Pollen is one of the more conservative organs in plant phylogeny. The degree of pollen variation often marks the level of evolution of this group, and is the most valuable evidence in phylogenetic research. The Annona family is a primitive group of Magnoliaceae, with a high degree of diversity between and within the genus. Among them, the diversity of pollen morphology is the most abundant, showing more variation than any other family, and is in the path of angiosperm pollen evolution. Very critical position.
Dr. Fengxia Xia of the Plant Science Research Center of the South China Botanical Garden of the Chinese Academy of Sciences and Dr. Louis P. Ronse de Craene of the Royal Botanic Garden of Edinburgh collaborated to study the fresh pollen morphology and structure of the family, and obtained a more complete understanding of the pollen morphology of the family The concept of analysing the reasons for the different understandings of the inner layer of the outer wall, combined with the results of molecular systematic studies, reveals the systematic taxonomic significance of pollen morphological features.
The research results have been published in the international academic journal Plant Systematics and Evolution (Volume 299, Issue 1, January 2013).
Pollen shape and outer Wall Decoration
Structure of the pollen wall
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