Dissertations / Theses on the topic 'Provenance variations'
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Hemery, Gabriel E. "Juglans regia L : genetic variation and provenance performance." Thesis, University of Oxford, 2000. http://ora.ox.ac.uk/objects/uuid:160d3486-f71c-4575-84e7-85dc64b3222f.
Full textNdeze, Michel. "Provenance variation in Maesopsis eminii Engl." Thesis, Bangor University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297671.
Full textMoura, V. P. G. "Provenance variation of Eucalyptus camaldulensis Dehnh. in Brazil." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371566.
Full textDia, Aline. "Sediments et evolution geochimique (evolution de la croute continentale et etude de la limite cretace-tertiaire) : contraintes apportees par l'analyse isotopique (neodyme et plomb) et les teneurs en elements traces." Paris 7, 1988. http://www.theses.fr/1988PA077050.
Full textSagaram, Madhulika. "Variation in ecogeographical traits of pecan cultivars and provenances." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1579.
Full textFerreira, Inês Lima Correia Amorim. "Contribution to the knowledge of provenance effect on cork oak (Quercus suber L.) performance within the scope of the Reinfforce Project." Master's thesis, ISA/UL, 2018. http://hdl.handle.net/10400.5/17815.
Full textCork oak (Quercus suber L.) is distributed in the western part of the Mediterranean Basin, occurring across a wide range of environmental conditions and thus, it has the potential to exhibit a larger intraspecific variation in morphological and functional traits. Significant differences among populations of cork oak have been reported for several traits related to acorn size, growth, and functional traits related to leaf pest damage resistance, drought and cold tolerance. The central purpose of this study was to investigate the inter-provenance variability of cork oak in 4-year-old seedlings. This study was carried out at the arboretum of Tapada da Ajuda (planted in 2012) located in Lisbon, Portugal; between January and July 2016. This is within of the Reinfforce’s arboreta network, which aims to address the adaptability of forest species in the European Atlantic region to climate change. The variation in budburst timing, growth, morphological and physiological traits was compared for six contrasting cork oak provenances from the natural distribution area of the species. Regarding timing of budburst, Italian and French (Pyrenees) provenances from the eastern part of the natural range tended to burst earlier than French provenance (Landes) from the western part. Regarding growth, Spanish provenance exhibited one of the lowest total height and Moroccan exhibited one of the lowest basal diameter. Moroccan exhibited one of the lowest height growth during the study period. Both provenances above mentioned exhibited lower increases in basal diameter. Regarding leaf morphology, Moroccan exhibited one of the highest leaf size and specific leaf area. Regarding physiological traits, Moroccan consistently revealed one of the lowest relative and absolute foliar chlorophyll (Chl) content as well as Chl a/b ratio. Seedlings did not exhibit damage at the photosystem II level in January, suggesting that cold-induced photoinhibition of PSII during winter did not occur in this study. All seedlings exhibited signs of photosynthetic decline in mid-March. The Fv/Fm ratio was a good indicator of leaf senescence. The results of the simulation tests of late spring frost were inconclusive. However, Spanish and Italian provenances exhibited low leaf cell membrane injury, determined by relative electrolyte leakage, suggesting lower freezing sensibility. The existence of significant differences among provenances reveals the possibility of selection at the provenance level for (re)forestation actions
N/A
Akhter, Shaheen. "The provenance variation in natural durability of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367387.
Full textWright, Jeffery Alan. "Provenance variation in wood characteristics of Pinus caribaea Morelet and P. oocarpa Scheide." Thesis, University of Oxford, 1987. http://ora.ox.ac.uk/objects/uuid:b5f95b58-5a9c-41c2-b058-89c3614740d2.
Full textBelonger, Paul J. "VARIATION IN SELECTED JUVENILE WOOD PROPERTIESIN FOUR SOUTHERN PROVENANCES OF LOBLOLLY PINE." NCSU, 1998. http://www.lib.ncsu.edu/theses/available/etd-19981027-102102.
Full textBELONGER, PAUL JAMES. Variation of selected juvenile wood properties in four southern provenances of loblolly pine. (Under the direction of Steven E. McKeand.)Gravimetric wood density, x-ray densitometry, and latewood tracheids were used to investigate the relative importance of genetic and environmental effects on various assessments of wood density, tracheid characteristics, and growth traits in loblolly pine (Pinus taeda L.). Breast-height wood samples were taken from four 12-year-old plantings of a genetics trial that included approximately 50 open-pollinated families of loblolly pine from diverse sources. The densitometry and tracheid analysis included wood samples from only two of the test sites and assessed variation in 51 families, and 38 families, respectively. Moderate provenance differences, but strong family and environmental differences were found for wood density and volume, and the pooled genetic correlation between volume and density was -0.30. The Atlantic Coastal and Lower Gulf sources had higher average wood density than the Marion County and Gulf Hammock sources, and the Lower Gulf source had the lowest stem volume. Provenance variation in wood density was not consistent with geographic trends indicating a need for field testing in the area of intended deployment. Location effects were very important and sites which promoted high volume production also appeared to cause low wood density. Strategies are available to combat the unfavorable negative environmental correlation (-0.91, P < 0.01) between stem volume and wood density. Provenance variation was important for disk densities of early ring segments, but diminished with age and was not significant (P > 0.10) beyond the segment consisting of rings 3-6. Pooled narrow-sense heritability estimates for the consecutive-ring group disk densities ranged from 0.142 to 0.225, and all groups were highly correlated with average (tree) disk density (rA > 0.90). Mean latewood density and mean latewood percent both showed a strong positive genetic correlation with average disk density and the disk density of the ring 3-5 segment. Early selection for disk density can be effective.The transition to "mature" wood occurred at ring number 5.9 at the flatwoods location with higher wood density and ring number 8.9 at the upland test site with lower density. The point of transition also showed a strong provenance component (P < 0.05); the higher density Atlantic Coastal and Lower Gulf Coastal Plain sources transitioned sooner than the lower density Gulf Hammock and Marion County sources. Trachied length, total diameter, lumen diameter, and cell wall thickness were measured using outer-ring latewood tracheids. Of the trachied traits, only cell wall thickness showed a marginal location effect (P < 0.10). Measured in the middle-third of the cells, tracheids sampled at the Florida location were about 11% larger in total diameter, lumen diameter, and cell wall thickness, but no difference was detected for tracheid length. Provenance differences were strongest for cell wall thickness (P < 0.01) and marginally important for tracheid length (P < 0.16) and total cell diameter (P < 0.18).Variation among families within provenances was large (P < 0.01 for all tracheid traits) and resulted in relatively high narrow-sense heritability estimates of 0.58 for length, 0.34 for total diameter, 0.22 for lumen diameter, and 0.37 for cell wall thickness. The genetic correlations among these traits were all greater than 0.69 except the correlation between length and lumen diameter which was 0.42. Measurement of tracheid length can be used to assess family differences for cell diameter and cell wall thickness.None of the tracheid traits were strongly correlated with average disk density or the disk density of rings 3-5. Therefore, genetic selection for high average density in 10 to 12 year-old loblolly pines from the provenances studied here will not produce a predictable pattern in the character of outer-ring latewood tracheids.
Bengtsson, Rune. "Variation in common lime (Tilia x europaea L.) in Swedish Gardens of the 17th and 18th centuries /." Alnarp : Department of Landscape Management and Horticultural Technology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200564.pdf.
Full textThomas, Barbara R. "Regional, provenance and family variation in cold hardiness of western white pine (Pinus monticola Dougl. ex. D. Don)." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28995.
Full textForestry, Faculty of
Graduate
Kantarl, Mustafa. "Intraspecific variation in the IUFRO 16 year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) : Provenance-progeny trial in Haney, British Columbia." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27495.
Full textForestry, Faculty of
Graduate
Jibo, Abdullahi Umar. "Variation in drought tolerance and morphological plasticity among two provenances of Acacia senegal (Senegalia senegal) seedling in North Eastern Nigeria." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227119.
Full textSotelo, Montes Alcira del Carmen. "Variation génétique des caractéristiques de croissance et du bois de Capirona (Calycophyllum spruceanum) provenant de l'Amazonie péruvienne." Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/23993/23993.pdf.
Full textA provenance/progeny test of Calycophyllum spruceanum was established in one watershed in the Peruvian Amazon in order to (a) evaluate genetic variation in tree growth (height, diameter) and wood properties (density, color, shrinkage, ultimate crushing strength (σL) and static compliance coefficients (s11) in longitudinal compression, and dynamic s11 in the longitudinal direction determined by ultrasound), (b) estimate the proportion of the variation under genetic control, (c) estimate the effect of selection for growth on wood properties, and (d) determine the radial variation in wood density (by microdensitometry)and its correlation with tree growth. Tree height and stem diameter near ground level were measured at 16, 28 and 39 months. Diameter at 1.3 m and wood properties were measured at 39 months. In general, the wood was relatively uniform in color, with average shrinkage and relatively high strength and stiffness. Significant variation due to families within provenances and/or provenances was found in tree growth, wood density, and some color, shrinkage, strength and stiffness characteristics. In general, families accounted for more variation than provenances. Heritability was moderately high for basic wood density, shrinkage, strength, and stiffness determined by the static s11, and relatively low for growth traits, wood color, coefficient of anisotropy and stiffness determined by the dynamic s11. The heritability of growth traits, wood density, color and shrinkage was generally higher in the planting zone where trees grew most rapidly. Genetic correlations indicated that (a) selecting faster-growing trees would result in denser wood; (b) the selection of faster-growing trees with denser wood would result in stronger and stiffer wood, without a significant effect on its color, but would increase the shrinkage. In addition, wood density increased significantly from pith to bark, especially in the zones where trees grew more rapidly. Phenotypic correlations suggested that selecting faster-growing trees would result in greater radial variation in wood density. Finally, the non-destructive methods used were very effective for studying wood quality in this species.
Danusevicius, Darius. "Early genetic evaluation of growth rhythm and tolerance to frost in Picea abies (L.) Karst /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5637-1.pdf.
Full textBužinskas, Linas. "Paprastosios eglės skirtingų kilmių fenotipinių požymių kintamumas Agurkiškės bandomuosiuose želdiniuose." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050616_123722-31921.
Full textBaraket, Sami. "Quelques résultats sur des équations aux dérivées partielles non linéaires provenant de problèmes géométriques." Cachan, Ecole normale supérieure, 1994. http://www.theses.fr/1994DENS0012.
Full textDurufle, Harold. "Production et traitement de données omiques hétérogènes en vue de l'étude de la plasticité de la paroi chez des écotypes de la plante modèle Arabidopsis thaliana provenant d'altitudes contrastées." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30219/document.
Full textGlobal warming is a current issue of great concern because of its potential effects on biodiversity and the agricultural sector. Better understanding the adaptation of plants to this recent phenomenon is therefore a major interest for science and society. The study of natural populations from an altitude gradient allows correlating a set of climatic conditions (temperature, humidity, radiation, etc...) with phenotypic traits. These different populations are considered as adapted to their climatic conditions in natura. By cultivating these plants under standardized laboratory conditions (light intensity, substrate, temperature, watering, etc.), the observed phenotypic variability, is essentially due to the genetic variability intrinsic to each genotype. The growth of these same plants by changing a single variable, for example temperature, makes possible to highlight a characteristic phenotype. This phenotype may be an acclimation response of a relevant genome. The WallOmics project aims at characterizing the adaptation of plants to altitude by studying natural populations of Arabidopsis thaliana from the Pyrenees. The molecular actors of the adaptation of plants are still poorly described, but it appears that the plant cell wall could play an important role in this process. Indeed, it represents the skeleton of plants and gives them rigidity while representing a dynamic and sensitive external barrier to environmental changes. Its structure and composition can be modified at any time. It is also possible to say that the plant cell wall gives the general shape of the plant (size, shape, density, etc.), that is its observable phenotype. This project will focus mainly on the study of the plant cell wall. New technologies have enabled the emergence of the so-called "omics" data, large sets of data at multiple biological levels, such as ecological, phenotypic, metabolomic, proteomic, transcriptomic and genomic data. The study and the links between these data have favoured the development of integrative approaches aimed at establishing a response at several scales. It is precisely by this type of non- mechanistic approach that the WallOmics project has contributed to establish the molecular players of plant cell wall modifications in the global warming context
Assad, Amanda Aparecida Vianna. "Effect of seed provenances on anual increment, physicomechanical properties and anatomical features of 30 – year - old Balfourodendron riedelianum wood." Universidade Federal de São Carlos, 2017. https://repositorio.ufscar.br/handle/ufscar/9162.
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From increase of technology in forest products area, studies of native species are essential for development of industry and reforestation. As most of wood used for various applications comes from native forests, especially Amazon forest, exploitation without due legal measures puts at risk the wood conservation this Brazilian biome.In this context, studies are needed to characterize and study wood native quality indicating its most appropriate use. As an example we mention Balfourodendron riedelianum and the study of its anatomical, physical and mechanical properties with information about its age, seed provenance and planting data.The present study had as goals: a) determine the effect of seed provenances on tree volume, volume per hectare and mean annual increment of Balfourodendron riedelianum. b) determine variations in properties and anatomy in function of seed provenances and radial variation. c) characterize physical-mechanical properties to know wood strength and strength class. B. riedelianum seed lings were grown from the seeds planted in 1984 in the state of São Paulo, cities of Gália and Bauru, and in the state of Paraná, city of Alvorada do Sul. We felled 36 randomly selected trees, 12 from each seed provenance. A butt logwith1.3 m long was removed from the base of each tree, and a central plank was cut to obtain specimens for physical and mechanical properties and anatomical features. Three radial positions were established: the nearest part of trunk center, designated as pith, a middle position, and a position close to the bark, designated as bark.From standardized methodologies, the effect of seed provenance on tree volume, volume per hectare and average annual increment of Balfourodendron riedelianum were determined. Followed by determination of anatomical properties variations founded due seed provenances and radial variation. We also performed characterization of physical-mechanical properties by determination of wood strength and Strength class. We conclude that there were variations in wood volume and properties corroborating that trees were influenced by seed provenance. Alvorada do Sul wood presented higher strength and homogeneity compared to the other two provenances, whereas Gália and Bauru had the highest average annual increment.
Com o crescimento da tecnologia na área de produtos florestais o estudo de espécies nativas é essencial para o desenvolvimento da indústria e o reflorestamento.Como grande parte da madeira empregada para as mais diversas aplicações é proveniente de florestas nativas, especialmente a floresta amazônica,a exploração sem as devidas medidas legais coloca em risco a conservação da madeira deste bioma brasileiro. Neste contexto são necessários estudos que caracterizem e avaliem a qualidade de madeiras nativas indicando seu uso mais adequado. Como exemplo cita – se oBalfourodendron riedelianum e o estudo de suas propriedades anatômicas, físicas e mecânicas com informações quanto à sua idade, origem das sementes e dados do plantio. O presente estudo teve como objetivos: a) determinar e avaliar o crescimento em volume e incremento anual de Balfourodendron riedelianum oriundo de três procedências de sementes aos 30 anos de idade; b) caracterizar a madeira de Balfourodendron riedelianum quanto às suas propriedades física, mecânicas e anatômicas para determinação de sua qualidade; c) verificar se existem alterações nas propriedades em função das diferentes procedências das sementes e variação radial. As mudas das árvores de Balfourodendron riedelianum foram plantadas a partir de sementes de polinização aberta no ano de 1984, coletadas de três populações naturais de diferentes regiões: Alvorada do Sul-PR, Gália-SP e Bauru-SP e plantadas na Estação Experimental de Luiz Antônio (EELA). Foram coletadas 36 árvores, 12 árvores de cada procedência, um tronco basal de 1,30m foi retirado de cada árvore e em seguida retirado amostras de três posições radiais, sendo próximo à medula, região intermediária e próximo à casca. A partir de metodologias comumente empregadas foram determinados o efeito da procedência das sementes em volume da árvore, volume por hectare e incremento médio anual de Balfourodendron riedelianum. Seguido pela determinação das variações na estrutura da madeira decorrentes das procedências das sementes e da variação radial. Também foi realizada a caracterização das propriedades físico-mecânicas determinando a resistência da madeira e a classe de resistência. Concluiu - se que ocorreram variações no volume e nas propriedadesfisicomecânicas da madeira confirmando que as árvores foram influenciadas pela procedência. A madeira proveniente de Alvorada do Sul apresentou maior resistência e homogeneidade comparada as outras duas procedências, porém Gália e Bauru apresentaram maior incremento médio anual.
Bouderrah, Mohamed. "Comparaison de deux modes de vitropropagation à partir de vitrosemis d'eucalyptus camaldulensis provenance lake albacutya : Micropropagation à partir de bourgeons axillaires, micropropagation à partir de bourgeons adventifs, et étude de la variabilité." Nancy 1, 1988. http://www.theses.fr/1988NAN10002.
Full text(9802604), Subhash Hathurusingha. "Potential of Beauty Leaf Tree (Calophyllum inophyllum L) as a biodiesel feedstock." Thesis, 2012. https://figshare.com/articles/thesis/Potential_of_Beauty_Leaf_Tree_Calophyllum_inophyllum_L_as_a_biodiesel_feedstock/13462325.
Full text何坤益. "= Genetic variation of casuarina provenance grown in Taiwan." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/19123493367077641285.
Full textHONG, PEI-YUAN, and 洪培元. "Isozyme variations in different provenances of zelkova serrata." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/95950105724501247340.
Full textLi, Jian Lin, and 李建霖. "Allozyme variation of different provenances of cyclobalanopsis glauca." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/06975334556783637571.
Full textZHANG, GUO-QHEN, and 張國楨. "Isozyme variation in different provenances of Cunninghamia konishii hay." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/11227258393389627396.
Full textLIN, HAO-ZHEN, and 林澔貞. "Isoperoxidase variation in provenances and the tissues of Alnus formosana Mak." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/56229625646501049400.
Full textHan, Ming-Chi, and 韓明琦. "Studies on 12 years growth variation of provenances of Casuarina equisetifolia in Taiwan." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/96054248593803870574.
Full text中興大學
森林學系所
94
Casuarinas equisetifolia has a wide nature range. It’s still the most important trees of windbreak on the first coast line in Taiwan because of it has few and scattered form let winds flow and it can fixed flow sand and to adapt drought. In the 1992, Taiwan had a cooperation international provenance test of C. equisetifolia with the Winrock International Agriculture Development Research Institute. This report study on the variation of provenance for analysis significance tests, assess broad-sense heritability and variance components to understand the genetic characteristic. Test the Pearson’s correlation of growth and applied regression analysis to try to find the best provenance and the age for early selection. To Applied the factor analysis with principal components solution for morphological characteristic of joint assessed to understand characteristics of provenances. Understand the correlation and space distribution between the provenances that to apply the factor analysis with principal components solution and Cluster analysis. The result of that the 28 provenances had large environmental effect both in Sihhu and Penghu. Height, DBH and survival percentage had a significant between provenances in almost age classes. Except the survival value 0.9 in Sihhu on broad-sense heritability, the value of others between 0.4~0.7. Result of the variance components, the genetic variance had effected from environmental variance. Propose to 5 year can be the early selection age, Papua New Guinea (No. 12)、Philippines (No. 23)、Sabah (No. 18, 17)、Australia (No. 1) are the best provenances in Sihhu. The five characteristic from the morphological characteristic of joint assess: coarse and long in branchlets or branches, large height and DBH as small stem damage, great axis persistence and stem straightness, large angle of branches. The geographic variation exists among provenances from the provenances variation. On the space distribution, natural population from Australia/Pacific and South-East Asia had two forming a separate group and there had no significant cline in provenances.
Tiao, Chen Chen, and 陳政道. "Using matK sequence data to unravel genetic variation of Casuarina international Provenances and Casuarina grown in Taiwan." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/07460116119377547818.
Full text國立中興大學
生命科學系
92
Abstract Casuarina has been introduced and cultivated in Taiwan for a long time. The classification of the plant grown in Taiwan is difficult. The area of cultivation is wide spread and in some areas they have escaped from cultivation. Whether there is introgressive hybridization between species still remain to be clarified. The matK sequence of chloroplast genome was employed for the study of genetic relationship in Casuarina in the present study. Compared to other sequences, matK has faster evolutionary rate and more non-synonymous substitutions and indel events. The sequence is suitable for the study of relation between species. The materials used in the present study includes native provenances of C. equisetifolia, C. glauca, C. cunnunghamiana, cultivated provenances of C. equisetifolia, and the Casuarina cultivated on the coast of Taiwan. When the same sequences of different individuals were treated as a haplotype, different individuals of a provenance belong to the same haplotype in C. glauca and C. cunninghamiana while it is different in C. equisetifolia. Modeltest software was used to find the best DNA model based on hLRT and AIC test methods and the best model found was used in Bayesian Inference and Maximum Likelihood methods to obtain best evolution trees. Among three species studied, C. glauca and C. cunninghamiana have closer relationship. The evolution trees resulted from Bayesian Inference and Maximum Likelihood analyses indicated that there is resolution among species. However, the resolution within species is poor. The result of the study including native provenances of three species and cultivated provenances of C. equisetifolia indicated that all samples of cultivated provenances were clustered within the clade of C. equisetifolia. There is no evidence of hybridization in the samples of cultivated provenances. The result of the study including native provenances of three species and Casuarina grown in Taiwan indicated that among nine samples that are morphologically intermediate between C. equisetifolia and C. glauca (part of samples from Port of Taichung, Simun, Funyien, Yienliao, and Nanau), three samples were clustered within the clade of C. glauca indicating that these three samples may be the result of hybridization between maternal C.glauca an paternal C. equisetifolia. The remaining six intermediate samples clustered within the clade of C. equisetifolia may be the result of hybridization between maternal C. equisetifolia and paternal C. glauca.
"Variation génétique des caractéristiques de croissance et du bois de Capirona (Calycophyllum spruceanum) provenant de l'Amazonie péruvienne." Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/23993/23993.pdf.
Full textBoateng, Kennedy. "Red alder (alnus rubra) defense mechanisms against western tent caterpillar (malacosoma californicum) defoliation." Thesis, 2019. http://hdl.handle.net/1828/10821.
Full textGraduate
2020-04-18