草酸、水杨酸及BTH对甜瓜体内几种防御酶活性的影响  

Effects of Oxalate, SA and BTH on Defense Enzyme Activity in Muskmelon

作　　者：侯珲[1] 周增强[1] 王丽[1] 

机构地区：[1]中国农业科学院郑州果树所,郑州450009

出　　处：《中国农学通报》2016年第30期171-175,共5页Chinese Agricultural Science Bulletin

基　　金：中国农业科学院科技创新工程(CAAS-ASTIP);"十一五"国家科技支撑计划重点项目"园艺作物安全高效生产关键技术研究与示范"02课题(2006BAD07B02)

摘　　要：为研究叶面喷施草酸、水杨酸（SA）和BTH对甜瓜植株防御酶活性的影响,在甜瓜二叶期用不同浓度的草酸、水杨酸（SA）和BTH对甜瓜植株进行处理。结果表明：经草酸处理后,甜瓜植株体内的β-1,3-葡聚糖酶和POD活性均较对照植株有明显升高,在处理后9天达到高峰,β-1,3-葡聚糖酶活性与对照相比提高了2.7～3.9倍,POD活性比对照提高了3.5～4.8倍。但草酸处理并没有引起PAL活性的提高。用水杨酸（SA）和BTH处理植株,甜瓜植株体内的β-1,3-葡聚糖酶、POD和PAL活性较对照植株也有明显的提高,在处理后7天均达到高峰,其中β-1,3-葡聚糖酶活性比对照提高了1.9～3.8倍;POD活性提高了3～5.5倍;PAL活性提高了1.8～5.2倍。In order to research the activities of defense enzymes in muskmelon, the oxalate, salicylic acid and BTH were used to treat 2- leaf muskmelon leaves in different concentrations. The results showed that aftertreated by oxalate, the activities of β-1,3-glucosidase and peroxidase（POD） in 2-leaf muskmelon leaves werehigher than that in the control. And the β-1,3-glucosidase activity increased 2.7 to 3.9 times, POD activityincreased 3.5 to 4.8 times 9 days after the treatment. But PAL activity could not be induced by oxalate. Aftertreated by SA and BTH, the activities of β-1,3-glucosidase, POD and PAL were higher than that of the controlobviously. And the β-1,3-glucosidase activity increased 1.9 to 3.8 times, POD activity increased 3 to 5.5 timesand PAL activity increased 1.8 to 5.2 times 7 days after the treatment.

关 键 词：甜瓜 诱导 防御酶 诱导抗性 

分 类 号：S652[农业科学—果树学]