prothallus
/prəʊˈθaləs
/noun (plural prothalli /prəʊˈθalʌɪ/ /prəʊˈθaliː/) Botany
The gametophyte of ferns and related plants.Here I re-examine the formation of the prothallus in a fern gametophyte in the context of a ‘whole-plant’ developmental response.
Derivatives
prothallial
- A consistent feature of every experiment that was undertaken in this study was that a sufficient quantity of white light was an absolute requirement for both prothallial and rhizoid development.
- The grain is empty because the body cell and prothallial nuclei have moved out along the pollen tube towards the archegonia.
Origin
Mid 19th century: modern Latin, from pro-2 'before, earlier' + Greek thallos 'green shoot'.