Seedcoat micromorphology of Impatiens (Balsaminaceae) from china
Seedcoat micromorphology of Impatiens (Balsaminaceae) from china
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DOI：
10.1111/j.1095-8339.2005.00436.x
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发表时间：
2005-10-01
影响因子：
2.4
通讯作者：
Küpfer, P
中科院分区：
文献类型：
--
作者：
Song, Y;Yuan, YM;Küpfer, P
对中国西南地区凤仙花属38种植物的种子进行了扫描电镜观察。种皮微形态多样性较高。根据种皮表皮细胞的结构和排列方式，特别是细胞排列方式和垂周细胞壁的隆起程度，可将种皮分为4种形态类型，即光滑型（laevigate）、网状型（recticulate）、垂周型（recticulate）和网状型（extensive）。其类型和类型都是独一无二的，每一种都只存在于一个物种中。另外两种类型是常见的，可以根据种皮的表皮排列的形状进一步分为亚类。对该属植物的种子大小、形状和种皮类型进行了描述。还讨论了种皮微形态的分类学和系统发育意义，并与现有的总体形态和分子数据进行了比较。(c)2005年，伦敦林奈学会。
Seeds of 38 species of Impatiens mostly from south-western China were observed by scanning electron microscopy. High diversity was found in seedcoat micromorphology. Based on the structure and ornamentation of epidermal cells of the seedcoat, particularly the pattern of the arrangement of the cells and the degree of elevation of the anticlinal cell walls, four morphological types can be distinguished, viz, laevigate, granulate, reticulate and protrusive. The laevigate type and granulate type are unique, each occurring in only one species. The other two types are common and can be further divided into subdivisions according to the shape of the epidermal ornamentation of the seedcoat. Descriptions of seed size, shape and seedcoat types are summarized for the genus. Taxonomic and phylogenetic implications of the seedcoat micromorphology are also discussed, in comparison with the available gross morphological and molecular data. (c) 2005 The Linnean Society of London.