蓖麻种子结构的解剖和显微观察

郭学民,赵晓曼,徐珂,王芯蕊,张辰瑜,东方阳

Anatomy and microscopic observation of Ricinus communis seed structure

Xue-Min GUO,Xiao-Man ZHAO,Ke XU,Xin-Rui WANG,Chen-Yu ZHANG,Yang DONG-FANG

图5 希夫试剂染色的蓖麻胚的解剖结构 A: 子叶中部横切面, 示2片子叶被胚乳包围的格局; B: 图A的局部放大图, 示胚乳细胞中大量含有拟晶体和磷酸盐球形体的糊粉粒; C: 图A中胚乳边缘的局部放大图, 示外侧9~11层小型胚乳细胞和内侧大型的胚乳细胞, 且均含有糊粉粒; D: 图(A)中子叶中段横切面, 示含有糊粉粒的小型的子叶细胞、大型的胚乳细胞以及子叶和胚乳之间的粘液层(箭头); E: 胚根横切面, 示基本分生组织和原形成层; F: 图E的局部放大图, 示基本分生组织和原形成层细胞缺少糊粉粒; G: 胚轴横切面, 示皮层、原形成层和维管柱; H: 图G的局部放大图, 示皮层、原形成层和维管柱细胞缺少糊粉粒; I: 胚芽横切面, 示2个胚芽突起被包围在2片子叶主脉之间; J: 图I的局部放大图, 示胚芽细胞缺少糊粉粒; K: 距图I所在平面上面一点距离的子叶基部横切面, 示2片子叶主脉结构; L: 图K的局部放大图, 示主脉细胞缺少糊粉粒。图中圆圈代表外韧维管束。GM: 基本分生组织; PR: 原形成层; CX: 皮层; PL: 胚芽; VC: 维管柱。

Fig. 5 Anatomical structure of R. communis embryos stained with periodic acid Schiff (PAS) A: transection of middle cotyledon, showing the pattern of two cotyledons surrounded by endosperm; B: local enlargement of figure A, showing plenty of aleurone grains containing crystalloids and phosphate spheres in endosperm cells; C: local enlargement of endosperm margin in figure A, showing the outer 9-11 layers of small endosperm cells and the inner large ones containing aleurone grains; D: transection of the middle cotyledon in Figure A, showing small cotyledon cells and large endosperm ones, which contained aleurone grains, and the mucilaginous layer between the cotyledon and endosperm (arrow). E: transection of the radicle, showing ground meristem and procambia; F: local enlargement of figure E, showing ground meristem and procambia cells lacking aleurone grains; G: transection of the hypocotyle, showing cortex, procambia and vascular cylomnder; H: local enlargement of figure G, showing cortex, procambia and vascular cylomnder cells lacking aleurone grains; I: transection of plumule, showing two plumule protuberances surrounded by two main veins of cotyledons; J: local enlargement of figure I, showing plumule cells lacking aleurone grains; K: transection a short distance above the level in figure I in cotyledon base, showing anatomical structure of main veins of two cotyledons; L: cells in main veins lacking aleurone grains. The circles in the figure represented collateral vascular bundles. GM: ground meristem; PR: procambia; CX: cortex; PL: plumule; VC: vascular cylinder.