Tectona grandis classified as Tectona plant of Verbenaceae is one of the most valuable timber tree species in the world.

柚木为马鞭草科柚木属植物，是世界上最珍贵的用材树种之一。

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The vessel elements of secondary xylem in Tectona grandis are observed and studied by cell image analysis system and micrography.

运用细胞图象分析系统及显微照相的方法对柚木次生木质部导管分子进行了观察研究。

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Tectona grandis is native to south and southeast Asia, mainlyIndia, Indonesia, Malaysia, Thailand and Burma, but is naturalized and cultivated in many countries in Africa and the Caribbean.

柚木原产于南亚和东南亚，主要在印度，印度尼西亚、马来西亚、泰国和缅甸，但在非洲和加勒比地区许多国家培育种植。

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