四种生长素对拟南芥根生长发育的影响  

Study on the Root Growth and Development of Arabidopsis thaliana

作　　者：周索[1] 杜丽[1] 

机构地区：[1]南阳师范学院,河南南阳473061

出　　处：《北方园艺》2008年第3期51-52,共2页Northern Horticulture

基　　金：河南省科技攻关资助项目(0624050023);南阳师范学院科研基金资助课题(nytc200531)

摘　　要：利用奈乙酸(NAA)、吲哚乙酸(IAA)、吲哚丁酸(IBA)和2,4-D等4种生长素的不同浓度(0、0.01、0.02、0.05、0.1、0.15和0.2 mg/L)的溶液,分别在MS培养基上对拟南芥萌发的幼苗进行处理,对其生根情况进行测定,结果表明:4种生长素都能抑制拟南芥主根生长,促进不定根生长,2,4-D的抑制作用最明显;IBA与IAA的促进作用差异不显著;NAA在0.05 mg/L时;促进作用最强。The germination seedling of Arabidopsis thaliana was treated in MS medium with four kinds of plant growth regulator（NAA, IAA,IBA and 2,4-D） and the different concentrations （0,0.01,0.02,0.05,0. 1,0. 15 and 0.2 mg/L）, respectively and the rooting growth situations were measured. The result showed that the different concentrations of exogenous auxin all inhibited the root development and promoted adventitious root. 2,4-D had most signification effect, and IBA and IAA were not signification. 0.05 mg/L concentration of NAA had markedly effectiveness.

关 键 词：拟南芥 IAA IBA 2 4-D NAA 根 

分 类 号：S482.8[农业科学—农药学]