野生胭脂花(Primula maximowiczii)生长发育和花芽分化研究
投稿时间:2011-07-26  修订日期:2011-11-16  点此下载全文
引用本文:唐 明,游晓会,穆绘莉,毛娟娟,潘会堂,张启翔,等.野生胭脂花(Primula maximowiczii)生长发育和花芽分化研究[J].西北植物学报,2011,31(11):33~38
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作者单位E-mail
唐 明 北京林业大学园林学院  
游晓会 北京林业大学园林学院  
穆绘莉 北京林业大学园林学院  
毛娟娟 北京林业大学园林学院  
潘会堂 北京林业大学园林学院 htpan2000@gmail.com 
张启翔 北京林业大学园林学院  
基金项目:“十二五”国家科技支撑计划课题(2011BAD12B02)
中文摘要:为了探明野生胭脂花生长发育和花芽分化的规律,为人工栽培胭脂花提供依据,本研究以胭脂花野生群体为研究对象,经过2008~2010年连续3年的观测,探明了野生胭脂花的年生长发育进程;采用石蜡切片法制片,利用普通光学显微镜和体视显微镜观察了胭脂花花芽分化和花序发育的过程。结果如下:(1)胭脂花的年生长发育进程可分为萌芽期、营养生长期、开花期、果实发育期、果熟期、花芽分化期和休眠期等7个阶段,5~9月为胭脂花的生长季,春季日平均气温为5℃左右时开始萌发,生长期日平均温度不超过20℃。(2)胭脂花花芽分化期为7月中下旬~9月上旬,历时约2个月,整个过程包括未分化期、花芽原基分化时期、小花原基分化期和小花分化期;花序上的小花由外向内逐渐形成并发育,雌雄蕊的发育从8月中下旬开始到9月上中旬结束;花序发育完全的胭脂花植株进入休眠期,经过10月~4月的低温阶段翌年开花。胭脂花花芽分化进程和外部形态密切相关,可用植株的外部形态特征快速判定花序发育状况。
中文关键词:胭脂花  生长发育  花芽分化  显微结构
 
Growth, Development and Flower Differentiation of wild Primula maximowiczii
Abstract:The annual growth and development rhythms of wild Primula maximowiczii plants in Dongling Mountains, Beijing were investigated from 2008-2010,and the flower initiation and inflorescence development were observed by light microscope. The results were as follows: (1) The annual growth and development of P. maximowiczii plants fulfilled under relative cool environment (5℃-20℃, average day temperatures) from May to September, and could be divided into 7 stages, including sprouting phase, vegetable growth phase, blossom phase, fruitage phase, mature fruit phase ,flower differentiation phase and dormancy phase. The fruit developed from July to August which was in the hottest season. (2) Flower initiation of P. maximowiczii began in middle or late July and finished in early September, which lasted almost two months, and the whole process could be divided into four stages, including vegetative stage, inflorescence primordium differentiation stage, inflorescence formation stage and floret differentiation stage. The florets formed from the outside to the inside of an inflorescence. Pistil and stamen formed and developed from middle August to middle
keywords:Primula maximowiczii  growth and development  flower differentiation and development  microstructure
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