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棉 (Goosypiumhirsutum)茎次生木质部的切向纵切片 ,用番红与固绿两种染液对染 ,使导管分子、管胞和细长的木纤维等死细胞、木质化增厚的细胞壁染成红色 ,而由生活细胞组成的射线 ,为 1～ 4列横卧的薄壁细胞 ,可被固绿液将其纤维素细胞壁和细胞质染成蓝绿色 ,由于这些细胞在茎
The tangential longitudinal section of the secondary xylem of the stem of Goosypium hirsutum was dyed with both safranin and solid green dye, dead cells such as ductal molecules, tracheids and slender wood fibers, thickened lignified cell walls Red, while the rays of living cells, 1 to 4 lying horizontal thin-walled cells can be solid green liquid to dye its cellulose cell wall and cytoplasm blue-green, because these cells in the stem