Warrington, Ian James2025-08-202025-08-201988https://mro.massey.ac.nz/handle/10179/73396The research papers selected in this application for the Degree of Doctor of Science (Massey University) are based on original research in the field of environmental physiology, especially in the areas of spectral quality, photosynthetic photon flux density (PPFD - "light intensity"), photoperiod (daylength), and temperature (including freezing stress) and their effects on plant growth and development. The aim of this research has been to study how these factors of the environment influence plant growth form and function. The work has been carried out using a combination of controlled environment technology and field based research.en© The AuthorEcophysiologyThesis310303 Ecological physiology310806 Plant physiology