戴素英[1] 

机构地区：[1]河北省农林科学院经济作物研究所,河北石家庄050051

出　　处：《河北农业科学》2016年第1期34-37,共4页Journal of Hebei Agricultural Sciences

摘　　要：以黄瓜品种津优303为试验材料,设低温+灭菌接种物、常温+菌剂、低温+菌剂3个处理,以常温+灭菌接种物处理为对照,研究了接种丛枝菌根真菌(AMF)对低温胁迫下黄瓜幼苗生长及叶绿素荧光参数的影响。结果表明:低温胁迫下黄瓜幼苗生长量(株高,地上部和地下部的鲜重与干重)、黄瓜幼苗叶片光合参数(净光合速率、气孔导度、蒸腾速率和叶绿素含量)以及叶绿素荧光参数[最大荧光(F_m)、初光能转换效率(F_v/F_m)、PSII的潜在光化学活性(F_v/F_0)]均显著<CK,严重抑制了黄瓜幼苗的生长;初始荧光(F_0)显著>CK,PSII反应中心遭受损害。低温胁迫下接种AMF处理的黄瓜幼苗生长量以及叶片幼苗光合参数和叶绿素荧光参数指标值均显著>未接种AMF处理,F_0显著<未接种AMF处理,其中,叶绿素含量提高10.24%,F_m、F_v/F_m和F_v/F_0分别提高14.2%、5.9%和31.4%,F0降低8%,明显缓解低温胁迫对幼苗的伤害。The effects of inoculation of arbuscular mycorrhiza fungi on seedlings growth and chlorophyll fluorescent characteristics of seedlings of cucumber （Jinyou 303） under low temperature stress were inves-tigated in the growth chamber. The results showed that AMF inoculation treatment could significantly pro-mote the seedlings height,fresh weight,dry weigh under low temperature stress. Compared with the con-trol treatment,AMF inoculation treatment could significantly promote the chlorophyll contents by 10.24%, and increment Fm,Fv/Fm,Fv/F0 by 14.2%,5.9% and 31.4%,while reduced F0 by 8%.

关 键 词：黄瓜 低温胁迫 叶绿素荧光参数 丛枝菌根真菌 

分 类 号：S642.2[农业科学—蔬菜学]