大花黄牡丹枝条二次发育特点的观察  

Secondary Branches Development of Paeonia ludlowii

作　　者：袁涛[1] 陈庭巧 唐英 YUAN Tao;CHEN Tingqiao;TANG Ying(School of Landscape Architecture,Beijing Forestry University,National Engineering Research Center for Floriculture,Beijing Laboratory of Urban and Rural Ecological Environment,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education,Beijing Key Laboratory of Ornamental Plants Germplasm Innovation&Molecular Breedings Beijing 100083,China)

机构地区：[1]北京林业大学园林学院,国家花卉工程技术研究中心,城乡生态环境北京实验室,林木花卉遗传育种教育部重点实验室,花卉种质创新与分子育种北京市重点实验室,北京100083

出　　处：《园艺学报》2021年第1期117-126,共10页Acta Horticulturae Sinica

基　　金：国家林草局行业标准项目(2018-LY-054);北京园林绿化增彩延绿科技创新工程项目(2019-KJC-02-10)。

摘　　要：在西藏林芝地区和河南芍药科迁地保护中心观察了中国特有植物大花黄牡丹(Peaonia ludlowii)的枝条发育。结果表明:大花黄牡丹春季花枝在花期前后第2次萌发枝条,二次枝秋季并不"枯枝退梢",这是区别牡丹组其他种和栽培品种的特征之一。二次枝顶芽分化成具花、叶原基和腋芽原基的复合芽,从分化起始到开花结实历经3个年周期,约17~20个月。二次枝的生长、顶芽分化与种实发育同步并可增加群落冠层高度。非采挖性砍伐有利于枝条更新。Branches development of Peaonia ludlowii was observed in Nyingchi,Tibet and Henan Paeoniaceae Ex-situ Conservation Center. The results showed that:it developed secondary branches around florescence in spring,the bud-above-part of the secondary branches would not dried in autumn,which is one of the characteristics that distinguishes it from other species and cultivars of Paeonia Sect. Moutan. The terminal buds on secondary branches differentiated into composite buds with floral primordium,leaf primordium and axillary primordium. A composite buds takes 3-annual cycles from the beginning of differentiation to blossoms and frucitification,about 17–20 months actually. The secondary branches development and the terminal buds differentiation were synchronized with the follicles,simultaneously increased the canopy height. The not-excavated-harvest was beneficial to branches regeneration.

关 键 词：牡丹 二次枝 枝芽发育 复合芽 

分 类 号：S685.11[农业科学—观赏园艺]