广西林业科学2024，Vol.53Issue(6)：769-779,11.DOI:10.19692/j.issn.1006-1126.20240611
4科7属9种樟目植物茎导管分子及其穿孔板的比较
Comparison on Vessel Elements and Perforation Plates among 9 Plants Belonging to 7 Genera and 4 Families of Laurales
摘要
Abstract
In order to provide morphological data for wood identification and systematic classification of plants belonging to Laurales,morphological structures of secondary xylem vessel elements and perforation plates of 9 plants from Atherospermataceae,Monimiaceae,Hernandiaceae and Lauraceae were observed by scanning elec-tron microscopy.Differences in lengths and diameters of vessel elements were analyzed.Results showed that vessel elements of Atherospermataceae plants had scalariform perforation plates.Reticulate-scalariform perfo-ration plates were observed in Daphnandra tenuipes.Reticulate-scalariform perforation plates and reticulate perforation plates were observed in Laureliopsis philippiana.Vessel elements of Hernandiaceae plants only had simple perforation plates.Two different morphological types of vessel elements with truncated perforation plates were observed in Illigera rhodantha,with average length of vessel elements being shorter than those in Hernan-dia nymphaeifolia.Simple perforaton plates and scalariform perforation plates were observed in Cinnamomum plants belonging to Lauraceae.Vessel elements of Monimiaceae plants only had scalariform perforation plates.Average length of vessel elements of Doryphora sassafras was the longest,followed by Tambourissa purpurea.Average length of vessel elements of Cinnamomum burmannii was the shortest.Average diameter of vessel ele-ments of I.rhodantha was the largest,followed by H.nymphaeifolia.Average diameter of vessel elements of D.tenuipes was the smallest.Morphological and statistical analysis of vessel elements demonstrated taxonomic sig-nificance at family,genus and species levels.Perforation plates,diameters and lengths of vessel elements in Atherospermataceae and Monimiaceae were more similar to each other.Vessel elements of Hernandiaceae ex-hibited the highest level of evolutionary specialization.关键词
导管分子/穿孔板/樟目/香皮檫科/莲叶桐科/樟科/玉盘桂科Key words
vessel element/perforation plate/Laurales/Atherospermataceae/Hernandiaceae/Lauraceae/Moni-miaceae分类
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李红芳,薛成,边文晗,张小玲..4科7属9种樟目植物茎导管分子及其穿孔板的比较[J].广西林业科学,2024,53(6):769-779,11.基金项目
咸阳职业技术学院科研基金资助项目(2022BK07) （2022BK07）
