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中国栗属和三棱栎属木材比较解剖学研究
吴树明; 肖绍琼;   
1.南开大学生物系;2.西南林学院 天津;3.昆明
摘要:
本研究在光学显微镜和扫描电子显微镜下观察了我国产栗属(Castanea Mill.)和三棱栎属(Trigonobalanus Forman)木材的解剖学特征。结果表明,在栗属中,木材为环孔材。锥栗(C.henryi Rehd.et Wils.)和板栗(C.mollissima B1.)早材比例小,晚材比例大:而茅栗(C.seguinii Dode)则相反。在三棱栎(Trigonobalanus doichangensis(A.Cam us)Forman)中,木材管孔沿径向溪流状排列,为辐射孔材。在栗属中,木材的导管分子多为单穿孔。在晚材导管分子中,偶见梯状穿孔板。而在三棱栎中,未见梯状穿孔板。此外,在两属木材中,尚存在某些其它的差异。
关键词:  栗属  三棱栎属  生长轮  导管  纤维  环管管胞  轴向薄壁组织  木射线  
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