干旱胁迫下丛枝菌根真菌对月季生理指标的影响  

Effects of Arbuscular Mycorrhizal Fungi on Physiological Index of Rose Cultivars under Drought Stress

作　　者：于明华 郑婷 马烈 田静 徐峻育 汪成忠[5] Yu Minghua;Zheng Ting;Ma Lie;Tian Jing;Xu Junyu;Wang Chengzhong(Suzhou Horticulture Station,Suzhou,215128;Taicang Agricultural and Rural Science and Technology Service Centre,Taicang,215400;Suzhou Huachuang Xinmei Biological Seed Technology Co.,Ltd.,Suzhou,215300;Suzhou Huayu Wuniang Horticulture Professional Cooperatives,Suzhou,215100;Suzhou Polytechnic Institute of Agriculture,Suzhou,215008)

机构地区：[1]苏州市园艺站,苏州215128 [2]太仓市农业农村科技服务中心,太仓215400 [3]苏州华创欣美生物种业科技有限公司,苏州215300 [4]苏州花语吴娘园艺专业合作社,苏州215100 [5]苏州农业职业技术学院,苏州215008

出　　处：《分子植物育种》2024年第16期5415-5423,共9页Molecular Plant Breeding

基　　金：江苏现代农业产业技术体系建设专项(JATS[2022]121;JATS[2021]116)资助。

摘　　要：为探讨接种丛枝菌根真菌(AMF)后月季对干旱胁迫的耐受性机制,采用盆栽试验研究了丛枝菌根真菌对干旱胁迫下月季品种抗氧化酶活性和光合特性的影响。结果表明:3个月季品种在正常浇水情况下接种Ri的菌根侵染率达到47%以上,在干旱胁迫下为20%左右;干旱胁迫抑制了菌根的形成,但接种AMF组叶片厚度和比叶质量、可溶性蛋白含量、SOD含量、CAT含量较干旱胁迫组有显著提高,MDA含量较干旱胁迫组显著降低。表明接种AMF使月季抗氧化潜在能力得到提升;干旱胁迫下,显著降低了3个月季品种的光合能力,接种AMF后均能有效提升3个月季品种的LSP、P_(max)值,并和未接种处理达到显著差异。接种AMF能够促进3个月季品种维持抗氧化系统的稳定性,调节渗透平衡,提升光合作用能力,有效缓解干旱胁迫对3个月季品种生长的不良影响。To explore the tolerance mechanism of arbuscular mycorrhizal fungi(AMF)on rose cultivars to drought stress,pot experiment was conducted to study the effects of arbuscular mycorrhizal fungi on the activities of antioxidant enzymes and photosynthetic characteristics of rose cultivars under drought stress.The results showed that the mycorrhizal infection rate of three rose cultivars inoculated with Ri was over 47%under normal watering condition,and about 20%under drought stress.Drought stress inhibited the formation of mycorrhiza,but the leaf thickness and leaf mass per area,soluble protein content,SOD content and CAT content in AMF group were significantly increased compared with drought stress group,while MDA content was significantly decreased compared with drought stress group.The results showed that AMF inoculation increased the potential antioxidant capacity of rose;the photosynthetic capacity of the three rose cultivars was significantly reduced under drought stress.After inoculation with AMF,LSP and Pmax values of the three rose cultivars could be effectively increased,which was significantly different from non-AM fungal treatment.The stability of antioxidant system of the three rose cultivars was remarkably promoted,the osmotic balance was regulated,and photosynthetic capacity was improved under drought stress with AMF.AMF effectively alleviate the adverse effects of drought stress on the growth of three rose cultivars.

关 键 词：从枝菌根真菌 干旱胁迫 抗氧化酶 光合特性 月季品种 

分 类 号：S685.12[农业科学—观赏园艺]