【摘 要】
：
在扫描电镜下观察了分布于南半球的柏科Cupressaceae单种属Pilgerodendron uviferum 及其相关类群的代表种Austrocedrus chilensis、Libocedrus plumosa和Papuacedrus papuan
【机 构】
：
Royal Botanic Gardens Kew Richmond Surrey TW9 3AB,中国科学院植物研究所系统与进化植物学重点实验室,湖南农业大学理学院
论文部分内容阅读
在扫描电镜下观察了分布于南半球的柏科Cupressaceae单种属Pilgerodendron uviferum 及其相关类群的代表种Austrocedrus chilensis、Libocedrus plumosa和Papuacedrus papuana叶角质层内外表面的微形态特征.发现Pilgerodendron uviferum 叶角质层外表面光滑,不具Florin环,而其余3个属的代表种均有明显的Florin环;且仅L. plumosa叶角质层外表面有乳状突起.观察结果支持传统的观点,即将P. uviferum作为独立的属;不支持基于DNA分析的结果,即将P. uviferum归并到Libocedrus属.发现Papuacedrus papuana叶角质层外表面有许多明显的小凹陷,与其相对应的叶角质层内表面有凹陷的小狭缝,该性状以前未见报道.
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