Modular structure of inflorescences Hydrangea L.: flowering and pollen quality. D.V. NEKHAYCHENKO

Abstract

Modular structure of inflorescences Hydrangea L.: flowering and pollen quality. D.V. NEKHAYCHENKO (Botanical Garden-Institute, FEB RAS, Vladivostok).

Research results of inflorescences structure of Hydrangea from the point of view of the modular theory of plant organization, which is a modern stage in the development of Goethe’s morphology, are presented. There are three types of modules that demonstrate the similarity of two physiognomically different inflorescences. It has been found that the blooming of flowers occurs in parallel in all the modules in a basipetal order, which confirms the cymose nature of the inflorescence characteristic of thyrse. Analysis of pollen quality depending on the position of flowers in the inflorescence structure confirmed the order of formation and modularity of the inflorescence structure. It is proved that the quality of pollen in flowers that bloom first and are terminal for the main modules is higher than in flowers of subsequent branching orders.