学术
青藏高原东缘风毛菊亚属16种植物果皮微形态研究
王一峰[1,2] 王剑虹[1] 施海燕[1] 高宏岩[1]
[1]西北师范大学生命科学学院,兰州730070 [2]兰州大学干旱农业生态国家重点实验室,兰州730000
摘 要:
采用扫描电子显微镜对青藏高原东缘风毛菊亚属中的16种植物果实表皮微形态特征进行观察，结果表明：（1）果皮纹饰类型为：条纹型，有隔条纹型和网纹型。（2）根据种内个体间、组内种间以及组间的比较，认为在风毛菊亚属中，果实表皮显微特征在种内个体间比较稳定，变异很小；同组内种间表现出较大的相似性而不同组间存在着一定差异。说明在组和组下等级的分类学处理以及在系统位置和亲缘关系的探讨上，果实显微特征具有重要的分类学价值。[著者文摘]
文章出处:
《植物研究》-2008年1期 -38-42页
分 类 号:
文献标识码:
A
文章编号:
1673-5102（2008）01-0038-05
Micromorphological Features of Achene Surfaces of 16 Species of Subgen Saussurea in the Eastern of the Qinghai-Tibet Plateau
WANG Yi-Feng WANG Jian-Hong SHI Hai-Yan GAO Hong-Yan （ 1. College of Life Science, Northwest Normal University, Lanzhou 730070; 2. Key Laboratory of Arid Agroecology of Lanzhou University, the Ministry of National Education, Lanzhou 730000）
Abstract:
Micromorphological characteristics of achene surfaces were studied in 16 species belonging to 4 sections of Subgen Saussurea in Lipsh by the scanning electron microscope. These species were obtained from the eastern of the Qinghai-Tibetan plateau fringe. We got the results as follow, （ 1 ） According to micromorphological characteristics, the achene surface features can be divided into three types, striate ornamentation, septate striate ornamentation, and reticulate ornamentation. （2） The achene surface features were constant in infraspecific. At the same time, achene surface features of interspecies were similar in same section and distinctive in different ones. Therefore, it seemed to be useful to use micromorphological characteristics in Subgen Saussurea taxonomy both at species and sectional level.[著者文摘]
Key words:
Qinghai-Tibetan plateau ; Subgen Saussurea; achenes surface features ; classification
基金资助:
甘肃省教委（041-15）;甘肃省科技厅（3ZS041-A25-008）;甘肃省自然科学基金（3ZS051-A25-024）
更多>>免费文章
cqvip.com