Growth rings in the roots of temperate forbs are robust annual markers.

@article{vonArx2006GrowthRI,
  title={Growth rings in the roots of temperate forbs are robust annual markers.},
  author={Georg von Arx and Hansjoerg Dietz},
  journal={Plant biology},
  year={2006},
  volume={8 2},
  pages={
          224-33
        }
}
There is increasing interest in the analysis of annual growth rings in the secondary root xylem of perennial forbs (herb-chronology). Therefore, we need to verify whether these growth rings are always formed annually. To investigate the formation of root rings we performed common garden experiments at two distinct sites in Switzerland. We grew nine unrelated forb species from seed and subjected them to competition and clipping treatments. Anatomical developments in the roots of the individuals… Expand
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References

SHOWING 1-10 OF 51 REFERENCES
Comparative analysis of growth rings in perennial forbs grown in an Alpine restoration experiment.
TLDR
Results of the present study indicate that conclusions drawn from previous studies suggesting that growth rings in the roots of forb species are most likely formed annually are also valid for alpine plants. Expand
Annual rings in native and introduced forbs of lower Michigan, U.S.A.
TLDR
This study sampled established individuals of dicotyledonous perennial herbs in different habitats in lower Michigan and analyzed the main roots for the presence of growth rings in the secondary xylem, finding clearly demarcated growth rings among introduced species and in disturbed habitats. Expand
Growth Increment Patterns in the Roots of Two Alpine Forbs Growing in the Center and at the Periphery of a Snowbank
TLDR
The results suggest that effects of climatic fluctuations on plant growth can be amplified in snowbanks and that there may be favorable growth conditions initially at the periphery of a snowbank that are compensated for in the center of the snowbank, in the long run, by continuously low-competition growth conditions. Expand
Evidence for life history changes in high-altitude populations of three perennial forbs.
TLDR
Data for three ecologically distinct forb species provide evidence of a consistent shift toward more conservative and strongly constrained life histories at higher altitudes and indicate the possible importance of changes in selection pressures across strong environmental gradients on life history strategies within a single species. Expand
Age-determination of Dicotyledonous Herbaceous Perennials by Means of Annual Rings: Exception or Rule?
TLDR
Thirty-five herbaceous dicotyledonous perennial plant species, with permanent root systems, from 16 families, were examined for the presence of growth rings in the secondary root xylem, finding most showed ring zonations in the roots. Expand
Ecological Application of ‘Herbchronology’: Comparative Stand Age Structure Analyses of the Invasive PlantBunias orientalisL.
TLDR
The results suggest that age structure data obtained by ‘herbchronology’ can provide valuable supplementary information for studies on the population ecology of perennial dicotyledonous herbs with clearly-demarcated annual rings. Expand
Automated Image Analysis of Annual Rings in the Roots of Perennial Forbs
TLDR
An automated image analysis system (Root Xylem Analysis System [ROXAS]) is developed to improve the standardization and efficiency of conventional herb‐chronological analysis and may prove to be useful for efficient and reproduced analysis of annual growth increments in the roots of forbs and for investigations into their functional root anatomy. Expand
Analysis of interspecific competition in perennial plants using Life Table Response Experiments
TLDR
This study illustrates how informative it is to take account not only of the effect of competition upon vital rates but also of how different vital rates affect population growth rate. Expand
Plant Invasion Patches – Reconstructing Pattern and Process by Means of Herb-chronology
TLDR
Investigating population development of invasive forbs at the scale of a site or stand by using herb-chronology revealed different spatio-temporal patterns of population development that are consistent with distinct models of (local) plant spread, including diffuse invasion and front-like invasion patterns, and thus suggest different processes at work in the course of invasion. Expand
CLIMATIC FLUCTUATION CAUSES LARGE-SCALE SYNCHRONOUS VARIATION IN RADIAL ROOT INCREMENTS OF PERENNIAL FORBS
Although there is clear evidence that climate change influences ecological patterns and processes, scientists do not agree on the importance of climate in causing ecological change. Part of theExpand
...
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4
5
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