Department of Agricultural Sciences, Viikki Plant Science Centre, 00014 University of Helsinki, Finland.
Department of Agricultural Sciences, Viikki Plant Science Centre, 00014 University of Helsinki, Finland.
Curr Opin Plant Biol. 2021 Feb;59:101972. doi: 10.1016/j.pbi.2020.09.006. Epub 2020 Dec 28.
The sunflower or daisy family, Asteraceae, comprises of approximately 10% of all angiosperm species. Their inflorescences form dense flower-like structures, pseudanthia or false flowers that may combine hundreds of individual flowers into a single structure. Recent data suggest that pseudanthia are analogs of single flowers not only morphologically but also at developmental and genetic level, and cannot merely be considered as condensed inflorescences. The large meristem size provides an advantage to study basic principles of patterning as well as inflorescence diversity in this evolutionary successful family. This knowledge has also practical importance in the commercially important crops of the family.
向日葵或雏菊科，菊科，约占所有被子植物物种的 10%。它们的花序形成密集的花状结构，假花序或假花，可能将数百个单个花朵组合成一个单一的结构。最近的数据表明，假花序不仅在形态上，而且在发育和遗传水平上都是单个花朵的类似物，不能仅仅被认为是密集的花序。大型分生组织大小为研究这个进化成功的家族中模式形成以及花序多样性的基本原理提供了优势。这些知识在该家族的商业重要作物中也具有实际意义。
