文献类型：期刊文献

中文题名：生长调节物质对春石斛假鳞茎萌芽与封顶的调控效应

英文题名：Effects of plant growth regulators on controlling pseudobulb and keikis of nobile type dendrobium

作者：李振坚[1] 王雁[1] 彭镇华[1] 缪崑[1] 王彩云[2] 于耀[1]

第一作者：李振坚

机构：[1]中国林业科学研究院林业研究所、国家林业局林木培育重点实验室;[2]华中农业大学园艺林学学院

年份：2009

期号：1

起止页码：79-83

中文期刊名：北京林业大学学报

外文期刊名：Journal of Beijing Forestry University

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：“948”国家林业局引进项目(2006-4-C07);中央级公益性科研院所专项基金(2060302);“十一五”国家科技支撑计划项目(2006BAD07B05)

语种：中文

中文关键词：春石斛;假鳞茎;高芽;封顶;6-苄氨基嘌呤(6-BA);赤霉素(GA3);多效唑(PP333)

外文关键词：nobile type dendrobium ; pseudobulb ; keikis ; terminal leaf formation ; 6-benzylaminopurine（6- BA） ; gibberellin （ GA3 ） ; paclobutrazol （PP333）

分类号：S682.31

摘要：该文在探讨春石斛假鳞茎生长规律基础上,研究了GA3和6-BA对高芽萌发的调控效果,PP333对假鳞茎封顶的调控效果。结果表明：生长季,假鳞茎节间平均生长长度为3.57 cm,节间日均生长量为0.068 cm,假鳞茎日均生长量为0.28 cm;如需形成50-60 cm高的假鳞茎,需要在1月末至2月间开始留鳞芽,同时需要不能晚于8月底停长,假鳞茎节数可达14-19节,能形成高质量的假鳞茎;PP333可促进假鳞茎及时封顶,50 mg/L灌根处理效果最佳;用6-BA处理有利于高芽和鳞芽形成,植株灌根浓度以200 mg/L最佳;GA3各种浓度处理都不利于高芽和鳞芽形成,导致徒长和落叶。
Based on growth experiments of pseudobulb and nodes of nobile type dendrobium, growth regulators GA3 and 6-BA were used to promote keikis sprouting. Growth regulator PP333 was used to control growth. It was found that the average length of pseudobulb per node was 3.57 cm, average growth per node was 0. 068 cm, growth period was 52.5 days per node, average daily growth of pseudobulb was 0.28 cm during the growing periods. Off-shoot buds were needed to initiate growth during the end of January and February for pseudobulbs to grow up to 50 - 60 cm tall until August. The node number of pseudobulb would be up to 14 - 19. Appropriate concentration of PP333 could promote pseudobulb to form terminal leaf in time. The available concentration was 50 mg/L. During the growth period, 6-BA could promote keikis and off-shoots sprouting and the best concentration was 200 mg/L. All GA3 treatments under varied density would result in watershoot and leaf falling, but the number of keikis didn＇ t change.