Primordium

Root primordia (brown spots) as seen on the butt of a freshly cut pineapple crown intended for vegetative reproduction.

A primordium (/prˈmɔːrdiəm/; pl.: primordia; synonym: anlage) in embryology, is an organ or tissue in its earliest recognizable stage of development.[1] Cells of the primordium are called primordial cells. A primordium is the simplest set of cells capable of triggering growth of the would-be organ and the initial foundation from which an organ is able to grow. In flowering plants, a floral primordium gives rise to a flower.

Although it is a frequently used term in plant biology, the word is used in describing the biology of all multicellular organisms (for example: a tooth primordium in animals, a leaf primordium in plants or a sporophore primordium in fungi.[2])

  1. ^ MedicineNet.com
  2. ^ Noble, R.; T. R. Fermor; S. Lincoln; A. Dobrovin-Pennington; C. Evered; A. Mead; R. Li (2003). "Primordia Initiation of Mushroom (Agaricus bisporus) Strains on Axenic Casing Materials" (PDF). Mycologia. 95 (4): 620–9. doi:10.2307/3761938. ISSN 0027-5514. JSTOR 3761938. PMID 21148971.