红背桂花系大戟科常绿灌木,原产于亚洲热带地区。其叶面鲜绿色,叶背紫红色,小花黄色和普通桂花极相似,故得名。红背桂花主要用于观叶,较耐阴,可较长时间放在室内摆设。由于其性喜温暖,不耐寒,因此在北方较寒冷的地区冬季必须移于室内,方可安全过冬。红背桂花由于叶片正反两面分别为鲜绿和紫红,颜色鲜艳,富有生机而倍受人们的喜爱。红背桂花通常采用插枝繁殖法,需枝条量大,季节性强,生根缓慢且生根率低,大大限制了红背桂花的广泛栽培。针对这一问题,我们用组织培养的方法,探索出了一条红背桂花快速繁殖的途径。一、材料与方法供试材料为红背桂花(Excoecariacochinchinensis Lour.)别名红背桂。外植体处理:取幼枝及叶片用清水冲洗后,将幼枝剪成长约2厘米的小段,叶片剪 Red back osmanthus Department Euphorbiaceae shrubs, native to the tropical region of Asia. Its leaves bright green, purple dorsal, floret yellow and osmanthus very similar, so named. Red osmanthus is mainly used for foliage, more resistant to shade, can be placed on the interior for a long time. Because of its sexual warmth, not cold, so in the colder winter in the north must be moved indoors, before winter can be safe. Because of the red and black osmanthus leaves on both sides are fresh green and purple, bright colors, full of vitality and much people’s favorite. Osmanthus fragrans is usually used for cuttings propagation, requiring a large amount of branches, strong seasonality, slow rooting and low rooting rate, greatly limiting the widespread cultivation of Osmanthus fragrans. In response to this problem, we use the method of tissue culture to explore a way of rapid propagation of sweet-scented osmanthus. First, materials and methods The test material for the red-backed osmanthus (Excoeacariacochinchinensis Lour.) Alias ​​red back Gui. Explant treatment: Take young branches and leaves rinse with water, the young branches cut into small pieces about 2 cm, leaf scissors