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本文介绍了扫描电镜和透射电镜下交叉场纹孔在管胞一侧和射线薄壁细胞一侧的形态特征及其变化细节。扫描电镜下管胞胞腔一侧交叉场纹孔口周围形成的光晕。在柳杉(Cryptomerisfortunei Hooibrenk ex Otto et Dietr.)木材中首次看到管胞一侧的交叉场纹孔膜具辐射状排列的微纤丝或束;西藏长叶松(Pinus roxburghii Sarg.)的松木型纹孔膜的边缘具辐射状排列的微纤丝束。此外,尚在臭冷杉[Abies nephrolepis(Trautv.)Maxim]木材中观察到一种特殊的纹孔口外展的杉木型纹孔,并在冷杉属(Abies)其他种、落叶松属(Larix)一些种及红皮云杉(Picea koraiensis Nakai)等木材的交叉场纹孔中也看到。
In this paper, the morphological characteristics and the changes of the cross-pits in the tracheid and parenchyma cells under scanning electron microscopy and transmission electron microscopy are introduced. Scanning electron microscopy tracheid cell side of the cross field pattern hole formed around the halo. For the first time in Cryptomeris fortunei Hooibrenk ex Otto et Dietr., The cross-pits on the tube-cell side were seen to have a radial arrangement of microfibrils or bundles of pine; Pinus roxburghii Sarg. The edge of the pitted membrane has a radial arrangement of microfibrils. In addition, a special stomatal-lanceolate fir-shaped pore was observed in the wood of Abies nephrolepis (Trautv.) Maxim and was found in other Abies species, Larix Also seen in the cross field holes of wood such as Picea koraiensis Nakai.