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泡桐属(Paulownia)为我国重要速生用材树种之一,辽宁、华北、台湾、华南、西南、西北均有分布。近年来我国大面积地进行了种植,国外亦纷纷试种或引种~([4])。属内的泡桐(P.fortunei(Seem.)Hemsl.)在广东有天然分布,亦是广东的速生树种之一,天然林的树株,其直径年增长往往达3厘米以上。本文试图以一年生泡桐苗的茎部次生木质部解剖特征,探索其木材组织和细胞形态的变化幅度以及个体差异,从而为早期评价材质、筛选优良个体以及早期利用提供依据。
Paulownia (Paulownia) is one of the important species of fast-growing timber in China. It is distributed in Liaoning, North China, Taiwan, South China, Southwest China and Northwest China. In recent years, China has planted a large area, and many foreign countries have also experimented or introduced some species ([4]). The genus P.fortunei (Seem.) Hemsl. Is naturally distributed in Guangdong and is also one of the fast-growing tree species in Guangdong. The tree species of natural forests tend to grow more than 3 centimeters in diameter annually. In this paper, the anatomical characteristics of secondary xylem in stems of annual Paulownia seedlings were explored to explore their changes in wood tissue and cell morphology as well as their individual differences, which provided the basis for early evaluation of materials, selection of fine individuals and early utilization.