Vulnerability to cavitation, hydraulic efficiency, growth and survival in an insular pine (Pinus canariensis)
نویسندگان
چکیده
منابع مشابه
Vulnerability to cavitation, hydraulic efficiency, growth and survival in an insular pine (Pinus canariensis).
BACKGROUND AND AIMS It is widely accepted that hydraulic failure due to xylem embolism is a key factor contributing to drought-induced mortality in trees. In the present study, an attempt is made to disentangle phenotypic plasticity from genetic variation in hydraulic traits across the entire distribution area of a tree species to detect adaptation to local environments. METHODS A series of t...
متن کاملPlasticity in Vulnerability to Cavitation of Pinus canariensis Occurs Only at the Driest End of an Aridity Gradient
Water availability has been considered one of the crucial drivers of species distribution. However, the increasing of temperatures and more frequent water shortages could overcome the ability of long-lived species to cope with rapidly changing conditions. Growth and survival of natural populations adapted to a given site, transferred and tested in other environments as part of provenance trials...
متن کاملPopulation divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae).
A heteroblastic (or vegetative phase) change is an abrupt manifestation in the general heteroblastic development during the ontogeny of plants. The Canary Island pine undergoes an especially marked and delayed heteroblastic change, including both the formation of secondary needles on dwarf shoots and the onset of preformed growth. To assess genetic and environmental effects on the heteroblastic...
متن کاملXylem conductivity and vulnerability to cavitation of ponderosa pine growing in contrasting climates.
We examined the effects of increased transpiration demand on xylem hydraulic conductivity and vulnerability to cavitation of mature ponderosa pine (Pinus ponderosa Laws.) by comparing trees growing in contrasting climates. Previous studies determined that trees growing in warm and dry sites (desert) had half the leaf/sapwood area ratio (A(L)/A(S)) and more than twice the transpiration rate of t...
متن کاملHydraulic responses to height growth in maritime pine trees
As trees grow taller, decreased xylem path conductance imposes a major constraint on plant water and carbon balance, and is thus a key factor underlying forest productivity decline with age. The responses of stomatal conductance, leaf area: sapwood area ratio ( A L : A S ) and soil–leaf water potential gradient ( DY S–L ) to height growth were investigated in maritime pine trees. Extensive meas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annals of Botany
سال: 2013
ISSN: 1095-8290,0305-7364
DOI: 10.1093/aob/mct084