摘要
通过电镜扫描,观察和描述了12种(包括3品种)木兰属Magnolia植物(望春玉兰M.biondii,武当木兰M.sprengeri,青皮木兰M.viridula,白玉兰M.denudata,玉灯玉兰M.denudata‘Lamp’,星花木兰M.stellata,景新玉兰M.×soulangeana‘Jingxin’,美丽紫玉兰M.concinna,腋花玉兰M.axilliflora,长花玉兰M.×soulangeana‘Changhua’,紫玉兰M.liliflora,多瓣紫玉兰M.polytepala)的花粉形态。结果表明:12种(包括3品种)木兰属植物花粉粒均为舟形,具远极单沟,左右对称,异极,大小及外壁纹饰存在差异;根据Walker进化理论可知:望春玉兰、武当木兰、青皮木兰、白玉兰、玉灯玉兰以及景新玉兰属于较原始的种;美丽紫玉兰、星花木兰、长花玉兰、腋花玉兰、紫玉兰以及多瓣紫玉兰花粉属于较进化的种;同时还得出美丽紫玉兰、紫玉兰以及多瓣紫玉兰花粉形态基本一致;青皮玉兰与景新玉兰关系较近,但进化关系不同。
Classification of Magnolia is confusion,and the relationship of species is complex.Pollen morphological features of the Magnolia studied are compared and discussed on the basis of taxonomical concepts.We studied the pollen morphology characteristics of nine Magnolia（M.biondii,M.sprengeri,M.viridula,M.denudata,M.denudata ‘Lamp’,M.stellata,M.× soulangeana ‘Jingxin’,M.concinna,M.axilliflora,M.× soulangeana ‘Changhua’,M.liliflora,and M.polytepala） by scanning electron microscope（SEM）.All pollen grains of Magnolia were boat-shape,and monosulcate,bilateral symmetry.But the surface and size were different.Also,the pollen morphology of M.concinna,M.liliflora,and M.polytepala was similar.Base on the result,our study can conclude that M.biondii,M.sprengeri,M.viridula,M.denudata,M.denudata ‘Lamp’ and M.soulangeana ‘Jingxin’ are the primary;M.concinna,M.stellata,M.soulangeana ‘Changhua’,M.axilliflora,M.liliflora and M.polytepala are the evolutional species.In addition,the relationship of M.viridula and M.× soulangeana ‘Jingxin’ was close,they were different evolutionary types.
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2012年第3期394-400,共7页
Journal of Zhejiang A&F University
基金
浙江省科学技术农业面上资助项目(2008C32019)
浙江省花卉产业创新团队资助项目(2011R50034-09)
关键词
植物学
木兰属
花粉形态
聚类分类
botany
Magnolia
pollen morphology
cluster analysis
