桂花切花品种筛选

对17个桂花Osmanthus fragrans品种的小花花冠径、着花繁密程度、花色、花香程度、花枝形态等特点进行调查研究。选择生长正常的健康植株采样,其中繁殖器官样本数为10,营养器官样本数为20。根据切花分级标准与桂花的观赏特点初步提出了桂花切花品种筛选的分类标准,对供试桂花品种进行观赏价值的综合评判。结果表明:厚瓣金桂‘HoubanJingui’,柳叶金桂‘Liuye Jingui’,金桂‘Jingui’等为色、香、形俱佳的一级切花品种,大花金桂‘Dahua Jingui’,硬叶金桂‘Yingye Jingui’,丹桂‘Dangui’等为二级切花品种,早金桂‘Zao Jingui’,白碧金桂‘Baibi Jingui’,橙黄金桂‘Chenghuang Jingui’等为三级切花品种,而大叶金桂‘Daye Jingui’与四季桂‘Sijigui’不适宜作为切花品种。表4参12

Study on selecting cut-flower cultivars of Osmanthus fragrans

The classifying criteria for selecting cut-flower cultivars of Osmanthus fragrans from 17 cultivars were firstly studied.The values of corolla diameter,density,color and scent of flower,shape of branch,etc wre used.The samples were taken from the healthy trees of O.fragrans.The amount for reproductive organ was 10 and that for vegetative organ was 20.The classifying criteria for cut-flower cutivars of O.fragrans were initially established according to both of the common grade standard of cut-flowers and the ornamental value of O.fragrans.The results showed that `Houban Jingui',`Liuye Jingui',`Jingui' and so on were ramked the primo grade iwth fine color,scent and shape `Dahua jingui',`Yingye Jingui',`Dangui' etc.were ranked the second grade.`Zao Jingui',`Baibi Jingui',`Chenghuang Jingui' etc.belonged to the third grade,whereas,`Daye Jingui' and `Sijigui' were not fit for application of cut-flowers.