‘梦境’百日草花芽分化特性研究  

Study on Flower Bud Differentiation Characteristics of Zinnia elegans ‘Dreamland’

作　　者：王琴[1] 陈旭[1] 贺亚川[1] 岳远征[1] 胡惠蓉[1] 

机构地区：[1]华中农业大学园艺林学学院园艺植物生物学教育部重点实验室,湖北武汉430070

出　　处：《安徽农业科学》2009年第34期16829-16831,16852,共4页Journal of Anhui Agricultural Sciences

基　　金："十一五"国家支撑计划"园艺作物安全高效生产关键技术研究与示范"(2006BAD07B05);华中农业大学科技创新基金项目(2008XCX013);华中农业大学博士科研启动费项目(52204-07025)

摘　　要：[目的]研究‘梦境’百日草的分化形态及与营养生长的相关性。[方法]观察‘梦境’百日草不同时期顶芽的石蜡制片,并测定其株高、株幅、真叶数和分枝数等生长指标。[结果]‘梦境’百日草花芽分化过程划分为8个时期:营养生长前期、营养生长后期、花序原基分化期、苞片原基分化期、舌状花原基分化期、筒状花原基分化期、筒状花花冠和雄蕊原基分化期、筒状花雌蕊原基分化期;通过各生长指标的观测,得到了花芽分化时期与各生长指标间的回归方程。[结论]‘梦境’百日草各生长指标与花芽分化时期间均存在极显著的线性相关,其中,播种天数与花芽分化时期间的相关性最大。[ Objective] The research aimed to study the differentiation morphology and its relationship between vegetative growth of Zinnia elegans ＇Dreamland＇. [ Method]The paraffin section of Z. elegans ＇Dreamland＇ terminal bud in different period was observed. And the growth index of Z. elegans at each time （plant height, crown diameter,leaf number,days after seeding） was determined. [ Result ] Flower bud differentiation process was divided into 8 phases： vegetative growth prophase, vegetative growth anaphase, inflorescence primordium differentiation phase, bract differentiation phase ,ligulate flower primordium differentiation phase, tubular flower primordium differentiation phase, tubular flower corolla and stamen primordium differentiation phase, tubular flower pistil primordium differentiation phase. And the regression equations between flower bud differentiation phase and plant growth index were obtained. [ Conclusion ] Significant linear relationships exist between each growth index and its flower bud differentiation phase. And the most significant relationship is between days after seeding and flower bud differentiation phase.

关 键 词：百日草 花芽分化 生长指标 相关性分析 

分 类 号：S682.19[农业科学—观赏园艺]