Croissance et régénération des racines de semis de pins laricio et de pins noirs en chambre climatisée et in situ

Abstract

RésuméNous avons observé la croissance aérienne et souterraine de jeunes pins noirs d'Autriche (Pintiv nigra ssp ll igrica ll . l' Host.) et

Influence of soil drying on leaf water potential, photosynthesis, stomatal conductance and growth in two black pine varieties

“…However, Corsican pine typically has two peaks in root growth. A low activity during spring till the end of June followed by a period of important root growth from July to September [2,43]. Based on these observations, we may suggest that the water stress was applied during the maximum root growth period, which could explain why the dry regime reduced belowground growth proportionally more than aboveground growth, causing a significant decrease in the R/S ratio.…”

Proceedings, combined Western Forest Nursery Council and Intermountain Nursery Association meeting : August 12-15, 1986, Tumwater, Washington /

“…Because of variability, the two peaks separated by a valley may not be distinguishable statistically, but the second peak especially makes sense biologically. Many workers have found an inverse correlation between root and shoot growth, with a particularly strong burst of root growth shortly before budbreak (Riedacker and Arbez 1983, Jenkinson 1980, El Nour and Riedacker 1984).…”