Evolution and Taxonomic Significance of Seed Micromorphology in Impatiens (Balsaminaceae).

ABSTRACT: Impatiens is one of the most species-rich genera of angiosperms, with more than 1,000 species distributed in Eurasia and Africa. Previous studies have shown that seeds of Impatiens display enormous morphological diversity, and seed micromorphology may contribute to the classification of those species. However, the micromorphological seed coat characteristics of Impatiens seeds have not been systematically studied. In this study, we examined 117 Impatiens seeds from two subgenera and seven sections, and analyzed the seed characters of shape, primary ornamentation, secondary ornamentation, anticlinal cell wall, and periclinal cell wall. We discovered that, according to the different shapes of ornamentation, seed coat can be divided into three types, viz, reticulat

SUBMITTER: Song YX 

PROVIDER: S-EPMC8889038 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature