利福平对泡桐丛枝病幼苗形态和内源植物激素变化的影响  

Effects of Rifampin on the Changes of Morphology and Plant Endogenous Hormones of Paulownia Seedlings with Witches' Broom

作　　者：范国强[1] 张变莉[1] 翟晓巧[1] 刘飞[1] 马玉彬 阚盛[1] 

机构地区：[1]河南农业大学泡桐研究所,河南郑州450002 [2]惠济区林业局,河南郑州450008

出　　处：《河南农业大学学报》2007年第4期387-390,395,共5页Journal of Henan Agricultural University

基　　金：国家自然科学基金项目(30571496);高等学校博士学科点专项科研基金项目(20050466003);河南省杰出青年基金项目(0612001900)

摘　　要：研究了不同质量浓度的利福平对豫杂一号泡桐丛枝病组织培养苗形态和内源植物激素变化的影响.结果表明,100,150 mg.L-1利福平处理30 d的患病幼苗均不呈现丛枝病症状,但PCR检测到100 mg.L-1利福平处理幼苗顶芽内仍有植原体存在.随着利福平质量浓度的增大和幼苗患病程度的减轻,幼苗顶芽内内源植物激素ZR含量逐渐下降、IAA含量逐渐升高.说明利福平对豫杂一号泡桐丛枝病幼苗内的植原体和内源植物激素变化产生了影响.Effects of different concentration of rifampins on the changes of morphology and plant endogenous hormones of Paulownia tornentosa × Paulownia fortunei seedlings with witches＇ broom were studied. The result indicated that there existed no phytoplasmas in the buds of those seedlings treated with 150 mg ·L^-1 rifampin with PCR, although the seedlings treated with 100 mg ·L^-1 and 150 mg ·L^- 1 rifampin for 30 d were asymptomic. With the increasing of rifampin concentrations and alleviating of the symptom, ZR content decreased and IAA increased gradually, This meant that rifampin had effects on the changes of phytoplasmas and plant endogenous hormones of paulownia seedlings with witches＇ broom.

关 键 词：泡桐 丛枝病 利福平 内源植物激素 

分 类 号：S792.43[农业科学—林木遗传育种]