Comparative Anatomical Study on the woods of Ginkgo biloba var. epiphylla and Nomal Ginkgo

The studies on comparative morphology of tracheid in normal female Ginkgo and Ginkgo biloba var.epiphylla was conducted,through analyzing tracheid morphology and the radial variation trend of microfibril angle in normal wood of Ginkgo biloba var.epiphylla.The results showed that: the double wall thickness and the radial diameter of Ginkgo biloba var.epiphylla is significantly higher than that of normal Ginkgo,the microfibril angle of normal Ginkgo is bigger than that of Ginkgo biloba var.epiphylla.As for all indexes of tracheid,there were significant differences between earlywood and latewood in Ginkgo biloba var.epiphylla,which was same as that of normal Ginkgo.The radial variation trend of all tracheid morphological indexes of Ginkgo biloba var.epihylla was basically similar to that of normal Ginkgo.The comprehensive analysis indicated the wood density of Ginkgo biloba var.epiphylla was lower than that of normal ginkgo,while its texture was softer,but it grew faster than normal Ginkgo.