Responses of hybrid poplar clones and red maple seedlings to ambient O3 under differing light within a mixed hardwood forest

2004 ◽  
Vol 130 (2) ◽  
pp. 199-214 ◽  
Author(s):  
C. Wei ◽  
J.M. Skelly ◽  
S.P. Pennypacker ◽  
J.A. Ferdinand ◽  
J.E. Savage ◽  
...  
Keyword(s):  
Hybrid Poplar ◽  
Hardwood Forest ◽  
Red Maple ◽  
Poplar Clones

scholarly journals Performance of hybrid poplar clones in short rotation coppice in Mediterranean environments: analysis of genotypic stability

GCB Bioenergy ◽  
2013 ◽  
Vol 6 (6) ◽  
pp. 661-671 ◽  
Author(s):  
Hortensia Sixto ◽  
Paula Gil ◽  
Pilar Ciria ◽  
Francesc Camps ◽  
Mario Sánchez ◽  
...  
Keyword(s):  
Hybrid Poplar ◽  
Short Rotation Coppice ◽  
Short Rotation ◽  
Mediterranean Environments ◽  
Poplar Clones ◽  
Genotypic Stability

Influence of light fleck and low light on foliar injury and physiological responses of two hybrid poplar clones to ozone

2004 ◽  
Vol 130 (2) ◽  
pp. 215-227 ◽  
Author(s):  
C. Wei ◽  
J.M. Skelly ◽  
S.P. Pennypacker ◽  
J.A. Ferdinand ◽  
J.E. Savage ◽  
...  
Keyword(s):  
Physiological Responses ◽  
Hybrid Poplar ◽  
Foliar Injury ◽  
Low Light ◽  
Poplar Clones ◽  
Two Hybrid

Changes in specific leaf area and photosynthetic nitrogen-use efficiency associated with physiological acclimation of two hybrid poplar clones to intraclonal competition

2011 ◽  
Vol 41 (7) ◽  
pp. 1465-1476 ◽  
Author(s):  
Lahcen Benomar ◽  
Annie DesRochers ◽  
Guy R. Larocque
Keyword(s):  
Leaf Area ◽  
Specific Leaf Area ◽  
Populus Trichocarpa ◽  
Hybrid Poplar ◽  
Growing Seasons ◽  
Poplar Clones ◽  
Use Efficiency ◽  
Intraclonal Competition ◽  
Physiological Acclimation ◽  
Two Hybrid

Photosynthesis is the most important process driving productivity, and its acclimation to intraclonal competition is not well understood in hybrid poplars. The aim of this study was to examine the physiological response of the crown of two hybrid poplar clones, BT747215 ( Populus balsamifera L. × Populus trichocarpa Torr. & A. Gray) and MB915319 ( Populus maximowiczii A. Henry × P. balsamifera ), to intraclonal competition. We measured light-saturated photosynthesis (Amax), leaf N content on an area basis (Narea), specific leaf area (SLA), and photosynthetic N-use efficiency (PNUE) for three successive growing seasons on trees planted at three spacings (1 m × 1 m, 3 m × 3 m, and 5 m × 5 m). Crowns were sampled at 10 locations corresponding to vertical and horizontal subdivisions. Significant changes took place at the crown level in the closest spacing (1 m × 1 m) compared with the wider spacings (3 m × 3 m and 5 m × 5 m): (i) 30% decrease in Narea, (ii) 20% increase in SLA, and (iii) 40% increase in PNUE. The slope of the Amax–Narea curve was greatest in the closest spacing, indicating a greater change in Amax per unit change in Narea. The two hybrid poplar clones had a similar morphophysiological response to changes of spacing. Both clones showed physiological acclimation of their foliage in response to intraclonal competition through modulation of SLA and PNUE.

Energy feedstock characteristics of willow and hybrid poplar clones at harvest age

2003 ◽  
Vol 25 (6) ◽  
pp. 571-580 ◽  
Author(s):  
P.J. Tharakan ◽  
T.A. Volk ◽  
L.P. Abrahamson ◽  
E.H. White
Keyword(s):  
Hybrid Poplar ◽  
Poplar Clones
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