图4. 分别生长在两种钙生境中野生刺梨器官中及叶片气孔边缘的草酸钙晶体观察结果。A-F, 土壤交换性钙含量为5 938.12 mg·kg^-1的高钙生境中野生刺梨不同器官内及叶面的草酸钙晶体观察结果。A, 叶片组织中的草酸钙棱晶。B, 枝韧皮部中的草酸钙棱晶。C, 果实组织中的草酸钙针晶。D, 根组织中没有草酸钙晶体。E, 气孔边缘的草酸钙堆积体。F, 气孔外的草酸钙棱晶。G-L, 土壤交换性钙含量为406.41 mg·kg^-1的低钙生境中野生刺梨不同器官内及叶面的草酸钙晶体观察结果。G, 叶片组织中的草酸钙棱晶。H, 枝韧皮部中的草酸钙棱晶。I, 果实组织无草酸钙晶体。J, 根组织中无草酸钙晶体。K, 气孔周边无草酸钙堆积体。L, 在叶片表面及气孔周边无草酸钙晶体。

Fig. 4. Observation results of calcium oxalate crystals grown in the organs of Rosa roxburghii and at the stomata margins of leaves in two calcium conditions. A-F, Observation results of calcium oxalate crystals in different organs and leaves of R. roxburghii in high calcium conditions with soil exchangeable calcium content of 5 938.12 mg·kg^-1. A, Calcium oxalate prism in leaf tissue. B, Calcium oxalate prism in branch phloem. C, Calcium oxalate raphid in fruit tissue. D, Root tissue without calcium oxalate crystals. E, Calcium oxalate deposits at the edge of the stomata. F, Calcium oxalate prism outside stomata. G-L, Observation results of calcium oxalate crystals in different organs and leaves of R. roxburghii in low calcium conditions with soil exchangeable calcium content of 406.41 mg·kg^-1. G, Calcium oxalate prism in leaf tissue. H, Calcium oxalate prism in branch phloem. I, No calcium oxalate crystals were observed in fruit tissue. J, Root tissue without calcium oxalate crystals. K, No calcium oxalate deposits were observed around the stomata. L, No calcium oxalate crystals were observed around the stomata on the leaf surface.