scholarly journals Expression of abscisic and gibberellic acid signalling factors in Fagus sylvatica L. seeds during dormancy breaking and germination

Dendrobiology ◽  
2019 ◽  
Vol 81 ◽  
pp. 22-30
Author(s):  
Aleksandra Maria Staszak ◽  
Emilia Pers-Kamczyc ◽  
Ewelina Anna Klupczyńska ◽  
Tomasz Andrzej Pawłowski
Keyword(s):  
Gibberellic Acid ◽  
Fagus Sylvatica ◽  
Dormancy Breaking ◽  
Fagus Sylvatica L

Descendances maternelles de hêtre tortillard (Fagus sylvatica L. var. tortuosa Pépin); développement au cours des quatre premières années: I. fertilité, vigueur et apparition du phénotype tortillard

1998 ◽  
Vol 76 (1) ◽  
pp. 12-22
Author(s):  
B Thiébaut ◽  
O Garniaux ◽  
B Comps ◽  
C Muller
Keyword(s):  
Fagus Sylvatica ◽  
Germination Rate ◽  
European Beech ◽  
Dormancy Breaking ◽  
Experimental Conditions ◽  
Empty Seed ◽  
Fagus Sylvatica L ◽  
Typical Shape ◽  
Second Year ◽  
One Year

In Verzy forest (near Reims, France), seeds were sampled from some tortillard beeches (Fagus sylvatica L. var. tortuosa Pépin) after free pollination. After a dormancy breaking treatment performed in laboratory, seeds were sown in nursery and seedlings were cultivated for 4 years. The purpose of this study is to examine the fertility of tortillard beech and the occurrence of its phenotype during the first years of development. According to our experimental conditions, full and empty seed ratios, germination rate, and seedling annual survival rate were not significantly different from those reported for the European beech in literature. Among 486 tortillard maternal descendants, after 4 years, 25% of the individuals showed a special shape, characterized by reiterations, and could be considered as "tortillards". This phenotype appeared progressively during the second year of seedling development. The number of tortillards increased from one year to the next and their typical shape became more pronounced until they were 4 years old. These results show that the tortillard variety is no less fertile and vigorous than the European beech. Key words: Fagus sylvatica var. tortuosa, morphology, growth, fertility, strength.

Proteins and polyamines during dormancy breaking of European beech (Fagus sylvatica L.) seeds

2003 ◽  
Vol 25 (4) ◽  
pp. 423-435 ◽  
Author(s):  
Zofia Szczotka ◽  
Tomasz Pawłowski ◽  
Kazimierz Krawiarz
Keyword(s):  
Fagus Sylvatica ◽  
European Beech ◽  
Dormancy Breaking ◽  
Fagus Sylvatica L

scholarly journals Effect of gibberellic acid and ethephon on the germination of European beech dormant and chilled beechnuts

2010 ◽  
Vol 56 (No. 9) ◽  
pp. 389-396
Author(s):  
P. Kolářová ◽  
L. Bezděčková ◽  
Z. Procházková
Keyword(s):  
Gibberellic Acid ◽  
Fagus Sylvatica ◽  
Tap Water ◽  
European Beech ◽  
Dormancy Release ◽  
Germination Capacity ◽  
Germination Speed ◽  
Mean Germination Time ◽  
Fagus Sylvatica L ◽  
Cold Requirement

The effect of ethephon (80, 100 and 120 mg&middot;l<sup>&ndash;1</sup>) and gibberellic acid (GA<sub>3</sub>) (40, 300 and 1,000 mg&middot;l<sup>&ndash;1</sup>) on the germination capacity (GC) and mean germination time (MGT) of European beech (Fagus sylvatica [L.]) dormant beechnuts or beechnuts pre-chilled for four weeks was determined. Compared to the control (dormant untreated seeds) or beechnuts treated with tap water no significant increase in mean GC was detected after the application of ethephon or GA<sub>3</sub> to dormant seeds. Conversely, both ethephon and GA<sub>3</sub> treatments reduced (ethephon significantly) GC when applied to beechnuts chilled for four weeks prior to treatment. The effect of the treatments on germination speed (MGT) and dormancy release significantly improved when beechnuts were chilled for four weeks prior to the application of ethephon or GA<sub>3</sub>. However, the effect of GA<sub>3</sub> on MGT of chilled beechnuts was not so distinct compared to dormant untreated seeds. Reduction in MGT was most obvious in seeds hydrated with 1,000 mg&middot;l<sup>&ndash;1</sup> GA<sub>3</sub> prior to germination. Their cold requirement time was reduced by three weeks compared to beechnuts hydrated in tap water.

scholarly journals How Does Radial Growth of Water-Stressed Populations of European Beech (Fagus sylvatica L.) Trees Vary under Multiple Drought Events?

Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 129
Author(s):  
Tamalika Chakraborty ◽  
Albert Reif ◽  
Andreas Matzarakis ◽  
Somidh Saha
Keyword(s):  
Soil Water ◽  
Fagus Sylvatica ◽  
Tree Growth ◽  
Radial Growth ◽  
Basal Area ◽  
European Beech ◽  
Canopy Openness ◽  
Fagus Sylvatica L ◽  
The Impact ◽  
Neighborhood Competition

European beech (Fagus sylvatica L.) trees are becoming vulnerable to drought, with a warming climate. Existing studies disagree on how radial growth varies in European beech in response to droughts. We aimed to find the impact of multiple droughts on beech trees’ annual radial growth at their ecological drought limit created by soil water availability in the forest. Besides, we quantified the influence of competition and canopy openness on the mean basal area growth of beech trees. We carried out this study in five near-natural temperate forests in three localities of Germany and Switzerland. We quantified available soil water storage capacity (AWC) in plots laid in the transition zone from oak to beech dominated forests. The plots were classified as ‘dry’ (AWC < 60 mL) and ‘less-dry’ (AWC > 60 mL). We performed dendroecological analyses starting from 1951 in continuous and discontinuous series to study the influence of climatic drought (i.e., precipitation-potential evapotranspiration) on the radial growth of beech trees in dry and less-dry plots. We used observed values for this analysis and did not use interpolated values from interpolated historical records in this study. We selected six drought events to study the resistance, recovery, and resilience of beech trees to drought at a discontinuous level. The radial growth was significantly higher in less-dry plots than dry plots. The increase in drought had reduced tree growth. Frequent climatic drought events resulted in more significant correlations, hence, increased the dependency of tree growth on AWC. We showed that the recovery and resilience to climatic drought were higher in trees in less-dry plots than dry plots, but it was the opposite for resistance. The resistance, recovery, and resilience of the trees were heterogeneous between the events of drought. Mean growth of beech trees (basal area increment) were negatively impacted by neighborhood competition and positively influenced by canopy openness. We emphasized that beech trees growing on soil with low AWC are at higher risk of growth decline. We concluded that changes in soil water conditions even at the microsite level could influence beech trees’ growth in their drought limit under the changing climate. Along with drought, neighborhood competition and lack of light can also reduce beech trees’ growth. This study will enrich the state of knowledge about the ongoing debate on the vulnerability of beech trees to drought in Europe.

Short-term nitrogen dynamics are impacted by defoliation and drought in Fagus sylvatica L. branches

2019 ◽  
Vol 39 (5) ◽  
pp. 792-804 ◽  
Author(s):  
Pierre-Antoine Chuste ◽  
Catherine Massonnet ◽  
Dominique Gérant ◽  
Berndt Zeller ◽  
Joseph Levillain ◽  
...  
Keyword(s):  
Fagus Sylvatica ◽  
Nitrogen Dynamics ◽  
Short Term ◽  
Fagus Sylvatica L

scholarly journals Palaeoecology as a Tool for the Future Management of Forest Ecosystems in Hesse (Central Germany): Beech (Fagus sylvatica L.) versus Lime (Tilia cordata Mill.)

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 924
Author(s):  
Astrid Stobbe ◽  
Maren Gumnior
Keyword(s):  
Fagus Sylvatica ◽  
Tilia Cordata ◽  
Beech Forests ◽  
Mountain Ranges ◽  
The Future ◽  
Spruce Stands ◽  
Fagus Sylvatica L ◽  
Low Mountain Ranges ◽  
Intramontane Basins ◽  
Future Management

In the Central German Uplands, Fagus sylvatica and Picea abies have been particularly affected by climate change. With the establishment of beech forests about 3000 years ago and pure spruce stands 500 years ago, they might be regarded as ‘neophytes’ in the Hessian forests. Palaeoecological investigations at wetland sites in the low mountain ranges and intramontane basins point to an asynchronous vegetation evolution in a comparatively small but heterogenous region. On the other hand, palynological data prove that sustainably managed woodlands with high proportions of Tilia have been persisting for several millennia, before the spread of beech took place as a result of a cooler and wetter climate and changes in land management. In view of increasingly warmer and drier conditions, Tilia cordata appears especially qualified to be an important silvicultural constituent of the future, not only due to its tolerance towards drought, but also its resistance to browsing, and the ability to reproduce vegetatively. Forest managers should be encouraged to actively promote the return to more stress-tolerant lime-dominated woodlands, similar to those that existed in the Subboreal chronozone.

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