2021年12月7日 星期二
胡桃科 6 个树种花粉形态的扫描电镜观察
Scanning electron microscope observation on pollen morphology of six tree species in Juglandaceae
2016年 第25卷 第4期 页码[104-106]    下载全文[1.3MB]  
Abstract

Pollen morphology of six tree species belonging to four genera in Juglandaceae was observed by scanning electron microscope. The results show that pollens of six tree species are all single grain with medium size, the exine ornamentation is densely distributed by granular glyph with compound germinal apertures scattering or along equatorial; there are great differences in number of germinal apertures (average 3-22), number of germinal apertures of Juglans nigra Linn. is the most, while that of Carya illinoinensis (Wangenh.) K. Koch is the least. Polar axis length of pollen is 25. 00-37. 61μm, equatorial axis length is 21. 90 -36. 55  μm. The order of pollen size from small to big is Pterocarya stenoptera C. DC., Juglans cathayensis var. formosana (Hayata) A. M. Lu et R. H. Chang, Cyclocarya paliurus (Batal.) Iljinsk., J. nigra, J. regia Linn. and C. illinoinensis. Pollen shape of C. paliurus and P. stenoptera is flat pentagonal and flat polygonal, respectively, while that of other four tree species is flat spheroid. According to pollen size, exine ornamentation and germinal aperture morphology, evolutionary relationships of six tree species are discussed.

关键词胡桃科; 花粉; 形态特征; 扫描电镜; 演化地位
Key wordsJuglandaceae; pollen; morphological characteristics; scanning electron microscope; evolutionary status
作者毛霞a,b, 李晓春a,b, 刘晶晶a,b, 洑香香a,b
所在单位南京林业大学: a. 南方现代林业协同创新中心, b. 林学院, 江苏 南京 210037
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基金项目国家自然科学基金资助项目(31470637; 31270673); 江苏高校优势学科建设工程项目(PAPD)