机构地区: 河南农业大学农学院
出 处: 《植物生理学通讯》 2005年第3期319-321,共3页
摘 要: 水培法研究烟草打顶和喷施外源生长调节物质的结果表明:打顶的比不打顶的烟草根中鸟氨酸脱羧酶(ODC)、腐胺N-甲基转移酶(PMT)和N-甲基腐胺氧化酶(MPO)活性升高,烟叶中烟碱含量剧增;打顶喷施ABA和6-BA烟叶中烟碱含量升高,喷施IAA和GA3的下降,IAA的效果更明显。 Effects of shoot topping and exogenous plant growth regulators on some enzyme activities andnicotine content of roots were studied. The results showed that the activities of ornithine decarboxylase(ODC),putrescine N-methyltransferase (PMT) and N-methylputrescine oxidase (MPO) and nicotine content in toppingplants were higher than those in non-topping plants. Leaf spraying with ABA and 6-BA could increase thenicotine content in topping plants, but leaf spraying with IAA and GA3 significantly decreased nicotine content.The effect of IAA was more than that of GA3.
关 键 词: 烟碱含量 植物生长调节物质 生理效应 活性变化 草根 外源 合成酶 鸟氨酸脱羧酶 甲基转移酶 胺氧化酶 甲基 打顶 喷施 水培法 烟叶 烟草