Relevant bibliographies by topics / Forest tree breeding. eng

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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  5. Conference papers

Academic literature on the topic 'Forest tree breeding. eng'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Forest tree breeding. eng"

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Holderegger, Rolf. "Vielfältige Anwendungen genetischer Methoden im Wald." Schweizerische Zeitschrift fur Forstwesen 167, no. 6 (2016): 308–15. http://dx.doi.org/10.3188/szf.2016.0308.

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Diverse applications of genetic methods in forest ecosystems Swiss forests are managed in a close-to-nature way, and they mainly get naturally rejuvenated. This leads to a forest situation most beneficial for the conservation of the genetic diversity of forest trees. If tree breeding and artificial planting are not main targets in Switzerland, why then using genetics in Swiss forests? In fact, the applications of genetic methods in forests are manifold. They can be used for the identification of connectivity and the evaluation of the success of connectivity measures, e.g., among total reserves, old-growth stands and habitat trees. With genetic methods, one may also study how native tree species and their genetic varieties can best be used for adaptation to climate change. Other applications comprise the investigation of biodiversity and ecology, e.g., the influence of forest management on soil biodiversity, or the diagnosis of invasive pests and pathogens and the search for agents of biological control. In the framework of multifunctional forest management, genetic applications can play an important role, if used in a sensible way.
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Kim, K. H., and L. Zsuffa. "Reforestation of South Korea: The history and analysis of a unique case in forest tree improvement and forestry." Forestry Chronicle 70, no. 1 (1994): 58–64. http://dx.doi.org/10.5558/tfc70058-1.

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Forests of South Korea were severely depleted during the wars and because of poor management in the intervening periods. By 1953, at the end of the Korean war, a significant portion of the forests was completely destroyed. Exposed land was denuded and urgent action was needed to re-establish tree cover in order to reduce erosion.This paper describes the special situation and task faced by the Korean Forest Service in reforestation of the country and securing of planting stock, to a large degree by introducing exotic species and hybrid varieties through the efforts of the Institute of Forest Genetics of Korea. Tree improvement strategies used, results, and environmental consequences of this unique effort as seen thirty years later also are discussed. Key words: South Korea, reforestation, monocultures, tree-breeding, Populus, Pinus rigida, Pinus rigida × P. taeda, P. densiflora, exotics, environmental consequences
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Witzell, Johanna, and Juan A. Martín. "Phenolic metabolites in the resistance of northern forest trees to pathogens — past experiences and future prospects." Canadian Journal of Forest Research 38, no. 11 (2008): 2711–27. http://dx.doi.org/10.1139/x08-112.

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Phenolic metabolites are frequently implicated in chemical defense mechanisms against pathogens in woody plants. However, tree breeding programmes for resistance to pathogens and practical tree-protection applications based on these compounds seem to be scarce. To identify gaps in our current knowledge of this subject, we explored some of the recent literature on the involvement of phenolic metabolites in the resistance of northern forest trees (Pinus, Picea, Betula, Populus, and Salix spp.) to pathogens. Although it is evident that the phenolic metabolism of trees is often activated by pathogen attacks, few studies have convincingly established that this induction is due to a specific defense response that is capable of stopping the invading pathogen. The role of constitutive phenolics in the resistance of trees to pathogens has also remained unclear. In future studies, the importance of phenolics in oxidative stress, cell homeostasis and tolerance, and the spatial and temporal localization of phenolics in relation to invading pathogens should be more carefully acknowledged. Possibilities for future studies using advanced methods (e.g., metabolic profiling, confocal laser scanning microscopy, and use of modified tree genotypes) are discussed.
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Yanchuk, Alvin D. "A quantitative framework for breeding and conservation of forest tree genetic resources in British Columbia." Canadian Journal of Forest Research 31, no. 4 (2001): 566–76. http://dx.doi.org/10.1139/x00-133.

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Over the last decade, forest tree breeders have become aware of the need for gene conservation, but have struggled with methods that would meaningfully integrate breeding and conservation populations. Gene Namkoong has provided the most guidance in this area by defining the role of in- and ex-situ populations in forest tree gene resource management and, particularly, the need for this to be dynamic in time and space. However, once conservation plans for individual species in British Columbia were considered, it became clear that more quantitative structure was needed to provide a framework for attaining practical management objectives. This paper attempts to provide such a framework and show how breeding and conservation populations can be integrated into a continuum of genetic resources. First, capturing only one copy of an allele is likely not satisfactory to meet conservation objectives, and sampling targets should be set higher (e.g., 20) so as to avoid potential problems of inbreeding at later stages in the program. Second, there seems to be a large problem with conserving very low frequency alleles that are recessive, but this occurs in nature as well. Third, in situ populations should be large enough and in a state to persist on their own over several generations, so the more recent effective population size numbers proposed by Lynch (1996) (i.e., ~1000) need to be considered. Fourth, while breeding populations of moderate size (~80) will contain adequate amounts of quantitative genetic variation, they will also contain 20 copies of dominant alleles at frequencies of ~0.20 or higher. Fifth, maintaining and rejuvenating strategic ex-situ test populations now seems to be the only way to conserve low- to mid-frequency alleles that will (i) be reduced in progressive breeding populations by drift and, (ii) over time, not be in desirable genetic backgrounds in in situ populations. Sixth, any reliance on locating mutants in production populations seems generally remote and cannot be relied upon except in a very few situations, although mutation will be important in breeding and in reserves in situ.
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Domahidi, Zoltan, Scott E. Nielsen, Erin M. Bayne, and John R. Spence. "Boreal Owl (Aegolius funereus) and Northern Saw-whet Owl (Aegolius acadicus) breeding records in managed boreal forests." Canadian Field-Naturalist 134, no. 2 (2020): 125–31. http://dx.doi.org/10.22621/cfn.v134i2.2146.

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During the 2016 breeding season we monitored 169 nest boxes suitable for Boreal Owl (Aegolius funereus) and Northern Saw-whet Owl (Aegolius acadicus) in high-latitude (>55°N) boreal forests of northwestern Alberta affected by partial logging. Despite the large number of boxes deployed, the number of boxes used by Boreal and Northern Saw-whet Owls was small. Boreal Owls used nest boxes (n = 4) in conifer-dominated stands with three being in uncut blocks and the other in a 50% green tree retention cut-block. In contrast, Northern Saw-whet Owls used boxes (n = 4) in a broader range of cover types, breeding in boxes placed in stands with at least 20% post-harvest tree retention. Although both species successfully bred in the same landscape, Boreal Owls produced fewer eggs (mean = 2.5) and raised fewer young (mean = 0.5) than Northern Saw-whet Owls (5 and 2.25, respectively). Furthermore, our observed Boreal Owl egg production was lower than has been found for the same species nesting in nest boxes in different regions or forest types. In contrast, breeding parameters of Northern Saw-whet Owls were similar to that found in nest boxes in the eastern boreal region of Canada and in the southern part of its range.
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DATTA, APARAJITA, and G. S. RAWAT. "Nest-site selection and nesting success of three hornbill species in Arunachal Pradesh, north-east India: Great Hornbill Buceros bicornis, Wreathed Hornbill Aceros undulatus and Oriental Pied Hornbill Anthracoceros albirostris." Bird Conservation International 14, S1 (2004): S39—S52. http://dx.doi.org/10.1017/s0959270905000213.

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Nest-site selection by the sympatric Great Hornbill Buceros bicornis, Wreathed Hornbill Aceros undulatus and Oriental Pied Hornbill Anthracoceros albirostris was investigated in a lowland tropical forest in Arunachal Pradesh, north-east India during 1997–2000. Information on two nests of Rufous-necked Hornbill Aceros nipalensis in higher-elevation forests is also presented. All species nested in live trees of three tree genera, 83% (n = 36) in Tetrameles nudiflora, an emergent deciduous softwood, relatively common in lowland foothill forests. No difference was recorded in nest-tree species or nesting habitats of sympatric hornbills, but there were a few differences in structural characteristics of nest-trees. Cavity size was the main variable separating the three species. Great Hornbills used larger cavities while Oriental Pied Hornbills used smaller cavities closer to riverine areas. Nesting was attempted at 64% of known sites and successful fledging of chicks was 80% overall (n = 72 nests, pooled over 4 years). Nest-trees in disturbed habitats near human habitation were used but were often abandoned or unsuccessful and 50% of all nest-trees were inactive by the end of the study. Potential large nest-trees had a density of 5.9/ha, that of the two most used species was 1.3/ha, and minimum nest densities of all three species was about 1 pair/km2. Interference competition for nest-sites was not observed, despite similarity in nest-tree characteristics, low nest density and high loss of nest-trees. Nest-site availability may naturally limit hornbill populations in the area, and additional loss of nesting habitat to human activities may exacerbate limited availability of breeding sites.
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Johnstone, R. E., T. Kirby, and K. Sarti. "The breeding biology of the Forest Red-tailed Black Cockatoo Calyptorhynchus banksii naso Gould in south-western Australia. I. Characteristics of nest trees and nest hollows." Pacific Conservation Biology 19, no. 2 (2013): 121. http://dx.doi.org/10.1071/pc130121.

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The Forest Red-tailed Black Cockatoo Calyptorhynchus banksii naso (FRTBC) is a large, iconic forest cockatoo, endemic to the south-west corner of Western Australia. It is currently listed as Vulnerable under the State Western Australian Wildlife Conservation Act and under the Commonwealth Environment Protection and Biodiversity Conservation Act. In this paper, we provide details of nest tree and nest hollow requirements based on details of hollows in 128 nest trees studied over 17 years. FRTBC are monogamous and pairs nest in tree hollows from 6.5–33 m above ground. Most nests are in very large and very old, mature Marri Corymbia calophylla, a long-lived endemic tree species, which is the most important nesting tree throughout the FRTBC range. Nest trees of all species had a mean circumference at breast height of 2.79 m, a mean estimated age of 222 years and a mean overall height of 20.24 m. Marri nest trees had an mean circumference at breast height of 2.76 m, a mean estimated age of 220 years (95% confidence limit 209–231 years) and an average overall height of 20.04 m. The rate of fall or loss of nest trees was high, c. 16.6% per decade. A wide range of hollow types, defined by position of the hollow in the tree, were found. Hollow aspects were also diverse. The mean height to a hollow was 14.49 m. Mean hollow depth was 1.44 m, mean floor space (the longest linear distance across the bottom of the hollow) was 33.2 cm and the mean hollow entrance area was 30 x 34 cm. FRTBC nests are typically, but not always, clustered in the landscape and social interactions within the flock are likely to play a part in the clustering of nests. Nest competitors, including feral European Honey Bee Apis mellifera, Carnaby’s Cockatoo Calyptorhynchus latirostris, Baudin’s Cockatoo C. baudinii and the Regent Parrot Polytelis anthopeplus were recorded using nest hollows once used by FRTBC. In the past Marri was harvested commercially, especially the largest and oldest trees, for timber and woodchips. In recent times the volume of Marri logs has been reduced due to a decline in markets e.g. between 2004 and 2010 a total of 95,436 m³ was harvested (K. Whitford, pers. comm.). Given the importance of large, old trees for FRTBC breeding habitat, conservation of these trees
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Neale, David B., and Claire G. Williams. "Restriction fragment length polymorphism mapping in conifers and applications to forest genetics and tree improvement." Canadian Journal of Forest Research 21, no. 5 (1991): 545–54. http://dx.doi.org/10.1139/x91-076.

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It is now technically possible to construct high-density restriction fragment length polymorphism maps for almost any conifer. Hundreds of new genetic markers will become available for forest genetics research and tree-improvement applications. Having a large number of genetic markers will improve efficiency in studies in which isozymes or other markers have traditionally been applied (e.g., genetic variation in populations, paternity analysis, varietal identification, and seed-orchard efficiency). High-density restriction fragment length polymorphism maps may make it possible to (i) identify quantitative trait loci and (ii) practice marker-assisted selection in conifer breeding.
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Marcu, Nicu, Marius Budeanu, Ecaterina Nicoleta Apostol, and Raul Gheorghe Radu. "Valuation of the Economic Benefits from Using Genetically Improved Forest Reproductive Materials in Afforestation." Forests 11, no. 4 (2020): 382. http://dx.doi.org/10.3390/f11040382.

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The research objective was to demonstrate the economic impact of using, in afforestation, forest reproductive materials (FRMs) obtained from seed trees selected in the most valuable Norway spruce populations of the FGRs’ (forest genetic resources’) category. The values obtained for the main growth traits (diameter at breast height (Dbh), tree height (Th), and tree volume (Tv)), both in the FGR and in the closest population (with the same age and growth in similar environmental conditions), were compared. Three comparative trials were analyzed, each belonging to different breeding levels: Open-pollinated (Breţcu, 40 years old), half-sib (Măneciu, 25 years), and full-sib (Comandău, 23 years). The difference in volume/hectare between the FGR and an unimproved neighbor population was economically quantified (€), based on the average price per cubic meter (m3) of spruce wood in Romania; the profit at the end of the rotation period (110 years) was projected taking into account the genetic gain that will result from the use of FRM collected from the FGRs. The average FGR growth results were superior to the unimproved neighbor populations, with 8%–13%, 14%–25%, and 26%–79% for Dbh, Th, and volume/ha, respectively, and the differences increased if the best 10% seed trees of the trials were used. For Th, a five times higher family mean heritability was registered for the pendula trees (compared to pyramidalis) in the half-sib trial, while in the full-sib experiment, the pendula trees (both full and half pendula) again registered higher heritability, but for Dbh, which recommends the pendula selection for different traits in the two trials. These results have led to a rate of profitability between 540 and 3366 €/ha, a value that is predicted to increase until the end of the rotation period, when the genetic gain could generate a profit of 7560 €/ha.
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Flynn, Erin M., Susan M. Jones, Menna E. Jones, Gregory J. Jordan, and Sarah A. Munks. "Characteristics of mammal communities in Tasmanian forests: exploring the influence of forest type and disturbance history." Wildlife Research 38, no. 1 (2011): 13. http://dx.doi.org/10.1071/wr10025.

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Context With increasing pressure worldwide on forest habitat, it is crucial to understand faunal ecology to effectively manage and minimise impacts of anthropogenic habitat disturbance. Aims This study assessed whether differences in forest type and disturbance history were reflected in small to medium mammal communities found in Tasmania’s production forests. Methods Trapping was conducted in spring and summer, and autumn and winter during 2007–08 at four dry Eucalyptus forest sites (two regenerating after harvest and two in relatively undisturbed forest) in south-east Tasmania, and four wet Eucalyptus forest sites (two regenerating after harvest and two in relatively undisturbed forest) in north-east Tasmania. All sites were embedded within a matrix of mature or older aged regenerating forest. Key results Thirteen mammal species were recorded across all sites. There was no difference in species diversity or richness between forest type or disturbance regime, but species composition differed. Total number of individual animals and captures was influenced strongly by forest type and disturbance history, with most animals captured in the dry disturbed forest sites. Abundance of some species (e.g. bettongs and potoroos) was higher in disturbed sites than undisturbed sites. Brushtail possum numbers (adults and offspring), however, were lower in disturbed sites and populations displayed a male biased adult sex ratio and lower breeding frequency. Habitat structural complexity and vegetation diversity within core sites, and age structure of the forest in the surrounding landscape did not vary significantly, indicating that broad resource (food and refuge) availability was equivalent across sites. Conclusions In general, the small to medium mammals in this study did not appear to be significantly affected by forest harvesting in the medium term. Implications Although past harvesting altered the abundance of some habitat features (e.g. canopy cover, basal area of trees, and tree hollow availability), we suggest that the availability of such features in the surrounding landscape may mitigate the potential effects of disturbance on the species for which such habitat features are important.
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Dissertations / Theses on the topic "Forest tree breeding. eng"

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Massaro, Renata Alves Meira. "Viabilidade de aplicação da seleção precoce e tamanho de parcelas em testes clonais de Eucalyptus spp. /." Jaboticabal : [s.n.], 2008. http://hdl.handle.net/11449/92656.

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Orientador: Rinaldo Cesar de Paula<br>Banca: Dilermando Perecin<br>Banca: Miguel Luiz Menezes Freitas<br>Resumo: Com o objetivo de avaliar a eficiência da seleção precoce e tamanho ótimo de parcelas em Eucalyptus spp., foram usados dados de dois testes clonais avaliados quanto ao crescimento em altura (ALT), diâmetro à altura do peito (DAP) e volume individual de madeira (VOL) aos 25, 50 e 72 meses de idade. O delineamento experimental nos dois testes clonais foi o de blocos casualizados, com 30 tratamentos (clones), seis repetições, sendo um deles com seis plantas por parcelas (teste clonal 1) e o outro com 10 plantas (teste clonal 2). Foram obtidas as estimativas de coeficiente de determinação genotípico e de correlações genotípicas entre os caracteres nas idades juvenis e na idade de rotação. Para verificar a viabilidade da aplicação da seleção precoce foi simulada a seleção de 30% dos clones nas idades juvenis e na idade de rotação, para cada um dos caracteres e idades avaliadas, obtendo-se as estimativas de ganhos com a seleção direta e indireta. Para verificar o tamanho de parcelas, foi utilizado o coeficiente de repetibilidade calculado através dos métodos: Análise de Variância, dos Componentes Principais e o de Análise Estrutural, os dois últimos calculados através da matriz de correlação. Houve diferenças significativas entre os clones avaliados nos dois experimentos para todos os caracteres e idades. Com os resultados obtidos, recomenda-se a seleção precoce sobre DAP praticada em torno de dois anos de idade. O uso de seis repetições constituídas de pelo menos quatro plantas por parcela e a avaliação em apenas uma idade proporciona coeficiente de determinação superior a 80%.<br>Abstract: Aiming evaluate the Eucalyptus spp. early selection efficiency and optimum size of plots, were used data of height, diameter at breast height and individual wood volume evaluated in two clonal tests at 25, 50, and 72 months old. The experimental design in both clonal tests was randomized blocks, using 30 treatments (clones), 6 replications, at 3.0 x 3.0m spacing and linear plots, and one of them with 6 plants per plot (clonal test 1) and the other with 10 plants (clonal test 2). Variance analysis to each trait and age was done to each experiment. The estimates of genotypic determination coefficient and the correlation between the early and mature age traits were obtained. To check the viability of early selection, was simulated the selection in young and mature age, adopting 30% of selection to each one of the traits and ages evaluated, estimating the gains by the direct and indirect selection. To check the size of plots, we used the repeatability coefficient calculated by the methods: Analysis of Variance, and the Principal Components of Structural Analysis, the last two calculated through the matrix of correlation. There were significant differences among clones evaluated in the two experiments to all traits and ages. From the results obtained is suggested the practice of early selection from 2 years old age to eucalyptus clonal tests. The use of six replications consisting of at least four plants per plot and evaluation at one age provides a coefficient of determination more than 80%.<br>Mestre
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Lstibůrek, Milan. "Population response to positive assortative mating in forest tree breeding." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-03142005-083542/.

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Positive assortative mating (PAM) may substantially enhance genetic variance in a breeding population (BP). This creates potential for additional genetic gains available through production populations (PP) to forest plantations. Open-nucleus strategies (NB) have been incorporated in forest tree breeding programs. In NB, the BP is subdivided into two hierarchical levels, a nucleus and a main population, and can be considered a less rigorous form of PAM. First, PAM was compared to NB by stochastic simulation considering jointly genetic gain and diversity within the framework of a long-term breeding program. Test effort was either assumed constant throughout the entire BP or was redirected according to the rank of each mate. The simulation revealed that PAM results in larger gains in the PP compared to NB under both situations and at any target PP diversity. Second, the test effort during PAM was redirected by varying family sizes as a linear function of mid-parent BLUP values. The actual distribution of mid-parent BLUP values was standardized by a constant value, which was varied in simulation scenarios to cover the entire range of the distribution of family sizes. When equal numbers of progenies were selected per family and the variation in family sizes was maximized, only a minimal reduction in BP diversity was observed, compared to cases with constant family sizes. Under such favorable conditions, the redistribution of resources increased genetic response and variance in the BP, causing substantially greater genetic response in the PP. These conclusions were verified under a mixed-inheritance model with a major-gene locus contributing to variation in a quantitative trait. Finally, the investigation of PAM was extended by considering correlated traits within the framework of a clonal forestry program. The success of somatic embryogenesis in families generated by crossing elite genotypes developed in the breeding program was either considered exponentially distributed or constant. The distribution of success caused non-significant differences in genetic gain of PP. These conclusions were verified over a range of correlation, heritabilities and economic weights of traits.
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Jansson, Gunnar. "Approaches to genetic testing and evaluation in forest tree breeding /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1998. http://epsilon.slu.se/avh/1998/91-576-5340-2.gif.

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Rosvall, Ola. "Enhancing gain from long-term forest tree breeding while conserving genetic diversity /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5643-6.pdf.

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Edmund, Alison. "Relationships among tree-species composition, vegetation structure, and forest breeding birds in southern Illinois." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/653.

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Oaks (Quercus spp.) have dominated eastern forests of the United States for centuries; however, current disturbance regimes discourage oak recruitment and allow shade-tolerant mesophytic species (e.g., maples, Acer spp.) to out-compete oaks. I assessed the effects of mesophication on bird communities by examining differences in breeding bird community structure, abundance, and diversity across 8 and 12 deciduous forest stands in southern Illinois during 2009 and 2010, respectively, using line transects, and by examining a 5-year monitoring data set from across the Shawnee National Forest in 2005-2009. I predicted that variation in bird community structure between maple- and oak-dominated forests can be explained by differential availability of foraging niches. Forest stands used in 2009-2010 were separated along a gradient of hard-mast tree composition, which was defined as the percentage of tree basal area in the stand contributed by oaks and hickories (Carya spp.). Linear regression and Akaike's Information Criteria were used to assess habitat-association models for 7 bird community metrics: bird species diversity, species richness, overall abundance, and abundance of aerial foragers, bark gleaners, foliage gleaners, and ground gleaners. Bird species diversity (Shannon-Wiener H') and species richness ranged from 2.97 to 3.15, and 29 to 37, respectively, over both years. Bird species diversity and species richness were best modeled by a negative relationship with % hardmast tree basal area across both years, whereas overall abundance was best modeled by a positive relationship with understory woody stem diversity. Detection rates for foraging guilds were best modeled by various metrics of habitat structure. Aerial foragers, bark gleaners, foliage gleaners, and ground gleaners responded positively to stem density, downed coarse woody debris density, basal area, and stem diversity, respectively. I used non-metric multidimensional scaling (NMDS) and analysis of similarity (ANOSIM) to examine the degree of dissimilarity among bird communities and site type. In 2010, the bird community differed overall, with communities in oak forests tending (P = 0.09-0.11) to differ those in non-oak and mixed-mesophytic sites. Analysis of a 5-year data set yielded similar results. All models tested for bird-species diversity and species richness were competing, suggesting no individual habitat factor was a strong predictor. Overall abundance and abundance of aerial foragers, bark gleaners and foliage gleaners showed negative relationships to hardmast basal area in all years combined. Ground gleaners responded positively to tree diversity. A post-hoc analysis revealed that overall bird abundance and abundance of foliage-, bark- and ground-gleaning guilds responded positively to an index of riparian areas. Resource use during the breeding season may be shifted to mesic habitats, possibly due to increased resource availability in terms of arthropods and water. Results indicated that mesophication may not have the predicted effects on forest-breeding bird communities, and that vegetation structure was more important in determining bird community structure than tree composition in small-scale forest stands during the breeding season. Resident and over-wintering bird species may be most affected by the loss of oaks due to use during time periods when mesic habitats do not supplement resources. Managers should consider maintenance of a diversity of forest types to maximize avian diversity.
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Hocking, Daniel J. "Gray treefrog breeding site selection and offspring performance in response to forest management." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5103.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 26, 2007) Includes bibliographical references.
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Tittler, Rebecca. "Effects of residual tree retention of breeding songbirds in Alberta's boreal mixed-wood forest." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ34428.pdf.

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Myszewski, Jennifer Helen. "A comparison of selection and breeding strategies for incorporating wood properties into a loblolly pine (Pinus taeda L.) elite population breeding program." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/75.

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The heritability of microfibril angle (MFA) in loblolly pine, Pinus taeda L., and its genetic relationships with height, diameter, volume and specific gravity were examined in two progeny tests with known pedigrees. Significant general combining ability (GCA), specific combining ability (SCA), and SCA x block effects indicated that there are both additive and non-additive genetic influences on MFA. Individual-tree narrow-sense heritability estimates were variable, ranging from 0.17 for earlywood (ring) 4 MFA to 0.51 for earlywood (ring) 20 MFA. Genetic correlations between MFA, specific gravity and the growth traits were non-significant due to large estimated standard errors. Multiple-trait selection and breeding in a mainline and elite population tree improvement program were simulated using Excel and Simetar (Richardson 2001). The effects of four selection indices were examined in the mainline population and the effects of seven selection indices and four breeding strategies were examined in the elite population. In the mainline population, selection for increased growth caused decreased wood quality over time. However, it was possible to maintain the overall population mean MFA and mean specific gravity at levels present in the base population by implementing restricted selection indices. Likewise, selection for improved wood quality in the elite population resulted in decreased growth unless restricted selection indices or pulp indices derived from those of Lowe et al. (1999) were used. Correlated phenotypic responses to selection on indices using economic weights and heritabilities were dependent on breeding strategy. When a circular mating system (with parents randomly assigned to controlled-crosses) was used, the index trait with a higher economic weight was more influential in determining correlated responses in non-index traits than the index trait with a lower economic weight. However, when positive assortative mating was used, the index trait with a greater variance was more influential in determining correlated responses in non-index traits than the index trait with a lower variance regardless of economic weight.
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Aga, Esayas. "Molecular genetic diversity study of forest coffee tree (Coffea arabica L.) populations in Ethiopia : implications for conservation and breeding /." Alnarp : Dept. of Crop Science, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200579.pdf.

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Lobão, Dan Érico. "Agroecossistema cacaueiro da Bahia: cacau-cabruca e fragmentos florestais na conservação de espécies arbóreas /." Jaboticabal : [s.n.], 2007. http://hdl.handle.net/11449/105262.

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Orientador: Sergio Valiengo Valeri<br>Banca: Miguel Luiz Menezes Freitas<br>Banca: Marcos Silveira Bernardes<br>Banca: Maria Esmeralda Soares Payão Demattê<br>Banca: Rinaldo César de Paula<br>Resumo: A Floresta Atlântica na Região Cacaueira da Bahia tem os mais significativos remanescentes florestais em áreas agricultáveis. Deve-se isso, ao plantio tradicional do cacaueiro sob o dossel da floresta que, aprimorado ao longo de 250 anos, resultou no sistema agrossilvicultural cacau-cabruca. Este trabalho objetivou descrever a estrutura fitossociológica da vegetação arbórea em três áreas de cacau-cabruca e dois fragmentos florestais remanescentes, com ênfase na conservação de espécies. O estudo foi desenvolvido em cinco áreas, três com cacau-cabruca nos municípios de Ibirapitanga, Piraí do Norte e Ubatã, e duas, em fragmentos florestais inseridos no agroecossistema cacaueiro, nos municípios de Itapé e Jussari. O método de amostragem usado foi o de quadrantes, e o critério de inclusão foi diâmetro à altura do peito (DAP) 15 cm. Na análise da estrutura, foram avaliados os descritores usuais de fitossociologia. No cacau-cabruca, inventariaram-se 101 espécies em 36 famílias; 10 espécies apresentaram ocorrência comum. As áreas apresentaram baixa similaridade entre si. Os índices de diversidade (H') foram 3,3 para Ibirapitanga, 3,2 para Piraí do Norte e 4,0 para Ubatã. Todas as áreas estudadas apresentaram alta dominância total (DoA) e densidade total acima do que a CEPLAC recomenda. Nos fragmentos florestais, foram inventariados 328 indivíduos, distribuídos entre 76 táxons, em 29 famílias botânicas. Dessas, 19 espécies apresentaram ocorrência comum às duas comunidades. A similaridade entre os fragmentos foi J' = 33%. Quanto à diversidade, em Itapé, o H' foi 3,16 e em Jussari, 3,77. O cacau-cabruca conservou remanescentes da Floresta Atlântica, tanto fragmentos florestais como indivíduos arbóreos, bem como, exemplares significativos de espécies arbóreas de diferentes estádios da sucessão, espécies raras e nobres de valor comercial... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: The Atlantic Forest biome in the Bahia Cocoa Region has the most significant forest remanescents in agricultural areas. For that reason, the traditional cocoa planting under the forest canopy, which has been improved along 250 years, resulted in the agrossilvicultural cacau-cabruca system. This work describes the phytosociological structure of the arboreal vegetation in three cacaucabruca areas and two forest fragment-remanescents, with emphasis in species conservation. The study was developed in five areas, three with cocoa-cabruca in Ibirapitanga, Piraí do Norte and Ubatã municipalities, and two in forest fragments inserted in the cocoa agroecosystems of Itapé and Jussari. The sampling method used was quadrant and the inclusion criterion was chest height diameter (CHD) 15 cm. In the structure analysis the usual phytosociological descriptors were evaluated. In the cacau-cabruca 101 species in 36 families were inventoried, and nine of them showed common occurrence. The areas presented low similarity. The diversity indexes (H') were 3,3 for Ibirapitanga, 3,2 for Piraí do Norte and 4,0 for Ubatã. All areas studied showed high total dominance (DoA) and total density above the one recommended by the CEPLAC. In the forest fragments 328 individuals were inventoried, distributed among 76 taxons, in 29 botanical families. From these, 19 species presented common occurrence to both communities. The similarity between the fragments was J' = 33%. As for diversity, in Itapé H' was 3,16 and in Jussari 3,77. Cacau-cabruca conserved remanescents of the Atlantic Forest, either as fragments or shade arboreal individuals, as well as significant arboreal species at different succesional stages, rare and noble species of commercial value such as Caesalpinia echinata (pau-brasil), among others, in abundance, density and dominance.<br>Doutor
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Books on the topic "Forest tree breeding. eng"

1

Pâques, Luc E., ed. Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9.

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John, Talbert, ed. Applied forest tree improvement. Blackburn Press, 2003.

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Namkoong, Gene. Tree breeding: Principles and strategies. Springer-Verlag, 1988.

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Marcus Wallenberg Symposium (1994 Stockholm, Sweden). Tree breeding, population genetics and conservation of genes. Marcus Wallenberg Foundation, 1995.

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Dojack, John. Manitoba's tree improvement strategy. Manitoba Natural Resources, 1991.

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White, Timothy L. Predicting breeding values with applications in forest tree improvement. Kluwer Academic Publishers, 1989.

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White, Timothy L., and Gary R. Hodge. Predicting Breeding Values with Applications in Forest Tree Improvement. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-015-7833-2.

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Risbrudt, Christopher D. How effective are tree improvement programs in the 50 States? U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1986.

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Southern Forest Tree Improvement Conference (24th 1997 Orlando, Fl.). 24th biennial southern forest tree improvement conference proceedings. National Technical Information Service, 1997.

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Alberta. Alberta Sustainable Resource Development. Standards for tree improvement in Alberta. Land and Forest Division, Alberta Sustainable Resource Development, 2005.

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Book chapters on the topic "Forest tree breeding. eng"

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Mellan, R., and M. Kirst. "Quantitative genomics of forest-tree breeding." In Forest genomics and biotechnology. CABI, 2020. http://dx.doi.org/10.1079/9781780643502.0109.

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Ducci, Fulvio, Bart De Cuyper, Anna De Rogatis, Jean Dufour, and Fréderique Santi. "Wild Cherry Breeding (Prunus avium L.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_10.

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Pâques, Luc E., Elena Foffová, Berthold Heinze, Marie-Anne Lelu-Walter, Mirko Liesebach, and Gwenael Philippe. "Larches (Larix sp.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_2.

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Jansson, Gunnar, Darius Danusevičius, Helmut Grotehusman, et al. "Norway Spruce (Picea abies (L.) H.Karst.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_3.

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Lee, Steve, David Thompson, and Jon Kehlet Hansen. "Sitka Spruce (Picea sitchensis (Bong.) Carr)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_4.

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Chambel, Maria Regina, Jose Climent, Christian Pichot, and Fulvio Ducci. "Mediterranean Pines (Pinus halepensis Mill. and brutia Ten.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_5.

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Krakau, Ute-Katrin, Mirko Liesebach, Tuija Aronen, Marie-Anne Lelu-Walter, and Volker Schneck. "Scots Pine (Pinus sylvestris L.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_6.

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Krabel, Doris, and Heino Wolf. "Sycamore Maple (Acer pseudoplatanus L.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_8.

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Douglas, Gerry C., Alfas Pliura, Jean Dufour, et al. "Common Ash (Fraxinus excelsior L.)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_9.

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Bastien, Jean-Charles, Leopoldo Sanchez, and Daniel Michaud. "Douglas-Fir (Pseudotsuga menziesii (Mirb.) Franco)." In Forest Tree Breeding in Europe. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6146-9_7.

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Conference papers on the topic "Forest tree breeding. eng"

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Ge, Wei, Xiaohong Yang, and Kezhong Zhang. "Research on Teaching Reform of Forest Tree Genetics and Breeding Course." In Proceedings of the 2018 2nd International Conference on Economic Development and Education Management (ICEDEM 2018). Atlantis Press, 2018. http://dx.doi.org/10.2991/icedem-18.2018.10.

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