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报道了川东獐牙菜(Swertia davidiiFranch.)小孢子发生和雄配子体形成的过程。主要结果如下:花药四室,药壁发育为基本型;绒毡层异型起源,属于腺质型绒毡层,药室内具有的退化绒毡层核是早期该层细胞有丝分裂凸入药室中央并原位退化形成的;中层细胞3层;药室内壁退化;花药壁表皮宿存,细胞柱状伸长,纤维状加厚。小孢母细胞减数分裂为同时型,四分体排列方式主要为四面体形和左右对称型,少数为“T”形和十字交叉形;成熟花粉为2-细胞类型。
The process of microsporogenesis and male gametophyte formation in Swertia davidii Franch. The main results are as follows: anther four rooms, the development of the drug wall as the basic type; tapetum heterotypic origin, belonging to the glandular tapetum, degenerative tapetum nucleus is the early cells of this layer of cells protruding into the center and the original Bit degenerative formation; middle layer of three layers; degradation of the inner wall of the drug chamber; epidermal persistence of anther wall, cell columnar elongation, fibrous thickened. Melanosomes were meiosis into simultaneous types. The arrangement of tetrad is mainly tetrahedron and symmetrical with a few of T shape and cross. Mature pollen is of 2-cell type.