| 鹅掌楸属次生木质部解剖特征及自然种系统演化 |
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| 引用本文： | 王丰,潘彪,唐菁,伊东隆夫.鹅掌楸属次生木质部解剖特征及自然种系统演化[J].安徽农业大学学报,2014,41(3):451. |
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| 作者姓名： | 王丰 潘彪 唐菁 伊东隆夫 |
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| 作者单位： | 南京林业大学材料科学与工程学院,南京210037;南京林业大学材料科学与工程学院,南京210037;京都大学 |
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| 基金项目： | 江苏高校优势学科建设工程项目(PAPD)资助 |
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| 摘 要： | 比较研究了鹅掌楸属(Liriodendron)中国鹅掌楸、北美鹅掌楸和杂交鹅掌楸3个树种次生木质部的显微构造。经方差分析,3个树种间导管分子、木纤维、轴向薄壁组织和木射线组织等解剖特征存在极显著差异,杂交鹅掌楸次生木质部结构兼具亲本特征。首次发现中国鹅掌楸中存在单穿孔导管,约占4%。中国鹅掌楸较北美鹅掌楸导管分子短、导管端壁穿孔板横隔数少、弦切面木射线组织的宽度、高度小以及轴向薄壁细胞束的细胞个数少。北美鹅掌楸与中国鹅掌楸相比具有更多的原始特征,中国鹅掌楸较北美鹅掌楸进化。
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| 关 键 词： | 鹅掌楸属 次生木质部 解剖特征 系统演化 |
Comparative study on secondary xylem structure in Liriodendron and its implication on phylogeny |
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| WANG Feng,PAN Biao,TANG Jing and Takao ITOH.Comparative study on secondary xylem structure in Liriodendron and its implication on phylogeny[J].Journal of Anhui Agricultural University,2014,41(3):451. |
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| Authors: | WANG Feng PAN Biao TANG Jing and Takao ITOH |
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| Institution: | College of Materials Science and Engeering, Nanjing Forestry University, Nanjing 210037,College of Materials Science and Engeering, Nanjing Forestry University, Nanjing 210037,College of Materials Science and Engeering, Nanjing Forestry University, Nanjing 210037 and College of Materials Science and Engeering, Nanjing Forestry University, Nanjing 210037; Kyoto University |
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| Abstract: | A comparative study on secondary xylem structure among three species in Liriodendron (Liriodendron chinensis, L. tulipifera and L. chinensis×tulipifera) was carried out. Average number of bars in scalariform perforation, the length of vessel elements, the number of length and width of ray tissue and the cell number of parenchyma strands were significantly different among three species. The most features of secondary xylem structure of L. chinensis×tulipifera were between two natural species. We first found about 4% vessel element with simple perforation in L. chinensis. Compared with L.chinensis, there were more evolutional features in L. chinensis including shorter vessel member length, less number of bars presented on scalariform perforation, less ray length and width and cell number in parenchyma strands. |
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| Keywords: | Liriodendron secondary xylem anatomical features phylogeny |
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