分别取适宜条件下和低温低光照强度条件下生长的玉米植株叶片徒手切片后立即用碘液染色置于显微镜下观察�现前者维管束鞘细胞有蓝色颗粒而 Template




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tomski分别取适宜条件下和低温低光照强度条件下生长的玉米植株叶片徒手切片后立即用碘液染色置于显微镜下观察�现前者维管束鞘细胞有蓝色颗粒而 coloring