一品红(Euphorbia pulcherrima willd)常用喷雾条件下带叶扦插的方法繁殖,茎段容易腐烂,繁殖速度慢。用茎段离体培养的方法可快速繁殖,繁殖速度是扦插的几十倍至上千倍。所以,茎段组织培养法是快速繁殖一品红的有效途径。笔者对分生培养基的筛选、生根及移栽等技术进行了综合试验。现将结果总结如下。 1 试验材料和方法 1.1 取材与消毒 从一品红植株上剪取长5cm左右的嫩梢,洗衣粉溶液浸3～5min,用自来水冲洗,在无菌条件下先用75%乙醇浸3～5s,再用0.1% Poinsettia (Euphorbia pulcherrima willd) Spray leaf cutting method commonly used under the conditions of propagation, stem perishable, slow reproduction. Stem segment in vitro culture method can be rapid propagation, propagation rate is tens of times to thousands of times the cuttings. Therefore, stem tissue culture is an effective way to breed poinsettia rapidly. The author of the meristematic screening, rooting and transplanting techniques such as a comprehensive test. The results are summarized below. 1 Test materials and methods 1.1 Material and disinfection Cut from the poinsettia plant about 5cm long shoots, washing powder solution immersed 3 ~ 5min, rinsed with tap water, under sterile conditions with 75% ethanol for 3 ~ 5s, and then With 0.1%