The Cost of Apical Dominance in White Pine (Pinus strobus L.): Growth in Multi-Stemmed Versus Single-Stemmed Trees

1996 ◽  
Vol 123 (4) ◽  
pp. 268 ◽  
Author(s):  
Elizabeth A. Chamberlin ◽  
Lonnie W. Aarssen
Keyword(s):  
Apical Dominance ◽  
Pinus Strobus ◽  
White Pine ◽  
The Cost

White pine (Pinus strobus L.) regeneration dynamics at the species’ northern limit of continuous distribution

New Forests ◽  
2013 ◽  
Vol 45 (1) ◽  
pp. 131-147 ◽  
Author(s):  
Yadav Uprety ◽  
Hugo Asselin ◽  
Yves Bergeron ◽  
Marc J. Mazerolle
Keyword(s):  
Continuous Distribution ◽  
Pinus Strobus ◽  
White Pine ◽  
Northern Limit ◽  
Regeneration Dynamics

Cost of apical dominance in two monocarpic herbs, Erysimum strictum and Rhinanthus minor

2000 ◽  
Vol 78 (5) ◽  
pp. 591-599 ◽  
Author(s):  
Ari-Pekka Huhta ◽  
Juha Tuomi ◽  
Pasi Rautio
Keyword(s):  
Apical Dominance ◽  
Fruit Production ◽  
Severe Damage ◽  
Positive Effects ◽  
Vegetative Biomass ◽  
Branch Development ◽  
Rhinanthus Minor ◽  
Delayed Flowering ◽  
The Cost ◽  
Number Of Branches

Apical dominance is advantageous in conditions favoring rapid growth in height and unbranched architecture. The cost of apical dominance, on the other hand, should be expressed in conditions where fecundity increases along with an increasing number of branches. Apical damage can be used to measure such costs: when suppressed meristems are released from apical inhibition, the vegetative and reproductive productivity of initially unbranched plants should increase owing to the regrowth and increased branch development following damage. We studied these regrowth responses in two monocarpic herbs, Erysimum strictum P. Gaertn., B. Mey., and Scherb. and Rhinanthus minor L., after both apical damage (10% of the shoot cut) and more extensive damage (50 and 75% cutting). Both species tolerated apical damage, although severe damage had detrimental effects on the performance of both, especially R. minor. Apical damage had positive effects on most of the measured performance parameters of Erysimum. However, the success of seed germination collapsed, presumably due to delayed flowering and less successful pollination. The response was parallel in Rhinanthus; apical damage affected neither the vegetative biomass nor fecundity, but heavier damage, especially 75% clipping, led to severe reductions in most performance measures. The differences in regrowth responses are presumably due to the different habitat requirements of the species. Rhinanthus prefers relatively dense vegetation and starts to branch and produce flowers after a certain threshold in height has been reached, whereas Erysimum prefers gaps in vegetation. In this species, unbranched architecture may be favored in closed vegetation and branched architecture in less competitive habitats. In both species, fruit production correlated positively with the number of branches in both control and clipped plants, which is consistent with the assumption of the cost of apical dominance.Key words: apical dominance, competition, damage, meristem, overcompensation, regrowth.

scholarly journals AIR-LAYERING OF EASTERN WHITE PINE (Pinus strobus L.)

1959 ◽  
Vol 35 (1) ◽  
pp. 19-21 ◽  
Author(s):  
J. L. Farrar ◽  
W. D. McJannet
Keyword(s):  
Pinus Strobus ◽  
White Pine ◽  
Eastern White Pine

Diseases of Pinus strobus (White Pine)

2021 ◽  
pp. 293-296
Author(s):  
S. Parthasarathy ◽  
G. Thiribhuvanamala ◽  
P. Muthulakshmi ◽  
K. Angappan
Keyword(s):  
Pinus Strobus ◽  
White Pine

THE EFFECT OF SOLAR RADIATION ON CONE INSECTS OF EASTERN WHITE PINE (PINUS STROBUS) IN THE FREDERICTON AREA, NEW BRUNSWICK

1971 ◽  
Vol 103 (4) ◽  
pp. 605-609 ◽  
Author(s):  
J. A. Odera
Keyword(s):  
High Temperature ◽  
Solar Radiation ◽  
New Brunswick ◽  
Correlation Coefficient ◽  
Pinus Strobus ◽  
White Pine ◽  
Average Correlation ◽  
Ground Temperatures ◽  
Internal Cone ◽  
Insect Mortality

AbstractInternal cone temperatures recorded in the mornings and in the afternoons demonstrated marked differences between sunny and shaded sites. Analysis of variance confirmed differences between treatment as highly significant. High and low cone temperatures coincided with high and low ground temperatures. The average correlation coefficient relating cone and ground temperatures was highly significant, while that for cone temperatures and cone size was non-significant.Heavy insect mortality occurred in cones exposed to direct solar radiation but mortality remained relatively low in the cones left in the shade. The greatest high-temperature mortality occurred during summer between late June and early August.

Sign in / Sign up

Export Citation Format

Share Document