金叶莸组培快繁技术研究  

Study on the Rapid Culture of Caryopteris clandonensis

作　　者：龚莉萍[1] 王蓉[1] 杨贵泉[1] 张金枝[1] 

机构地区：[1]新疆农业职业技术学院,新疆昌吉831100

出　　处：《干旱区研究》2007年第2期223-226,共4页Arid Zone Research

基　　金：新疆昌吉州科委资助项目(2005C-03)彩叶树种的引进与繁殖

摘　　要：金叶莸是一种良好的园林绿化树种。通过容器基质配制、插穗剪取、激素处理、苗期管理等方面，介绍了金叶莸快速繁殖的主要技术方法——嫩枝扦插育苗法。本研究利用乌鲁木齐县种苗繁育基地1年生金叶莸实生苗当年萌发的嫩枝作为试验材料，研究了不同取材部位、不同浓度的6-BA和NAA组合对金叶莸组培快繁的影响，通过生根处理及驯化移栽成苗。结果表明：同一新梢不同部位的外植体在相同的培养条件下其芽的分化率明显不同，新梢中部的茎芽启动效果最好，诱导率为85％以上；中部5～10节腋芽分化率高，能形成完整健壮的植株。MS＋6-BA0．5mg／L＋NAA0．5mg／L为最佳继代增殖培养基，增殖率和有效芽苗率均高于其它处理。在生根过程中茎尖苗的生根效果较好，生根率在较短的时间内达到85％。PP333能促使瓶苗植株矮化健壮，从而提高苗木的移栽成活率。In this paper, the effects of 6-BA and NAA combinations of different organs and different concentrations on the rapid cuiture of Caryopteris clandonensis are lucubrated. The results show that the germination and rootability of the middle section of newly-growing twigs are the highest; the inducing ratio is higher than 85 % ; MS ＋ 6-BA 0.5 mg/L ＋ NAA 0.5 mg/L is the optimal successive transfer culture medium, and the germination and rootability of the twigs of Caryopteris dandonensis are high. The rootability of stem apex seedlings is high during rooting, and the rooting ratio of stem apex seedlings can be up to 85 % in short time. Short but strong seedlings can be cultured in PP333, thus, the survival ratio of the seedlings of Caryopteris clandonensis can be increased.

关 键 词：金叶莸CaryopteHs×dolMonensis 组培快繁 生根率 

分 类 号：S687[农业科学—观赏园艺] Q943.1[农业科学—园艺学]