Intra-Ring and Inter-Ring Variations of Tracheid Length in Fast-Grown Versus Slow-Grown Norway Spruces (Picea Abies)

Our study was conducted on 40 Norway spruces [Picea abies (L.) Karst.] from a stand located in the Belgian Ardennes. Twenty trees were randomly sampled from a slow-growth category, and twenty others from a fast -growth category. The hypothesis under testing is fourfold: increased tree growth rate may affect 1) the intra-ring weighted frequency distribution of tracheid length, 2) the inter-ring variation (from pith to bark) of the parameters describing this frequency distribution, 3) the interring variation of the mean tracheid length, and 4) the correlation between yearly mean tracheid length and yearly ring width.

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Growth rate effects on correlations among ring width, wood density, and mean tracheid length in Norway spruce (Picea abies)

Canadian Journal of Forest Research ◽

10.1139/x97-189 ◽

1998 ◽

Vol 28 (1) ◽

pp. 56-68 ◽

Cited By ~ 46

Author(s):

Pierre Dutilleul ◽

Marc Herman ◽

Tomas Avella-Shaw

Keyword(s):

Growth Rate ◽

Picea Abies ◽

Wood Density ◽

Negative Correlation ◽

Ring Width ◽

Main Hypothesis ◽

Growing Period ◽

Tracheid Length ◽

Rate Effects ◽

Tree Approach

The main hypothesis tested in this paper is whether heavy thinnings affect the correlations among ring width, wood density, and mean tracheid length. Within-tree correlations were calculated between time series of yearly measurements. Among-tree correlations were computed (1) between averages over a growing period and (2) year by year. Correlations were analyzed on 20 fast-grown and 20 slow-grown Norway spruces (Picea abies (L.) Karst.) from an even-aged, plantation-grown stand near Rendeux, Belgian Ardennes. In the within-tree approach, fast-grown spruces showed a stronger negative correlation between ring width and fiber length. In among-tree approach 1, the widely held negative correlation between ring width and wood density vanished when the spruce growth rate was above 2.2 cm/year in circumference. Among-tree approach 2 demonstrated that the magnitude and sign of the correlations also depended on the year; a few years showed a significant correlation between ring width and wood density for the fast-grown Norway spruces, whereas the correlation was systematically negative and significant on many years for the slow-grown spruces. This study may explain part of the contradictory results reported in the literature concerning hypotheses similar to ours.

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Frequency Distribution of Tree Growth Rate in Natural Forest Stands

Annals of Botany ◽

10.1093/oxfordjournals.aob.a087807 ◽

1989 ◽

Vol 64 (1) ◽

pp. 47-57 ◽

Cited By ~ 33

Author(s):

T. KOHYAMA ◽

T. HARA

Keyword(s):

Growth Rate ◽

Frequency Distribution ◽

Tree Growth ◽

Natural Forest ◽

Forest Stands ◽

Tree Growth Rate

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Disentangling the role of competition, light interception, and functional traits in tree growth rate variation in South Asian tropical moist forests

Forest Ecology and Management ◽

10.1016/j.foreco.2020.118908 ◽

2021 ◽

Vol 483 ◽

pp. 118908

Author(s):

Mizanur Rahman ◽

Masum Billah ◽

Md Obydur Rahman ◽

Debit Datta ◽

Muhammad Ahsanuzzaman ◽

...

Keyword(s):

Growth Rate ◽

Functional Traits ◽

South Asian ◽

Tree Growth ◽

Light Interception ◽

Rate Variation ◽

Tree Growth Rate

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On the frequency dependence of water tree growth rate

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1981 ◽

10.1109/eidp.1981.7684667 ◽

1981 ◽

Author(s):

Yehuda Klinger

Keyword(s):

Growth Rate ◽

Frequency Dependence ◽

Tree Growth ◽

Water Tree ◽

Tree Growth Rate

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Growth Kinetics and Formation of Uniform Self-Assembled InAs/GaAs Quantum Dots at

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.124-126.539 ◽

2007 ◽

Vol 124-126 ◽

pp. 539-542

Author(s):

Eui Tae Kim ◽

Anupam Madhukar

Keyword(s):

Growth Rate ◽

Quantum Dots ◽

Growth Kinetics ◽

Slow Growth ◽

Fast Growth ◽

Slow Growth Rate ◽

Self Assembled ◽

Kinetics Of ◽

Fast Growth Rate ◽

2D To 3D

We discuss the growth kinetics of InAs/GaAs self-assembled quantum dots (QDs) using two different InAs deposition rates, relatively fast growth rate of 0.22 ML/sec and slow growth rate of 0.054 ML/sec. With increasing InAs deposition amount to 3.0 ML, the QD density was almost constant after 2D to 3D island transition at the slow deposition rate while the QD density kept increasing and the QD size distribution was relatively broad at the fast growth rate. After the 2D to 3D transition, at the slow growth rate, further deposited In adatoms seemed to incorporate primarily into already formed islands, and thus contribute to equalize island size. The photoluminescence (PL) full-width at half maximum (FWHM) of 2.5 ML InAs QDs at 0.054 ML/sec was 23 meV at 78K. The PL characteristics of InAs/GaAs QDs were degraded significantly after thermal annealing at 550 oC for 3 hours.

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Effects of enhanced tree growth rate on the decay capacities of three saprotrophic wood-fungi

Forest Ecology and Management ◽

10.1016/j.foreco.2006.05.001 ◽

2006 ◽

Vol 232 (1-3) ◽

pp. 12-18 ◽

Cited By ~ 43

Author(s):

Mattias Edman ◽

Rebecca Möller ◽

Lars Ericson

Keyword(s):

Growth Rate ◽

Tree Growth ◽

Tree Growth Rate

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Transcriptome Analysis of Differentially Expressed Genes Related to the Growth and Development of the Jinghai Yellow Chicken

Genes ◽

10.3390/genes10070539 ◽

2019 ◽

Vol 10 (7) ◽

pp. 539 ◽

Cited By ~ 5

Author(s):

Fuxiang Chen ◽

Pengfei Wu ◽

Manman Shen ◽

Mingliang He ◽

Lan Chen ◽

...

Keyword(s):

Growth Rate ◽

Differentially Expressed Genes ◽

Growth And Development ◽

Slow Growth ◽

Growth Traits ◽

Fast Growth ◽

Differentially Expressed ◽

Group A ◽

Upregulated Genes ◽

Jinghai Yellow Chicken

The growth traits are important traits in chickens. Compared to white feather broiler breeds, Chinese local broiler breeds have a slow growth rate. The main genes affecting the growth traits of local chickens in China are still unclear and need to be further explored. This experiment used fast-growth and slow-growth groups of the Jinghai Yellow chicken as the research objects. Three males and three females with similar body weights were selected from the two groups at four weeks old and eight weeks old, respectively, with a total of 24 individuals selected. After slaughter, their chest muscles were taken for transcriptome sequencing. In the differentially expressed genes screening, all of the genes obtained were screened by fold change ≥ 2 and false discovery rate (FDR) < 0.05. For four-week-old chickens, a total of 172 differentially expressed genes were screened in males, where there were 68 upregulated genes and 104 downregulated genes in the fast-growth group when compared with the slow-growth group. A total of 31 differentially expressed genes were screened in females, where there were 11 upregulated genes and 20 downregulated genes in the fast-growth group when compared with the slow-growth group. For eight-week-old chickens, a total of 37 differentially expressed genes were screened in males. The fast-growth group had 28 upregulated genes and 9 downregulated genes when compared with the slow-growth group. A total of 44 differentially expressed genes were screened in females. The fast-growth group had 13 upregulated genes and 31 downregulated genes when compared with the slow-growth group. Through gene ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, many genes were found to be related to cell proliferation and differentiation, muscle growth, and cell division such as SNCG, MCL1, ARNTL, PLPPR4, VAMP1, etc. Real-time PCR results were consistent with the RNA-Seq data and validated the findings. The results of this study will help to understand the regulation mechanism of the growth and development of Jinghai Yellow chicken and provide a theoretical basis for improving the growth rate of Chinese local chicken breeds.

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Crown pruning and understory removal did not change the tree growth rate in a Chinese fir (Cunninghamia lanceolata) plantation

Forest Ecology and Management ◽

10.1016/j.foreco.2020.118056 ◽

2020 ◽

Vol 464 ◽

pp. 118056

Author(s):

Renshan Li ◽

Jianming Han ◽

Xin Guan ◽

Yonggang Chi ◽

Weidong Zhang ◽

...

Keyword(s):

Growth Rate ◽

Tree Growth ◽

Chinese Fir ◽

Cunninghamia Lanceolata ◽

Tree Growth Rate

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Two-year tree growth patterns investigated from monthly girth records using dendrometer bands in a wet evergreen forest in India

Journal of Tropical Ecology ◽

10.1017/s0266467400001498 ◽

2000 ◽

Vol 16 (3) ◽

pp. 429-446 ◽

Cited By ~ 24

Author(s):

Raphaël Pélissier ◽

Jean-pierre Pascal

Keyword(s):

Growth Rate ◽

Tree Growth ◽

Growth Patterns ◽

Annual Growth ◽

Evergreen Forest ◽

Annual Growth Rate ◽

Growth Data ◽

Growth Profiles ◽

Dendrometer Bands ◽

The Mean

With the aim of characterizing tree growth patterns, this paper re-examines the growth data of 100 selected trees belonging to 24 species that were recorded monthly in a 0.2-ha plot of a wet evergreen forest in the Western Ghats of India during the period 1980–82 using dendrometer bands. The mean growth profile, combining all of the selected trees, showed: (a) a significantly lower annual growth rate during the second year of survey which seemed to be negatively related to monsoon precipitation; (b) significant intra-annual growth variation clearly related to the regular alternation between a period of heavy rain and a quite long dry season of the monsoon climatic regime. Analysis of the variability of the individual smoothed growth profiles representing the 2-y trend of the growth data showed that: (a) the mean growth rate depended on a combination of an intrinsic endogenous variable (the structural class grouping species according to their maximum size), a tree size variable (tree diameter at breast height, dbh) and a neighbourhood variable (the number of taller neighbours in a 10-m radius); (b) the sudden change in growth rate from one year to the other was not predictable using these variables. The amplitude of the seasonal variations, investigated from the detrended growth profiles, appeared to be dependent on a combination of tree dbh and the number of taller neighbours in a 10-m radius. A co-inertia analysis of the smoothed and the detrended growth profiles indicated that the trees with fast growth also exhibited high seasonal variation. It is suggested that fast growing trees are those with favourable crown positions, which are consequently subject to high transpiration rates due to radiation and wind exposure.

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HEART ROT OF JACK PINE IN ONTARIO: I. THE OCCURRENCE OF BASIDIOMYCETES AND MICROFUNGI IN DEFECTIVE AND NORMAL HEARTWOOD OF LIVING JACK PINE

Canadian Journal of Botany ◽

10.1139/b66-035 ◽

1966 ◽

Vol 44 (3) ◽

pp. 275-295 ◽

Cited By ~ 9

Author(s):

J. T. Basham

Keyword(s):

Growth Rate ◽

Tree Growth ◽

Pinus Banksiana ◽

Jack Pine ◽

Decayed Wood ◽

Principal Type ◽

Tree Growth Rate ◽

Individual Trees ◽

Stand Conditions

A survey was made of the fungi inhabiting the heartwood of living jack pine (Pinus banksiana Lamb.) in Ontario, particularly in stained and decayed wood. Two Basidiomycetes encountered frequently were Fomes pini (Fr.) Karst., associated with red stain and white pocket rot, and Peniophora pseudo-pini Weres. & Gibson, isolated almost exclusively from stained wood. F. pini was the only fungus consistently associated with white pocket rot, the principal type of heart rot in jack pine. The three most abundant microfungi, a member of the Coryne sarcoides complex, Tympanis hypopodia Nyl., and Retinocyclus abietis (Crouan) Groves & Wells, were encountered frequently in stained wood, but less frequently in decayed and normal wood.Many aspects of the occurrence of these five fungi in jack pine were investigated, including their distribution in the stems and branch stubs of individual trees and their association with normal, stained, and decayed wood therein; and the relation between their occurrence and tree growth rate, various heartwood properties, and different stand conditions. The apparent means by which the fungi enter jack pine, and the possible existence of a succession of fungi in the heartwood of living trees, are discussed.

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