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当前位置: 首页 > 文章 > 蝴蝶兰‘V31’花芽分化的形态观察及几种代谢产物含量的变化 园艺学报 2010,37 (8) 1303-1310
Position: Home > Articles > Morphology and Changes of Several Metabolites Content During Flower Bud Differentiation in Phalaenopsis Acta Horticulturae Sinica 2010,37 (8) 1303-1310

蝴蝶兰‘V31’花芽分化的形态观察及几种代谢产物含量的变化

作  者：
韦莉;彭方仁;王世博;谭鹏鹏
单  位：
南京林业大学森林资源与环境学院
关键词：
蝴蝶兰;花芽;形态分化;C/N;核酸;代谢物质
摘  要：
以蝴蝶兰‘V31’为材料,观察了花芽分化过程,比较了成花诱导和花芽分化过程中叶片内C/N、核酸及相关代谢物质含量的变化。结果表明:蝴蝶兰花芽分化过程可分为6个阶段,即分化初始期、花序原基分化期、小花原基分化期、萼片原基分化期、花瓣原基分化期和合蕊柱及花粉块分化期。叶片中可溶性糖、淀粉和可溶性蛋白质含量均在低温处理35d达最大值;C/N值的2次高峰先后出现于处理15d和30d,进入花器官分化期,可溶性糖、淀粉和可溶性蛋白质含量及C/N值均呈下降趋势。RNA和总核酸含量的变化趋势一致,处理15d后持续增加,45d后随着合蕊柱和花粉块的大量分化而迅速下降;RNA/DNA值在处理前30d基本稳定,花芽萌出后急剧增长,而DNA含量的变化相对平缓。认为高水平的C/N有利于蝴蝶兰花芽的分化,RNA/DNA值(主要是RNA合成量)的急剧增长与植株由生理分化转向花芽形态分化有关。
译  名：
Morphology and Changes of Several Metabolites Content During Flower Bud Differentiation in Phalaenopsis
作  者：
WEI Li,PENG Fang-ren,WANG Shi-bo,and TAN Peng-peng (College of Forest Resources and Environment,Nanjing Forestry University,Nanjing 210037,China)
关键词：
Phalaenopsis;flower bud;morphological differentiation;C/N;nucleic acid;metabolite
摘  要：
The processes of flower bud differentiation in Phalaenopsis,cultivar‘V31’,was investigated,and changes of C/N,nucleic acid,and some other metabolites contents in the leaves were also investigated.The results showed that the process of flower bud differentiation could be divided into six phases,initial differentiation,inflorescence primordium differentiation,flower primordium differentiation,sepal primordium differentiation,petal primordium differentiation,column and pollinia differentiation.The contents of soluble sugar,starch and soluble protein in the leaves reached a peak at 35 d after low temperature treatment,and two peak periods of C/N value appeared at 15 d and 30 d.Changes of total nucleic acid content were similar to RNA content,which increased continually since 15 d after treatment,then gradually declined in the phase of column and pollinia differentiation,while the change of DNA content was gently.It was suggested that a high level of C/N be conducive to flower bud differentiation of Phalaenopsis,and the sharp increase in RNA/DNA value(mainly RNA synthesis)was closely relatedto the processes for physiological differentiation shift to morphological differentiation of flower bud.

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