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6 番红固绿双重染色的蓖麻胚的解剖结构 A和B: 种子中部的横切面; C~F: 垂直于子叶所在平面的纵切面。A: 子叶中段横切, 示2片子叶分离、子叶与胚乳通过粘液层(箭头)相互连接的格局, 以及大型胚乳细胞和小型子叶细胞均含糊粉粒; B: 胚乳横切面, 示含大量糊粉粒的胚乳细胞; C: 去大部分子叶的胚的纵切面, 示部分子叶、胚芽、胚轴和胚根; D: 图C中胚根纵切面, 示原表皮、基本分生组织和原形成层的分化格局; E: 图C中胚轴的纵切面, 示表皮、皮层和维管柱的分化格局; F: 胚芽和部分子叶的纵切面, 示胚芽和联系胚轴与子叶的维管束(箭头)。

Fig. 6 Anatomical structure of R. communis embryos stained with saffron and green fixation A and B: the transverse section of the middle part of the seed; C-F: longitudinal section perpendicular to the plane of the cotyledon. A: transection of the middle cotyledon, showing the patterns of cotyledon separation, cotyledon-endosperm interconnection through the mucilaginous layer (arrows), large endosperm cells and small cotyledon ones with aleurone grains; B: transection of the endosperm, showing endosperm cells containing large amounts of aleurone grains; C: longitudinal section of embryos with most cotyledons removed, showing partial cotyledon, plumule, hypocotyle and radicle; D: longitudinal section of the radicle in figure C, showing differentiation pattern of primary epidermis, ground meristem and procambium; E: longitudinal section of the hypocotyle in figure C, showing differentiation pattern of epidermis, cortex and vascular cylomnder; F: longitudinal section of plumule and partial cotyledon, showing the plumule and vascular bundles (arrows) connecting the hypocotyle and cotyledon.