title: [Comparison of the botanic morphology and blooming characteristics of four cultivars of rose].
abstract: OBJECTIVE
  To establish identifying method for further development and utilization by studying botanic morphology and blooming characteristics of four varieties of roses in Jiangsu province.
  
  
  METHODS
  Flower-bud and flower-form were observed by dissection and plant modality and blooming process were investigated.
  
  
  CONCLUSIONS
  The flower form and plant modality was obviously different among the 4 varieties of roses. The process of differentiation of flower-bud could be divided into five stages: the transformation of nutritive growth cone, the occurrence and development of sepal, formation of petal primordium, formation of pistil and stamen. The blooming process was made up of flower-bud period, display-petal period, initiating blooming period, blooming period, withering period and corresponding biological marks.
authors.affiliation: Nanjing Agriculture University, Nanjing 210095 China. njwkc2002@sina.com
authors.forename: Kang-cai
authors.initials: KC
authors.lastname: Wang
authors.forename: Xiao-qing
authors.initials: XQ
authors.lastname: Tang
authors.forename: Min-li
authors.initials: ML
authors.lastname: Sheng
authors.forename: Xiao-lan
authors.initials: XL
authors.lastname: Xu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Fang
mesh_terms: D017753:Ecosystem; D035264:Flowers / Q000033:anatomy & histology / Q000254:growth & development*; D009024:Morphogenesis; D009812:Odorants; D010946:Plants, Medicinal / Q000033:anatomy & histology / Q000145:classification / Q000254:growth & development; D027826:Rosa / Q000033:anatomy & histology / Q000145:classification / Q000254:growth & development