2,3-BD多次诱导对匍匐翦股颖抗褐斑病的效果  

Resistance effects of creeping bentgrass on brown spot disease repeatedly induced by 2,3-BD

作　　者：刘兴菊[1] 马源[1] 马晖玲[1] 余倩倩[2] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [2]华南农业大学园艺学院,广东广州510642

出　　处：《草原与草坪》2017年第6期65-71,77,共8页Grassland and Turf

基　　金：国家自然科学基金(丁二醇诱导匍匐翦股颖抗病性及其ISR机理研究-31360583)资助

摘　　要：试验研究了250μmol/L的2,3-BD分别进行1、2、3、4次诱导对匍匐翦股颖植株抗病性的影响,计算了各处理的病情指数、诱导效果并测定了抗病相关酶以及叶绿素和丙二醛(MDA)等的含量。结果表明:2,3-BD多次诱导能使匍匐翦股颖植株的抗病性提升,其中,2次诱导处理的病情指数最低,为24.60%、诱导效果最好,为65.05%,同时与其他处理相比,,2次诱导处理下的SOD、POD、CAT、PAL等酶的活性增加,始终高于对照且差异显著,MDA的积累量最低。综合分析2,3-BD能够提高匍匐翦股颖的抗病能力,且经过2次诱导处理的效果最佳。The brown spot caused by Rhizoctonia solani is one of the most common diseases on creeping bentgrass plants. 2,3-BD （2,3-butanediol） can induce plants to improve disease resistance. The induced effects of 250 gmol/L of 2,3-BD repeatedly on creeping per, and induction were carried out 1,2,3 and 4 bentgrass plant disease resistance were investigated in this patimes, respectively. The disease index, induction effect, disease resistant enzymes,chlorophyll and malondialdehyde content were calculated. The results showed that the repeatedly induction of 2,3-BD disease index was the lowest 2 times. At the same time,t （ h improved the degree on the disease resistance of creeping bentgrass plants. The 24.6%） and induction effect was the highest （65.05%） when plants were induced e activities of enzymes （superoxide dismutase,peroxidase, catalase and phen nine ammonia-lyase） related to disease resistance were higher than other treatments and were significantly er than control. Accumulation of malondialdehyde was the lowe ance of creeping bentgrass,and the 2 times of induction showed ylala high st. The 2,3-BD can improve the disease resist- the best effect.

关 键 词：匍匐翦股颖 2 3-BD 诱导 褐斑病 

分 类 号：S688.4[农业科学—观赏园艺]