[Comparison of the botanic morphology and blooming characteristics of four cultivars of rose].
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.
Wang
Kang-cai
KC
Nanjing Agriculture University, Nanjing 210095 China. njwkc2002@sina.com
Tang
Xiao-qing
XQ
Sheng
Min-li
ML
Xu
Xiao-lan
XL
Fang
Zhen
Z
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