Claude Varlet-Grancher

TL;DR: De nombreux resultats concernant la relation entre the production de matiere seche totale et le rayonnement intercepte par la culture permettent de proposer un modele simple d'estimation de la production potentielle d'une espece donnee dans un lieu donne.

TL;DR: On rappelle les principales definitions and methodes de mesure utilisees dans les etudes du bilan radiatif solaire d'un couvert vegetal used fordert le rayonnement absorbe ou intercepte (produit de l'efficience and du rayonNement incident) par la culture au cours of son cycle.

TL;DR: Tillering responses to the light environment and to defoliation were studied in two populations of perennial ryegrass selected for contrasting leaf lengths to determine whether dierences in tillering responses between populations, as a result of management practices, aected their competitive ability.

TL;DR: Study of the relationship between leaf length and tillering in perennial ryegrass found selection fbr high LER and long lamina length, even though associated with reduced site filling in all treatments, did not necessarily result in reduced tiller number per plant.

TL;DR: Local light level and quality are the major factors driving photosynthetic acclimation and intra-canopy distribution of leaf characteristics, whereas local transpiration rate is of less importance.