2022-2023 ANNUAL REPORT

Past Annual Reports

Camcore Book

Conservation and Testing of Tropical Subtropical Forest Tree Species by the camcore cooperative (2000)

This book describes 11 different pines in Central America and Mexico that Camcore has worked with over the years. It has a number of color photos and tables about collection sites as well as early results of many Camcore trials. The book can be obtained by contacting the Camcore office. A nominal fee will be charged for shipping. Email us at camcore@camcore.org to request a copy of the book.

Academic Publications

2023

Luis Ibarra, Gary Hodge and Acosta JJ. 2023. Quantitative Genetics of a Hybrid Population of Eucalyptus nitens x Eucalyptus globulus: Estimation of Genetic Parameters and Implications for Breeding Strategies. Forests 2023, 14, 381. https://doi.org/10.3390/f14020381

Castillo MS, Acosta JJ, Hodge GR, Vann MC, Lewis RS. 2023. Analysis of alkaloids and reducing sugars in processed and unprocessed tobacco leaves using a handheld near infrared spectrometer. Journal of Near Infrared Spectroscopy. 2023;0(0). https://doi:10.1177/09670335221148594

2022

Darr, M.N., D.R. Coyle, and R.M. Jetton. 2022. Arthropod and disease management in Fraser fir (Pinales: Pinaceae) Christmas trees in the southeastern United States. Journal of Integrated Pest Management 13(1): 8; 1-17.

Bohannon, G.R., C.L. Smith, R.M. Jetton, and K.L.F. Oten. 2022. Phenology and voltinism of emerald ash borer (Coleoptera: Buprestidae) in central North Carolina. Environmental Entomology 51(6): 1077-1085.

Kropat M, Laleicke PF, Acosta JJ (2022). Towards Inline Prediction of Color Development for
Wood Stained with Chemical Stains Using Near-Infrared Spectroscopy. Forest Products Journal
(2022) 72 (2): 130–139. https://doi.org/10.13073/FPJ-D-22-00021

Mostert-O’Neill MM, Reynolds SM, Mphahlele MM, Van den Berg G, Verryn SD, Acosta JJ,
Borevitz JO, Myburg AA. (2022) Genomic signatures of artificial selection during early
domestication of a wood fibre crop. New Phytologist 235:1944-1956. https://doi.org/10.1111/nph.18297

Perek M, Hodge GR, Tambarussi EV, Bienarski FA, Hillig E, Dias A and Acosta JJ (2022).
Predicted genetic gain for growth traits and wood resistance to drilling in Pinus maximinoi and
Pinus tecunumanii species with new perspectives for Brazilian genetic improvement. Crop
Breeding and Applied Biotechnology 22(2) 2022. https://doi.org/10.1590/1984-70332022v22n2a23

Rocha LF, Benatti TR, de Siqueira L, de Souza ICG, Bianchin I, de Souza AJ, Fernandes ACM, Oda S, Stape JL, Yassue RM, Carvalho HF, Müller NA, Fladung M, Acosta JJ, Fritsche-Neto R, Tambarussi EV. 2022. Quantitative trait loci related to growth and wood quality traits in Eucalyptus grandis W. Hill identified through single- and multi-trait genome-wide association studies. Tree Genetics & Genomes 18, 38. https://doi.org/10.1007/s11295-022-01570-x

Tambarussi EV (2022). Quantitative trait loci related to growth and wood quality traits in
Eucalyptus grandis W. Hill identified through single- and multi-trait genome-wide association
studies. Tree Genetics & Genomes 18, 38 (2022). https://doi.org/10.1007/s11295-022-01570-x

Thomas, A., D. Tilotta, J. Frampton, and R. Jetton. 2022. Sesquiterpene induction by the balsam woolly adelgid (Adelges piceae) in putatively resistant Fraser fir (Abies fraseri). Forests. 13, 716.

2021

Bakken, K.A., J.A. Forrester, D.J. Mladenoff, Z. Leggett, J. Juzwil, and R.M. Jetton. 2021. Mortality patterns following a hickory decline event: is density reduction key to maintain bitternut hickory? Forest Ecology and Management. 485: 118956.

Caballero M, Lauer E, Bennett J, Zaman S, McEvoy S, Acosta JJ, Jackson C, Townsend L, Eckert A, Whetten R, Loopstra C, Holliday J, Mandal M, Wegrzyn J, and Isik F (2021). Toward genomic selection in Pinus taeda: Integrating resources to support array design in a complex conifer genome. Applications in Plant Sciences. 9 (6): e11439. https://doi.org/10.1002/aps3.11439

Jackson C, Christie N, Reynolds S, Marais C, Tii-kuzu Y, Caballero M, Kampman T, Visser E, Naidoo S, Kain D, Whetten R, Isik F, Wegrzyn J, Hodge GR, Acosta JJ, Myburg AA (2021). A genome-wide SNP genotyping resource for tropical pine tree species. Molecular Ecology Resources. https://doi.org/10.1111/1755-0998.13484

Lu Y, Payn KG, Pandey P, Acosta JJ, Heine AJ, Walker TD, and Young S. 2021. Hyperspectral imaging with cost-sensitive learning for high-throughput screening of loblolly pine (Pinus taeda L.) seedling for freeze tolerance. Transactions of the ASABE. https://doi.org/10.13031/trans.14708

Lu Y, Walker TD, Acosta JJ, Young S, Pandey P, Heine AJ, and Payn KG (2021). Prediction of Freeze Damage and Minimum Winter Temperature of the Seed Source of Loblolly Pine Seedlings Using Hyperspectral Imaging. Forest Science. 2021. https://doi.org/10.1093/forsci/fxab003

Nel A, Acosta JJ, Hodge GR (2021). Initial growth results comparing first generation F1 and advanced-generation F2 Pinus patula x Pinus tecunumanii inter-specific hybrid families. Southern Forests: a Journal of Forest Science. https://doi.org/10.2989/20702620.2021.1926370

Pandey P, Payn KG, Lu Y, Heine AJ, Walker TD, Acosta JJ, & Young S. 2021. Hyperspectral Imaging Combined with Machine Learning for the Detection of Fusiform Rust Disease Incidence in Loblolly Pine Seedlings. Remote Sensing: 13(18):3595. https://doi.org/10.3390/rs13183595

Thomas, A.M., M.E. Johns, and R.M. Jetton. 2021. Characterization of a disjunct population of eastern hemlock (Tsuga canadensis) and surrounding plant communities in the North Carolina Piedmont after 65 years of forest change. Southeastern Naturalist. 20(3): 377-398.

Whittier WA, Hodge GR, Lopez J, Saravitz C, Acosta JJ. (2021) The use of near infrared spectroscopy to predict foliar nutrient levels of hydroponically grown teak seedlings. Journal of Near Infrared Spectroscopy, 29(5):301-310. doi:10.1177/09670335211025649

2020

Acosta JJ, Castillo MS, Hodge GR (2020). Comparison of Desktop and Handheld Near-Infrared Spectroscopy Devices to Determine Forage Nutritive Value. Crop Science. 2020; 60: 3410– 3422. https://doi.org/10.1002/csc2.20264

Bekewe PE, Castillo MS, Acosta JJ, Rivera R. (2020), Defoliation management effects on nutritive value of ‘performer’ switchgrass. Crop Science. 2020; 60: 1682– 1689. https://doi.org/10.1002/csc2.20036

Hodge GR, Acosta JJ (2020). An Algorithm for Genetic Analysis of Full-Sib Datasets with Mixed-Model Software Lacking a Numerator Relationship Matrix Function, and a Comparison with Results from a Dedicated Genetic Software Package. Forests 2020, 11, 1169. https://doi.org/10.3390/f11111169

Martins, GS, Yuliarto M, Antes R, Sabki, Prasetyo A, Unda F, Mansfield SD, Hodge GR, Acosta JJ (2020). Wood and Pulping Properties Variation of Acacia crassicarpaCunn. ex Benth. and Sampling Strategies for Accurate Phenotyping. Forests 2020, 11, 1043. https://doi.org/10.3390/f11101043

Matallana-Ramirez, L.P., K. Goode, M. Bertone, P. Jansta, R. Burks, R. Jetton, and J. Frampton. 2020. Assessing Megastigmus specularis (Megastigmidae) seed infestation patterns in a Fraser fir (Abies fraseri) clonal seed orchard of the Southern Appalachians. Scandinavian Journal of Forest Research 35: 445-455.

Matallana-Ramirez, L., K. Goode, N. Moore, R. Jetton, and J. Frampton. 2020. A simple laboratory rearing method for chalcid wasp. Protocols.io. dx.doi.org/10.17504/protocols.io.bb3riqm6.

Mayfield, A.E. III and R.M. Jetton. 2020. Differential sunlight exposure affects settling behavior of hemlock woolly adelgid crawlers. Agricultural and Forest Entomology 22: 309-318.

Miniat, C.F., D.R. Zietlow, S.T. Brantley, C.L. Brown, A.E. Mayfield III, R.M. Jetton, J.R. Rhea, and P. Arnold. 2020. Physiological responses of eastern hemlock (Tsuga canadensis) to light, adelgid infestation, and biological control: implications for hemlock restoration. Forest Ecology and Management. 460: 117903.

Mostert‐O’Neill MM*, Reynolds SM, Acosta JJ, Lee DJ, Borevitz JO, Myburg AA (2020). Genomic evidence of introgression and adaptation in a model subtropical tree species, Eucalyptus grandis. Mol Ecol. 2020; 00: 1– 14. https://doi.org/10.1111/mec.15615

Tyrmi JS, Vuosku J, Acosta JJ, Li Z, Sterck L, Cervera MT, Savolainen O, Pyhäjärvi T (2020). Genomics of Clinal Local Adaptation in Pinus sylvestris Under Continuous Environmental and Spatial Genetic Setting. G3: Genes, Genomes, Genetics. vol. 10 no. 8 2683-2696. https://doi.org/10.1534/g3.120.401285

2019

Acosta JJ, Fahrenkrog AM, Neves LG, Resende MFR, Dervinis C, Davis JM, Holliday JA, Kirst M (2019). Exome Resequencing Reveals Evolutionary History, Genomic Diversity, and Targets of Selection in the Conifers Pinus taeda and Pinus elliottii, Genome Biology and Evolution, Volume 11, Issue 2, 1 February 2019, Pages 508-520. https://doi.org/10.1093/gbe/evz016

Jetton, R.M. and W.A. Whittier. 2019. Effect of seed coat sterilization and photoperiod treatments on the germination of Atlantic white-cedar seeds. Tree Planters’ Notes 62: 14-19.

Jetton, R.M., Whittier, W.A., Crane, B.S., and Hodge, G.R. 2019. A Range-Wide Seed Collection to Support the Genetic Resource Conservation of Atlantic White-Cedar. Tree Planters’ Notes, 62 (1, 2) (2019), 5-13.

Lstibůrek, M. S. Schueler, Y.A. El-Kassaby, G.R. Hodge, J. Stejskal1, J. Korecký, P. Škorpík, H. Konrad and T. Geburek. 2019. In Situ Genetic Evaluation of European Larch Across Climatic Regions Using Marker-Based Pedigree Reconstruction. Frontiers in Genet. 11:28.

Potter, K.M., M.E. Escanferla, R.M. Jetton, G. Man, and B.S. Crane. 2019. Prioritizing the conservation needs of United States tree species: evaluating vulnerability to forest insect and disease threats. Global Ecology and Conservation 18.

Potter, K.M., M.E. Escanferla, R.M. Jetton, and G. Man. 2019. Important insect and disease threats to United States tree species and geographic patterns of their potential impacts. Forests 10: 304.

Whittier, W.A., Hodge, G.R., Lopez, J.L., and Sarvitz, C. 2019. Studies to Evaluate Hydroponic Culture of Teak. Tree Planters’ Notes, 62 (1, 2) (2019), 44-51.

2018

de Moraes BFX, dos Santos RF, de Lima BM, Aguilar AM, Missiaggia AA, da Costa Dias D, Rezende GDPS, Gonçalves FMA, Acosta JJ, Kirst M, Resende MFR, Muñoz PR (2018). Genomic selection prediction models comparing sequence capture and SNP array genotyping methods. Mol Breeding 38: 115. https://doi.org/10.1007/s11032-018-0865-3

Naidoo S, Christie N, Acosta JJ, Mphahlele M, Payn KG, Myburg AA, Külheim C (2018). Terpenes associated with resistance against the gall wasp, Leptocybe invasa, in Eucalyptus grandis. Plant Cell Environ. 2018; 41:1840–1851. https://doi.org/10.1111/pce.13323

Lapham, M., C.F. Ford, A.E. Mayfield III, R.M. Jetton, S.T. Brantley, D.R. Zietlow, C. Brown, and J.R. Rhea. 2018. Shade and hemlock woolly adelgid infestation increase eastern hemlock foliar nutrient concentration. Forest Science.

Lopez, J.L., R.C. Abt, W.S. Dvorak, G.R. Hodge, and R. Phillips. 2018. Tree breeding model to assess financial performance of pine hybrids and pure species: deterministic and stochastic approaches for South Africa. New Forests.

Whittier, W.A. 2018. Nutrient Disorder Foliar Symptoms, Foliar Nutrient Levels and Predictive Near-infrared Spectroscopy Nutrient Models of Teak (Tectona grandis L.f.). NCSU Master of Science Forestry Thesis.

2017

Brantley, S.T., A.E. Mayfield III, R.M. Jetton, C.F. Miniat, D.R. Zietlow, C. Brown, and J.R. Rhea. 2017. Elevated light levels reduce hemlock woolly adelgid infestation and improve carbon balance of infested eastern hemlock seedlings. Forest Ecology and Management.

Bucholz, E., J. Frampton, R. Jetton, D. Tilotta, and L. Lucia. 2017. Effect of different headspace concentrations of bornyl acetate on fecundity of green peach aphid and balsam woolly adelgid. Scandinavian Journal of Forest Research.

de Waal, L., R.G. Mitchell, G.R. Hodge and P.W. Chirwa. 2017. The use of field and artificial freezing studies to assess frost tolerance in natural populations of Pinus oocarpa. Southern Forests: a Journal of Forest Science.

Hansen, O.K., S. Changtragoon, B. Ponoy, J. Lopez, J. Richard, and E.D. Kjær. 2017. Worldwide translocation of teak – origin of landraces and present genetic base. Tree Genetics and Genomes.

Hastings, J.M., K.M. Potter, F.H. Koch, M. Megalos, and R.M. Jetton. 2017. Prioritizing conservation seed banking locations for imperiled hemlock species using multi-attribute frontier mapping. New Forests.

Hongwane, Phillip, G. Mitchell, A. Kanzler, S. Verryn, J. Lopez, and P. Chirwa. 2017. Alternative pine hybrids and species to Pinus patula and P. radiata in South Africa and Swaziland, Southern Forests. A Journal of Forest Science.

Lstiburek, M, Y.A. El-Kassaby, T. Skroppa, G.R. Hodge, J.H. Sonstebo, A. Steffenrem. 2017. Dynamic gene-resource landscape management of Norway spruce: combining utilization and conservation. Frontiers in Plant Science.

Moraes, B.F.X.; Santos, R.F.,;Lima B.M.; Aguiar, A.M; Missiaggia, A.A.; Dias, D.; Rezende, G.D.; Gonçalves, F.M.; Acosta, J.J.; Kirst, M.; Resende, M.F.R.; Munoz, P.R. 2017. Comparing Sequence Capture and SNP-array genotyping methods for development of genomic selection prediction models. Molecular Breeding. Submitted.

Potter, K.M., A.R. Campbell, S.A. Josserand, C.D. Nelson, and R.M. Jetton. 2017. Population isolation results in unexpectedly high differentiation in Carolina hemlock (Tsuga caroliniana), an imperiled Southern Appalachian endemic conifer. Tree Genetics and Genomes.

Potter, K.M., R.M. Jetton, A. Bower, D.F. Jacobs, G. Man, V.D. Hipkins, and M. Westwood. 2017. Banking on the future: progress, challenges and opportunities for the genetic conservation of forest trees. New Forests.

2016

Hastings, J.M. 2016. Using climate and genetic diversity data to prioritize conservation seed banking for imperiled hemlock species. M.S. Thesis, NC State University, Raleigh, NC. 73 p.

2015

Hodge, G.R. and W.S. Dvorak. 2015. Provenance variation and within-provenance genetic parameters in Eucalyptus urophylla across 125 sites in Brazil, Colombia, Mexico, South Africa, and Venezuela. Tree Genetics and Genomes.

Jetton, R.M., Crane, B.S., Whittier, W.A. and Dvorak, W.S. 2015. Genetic Resource Conservation of Table Mountain Pine (Pinus pungens) in the Central and Southern Appalachian Mountains. Tree Planters’ Notes.

Lopez, J.L . 2015. Economic potential of pine hybrids: a case study for South Africa. PhD Dissertation, NC State University, Raleigh, NC.

Lstiburek, M, G.R. Hodge, and P. Lachout. 2015. Uncovering genetic information from commercial forest plantations: making up for lost time using “Breeding without Breeding”. Tree Genetics and Genomes.

Mayfield III, A.E., Reynolds, B.C., Coots, C.I., Havill, N.P., Brownie, C., Tait, A.R., and Hanula, J.L.,. Joséph, S.V., Galloway, A.B. 2014. Establishment, hybridization and impact of Laricobius predators on insecticide-treated hemlocks: Exploring integrated management of the hemlock woolly adelgid. Forest Ecology and Management.

Powers, Z., A. Mayfield, J. Frampton, and R. Jetton. 2015. Comparison of suspended branch and direct infestation techniques for artificially infesting hemlock seedlings with the hemlock woolly adelgid for resistance screening. Forests.

2014

Acosta, J.J., 2014. Genetic diversity and genome-wide selection studies in pines and Eucalyptus. Ph.D. dissertation, School of Forest Resources and Conservation, University of Florida. Gainesvile, FL.

Campbell, A.R. 2014. Assessing Carolina hemlock (Tsuga caroliniana Engelm.) population genetic structure anddiversity in the southern Appalachians using microsatellite markers. M.S. Thesis, NC State University, Raleigh, NC. 73 p.

Gapare, W.J. 2014. Merging applied gene conservation activities with advanced generation breeding initiatives: a case study of Pinus radiata D. Don. New Forests.

Hodge, G.R, and W.S. Dvorak. 2014. Breeding southern US and Mexican pines for increased value in a changing world. New Forests.

Jetton, R.M. 2014. Collecting seeds and managing insects: my career as a forest conservation biologist. CCES Highlights Magazine.

Jetton, R.M., Mayfied III, A.E., Powers, Z.L., 2014. Development of a Rain Down Technique to Artificially Infest Hemlocks with the Hemlock Woolly Adelgid (Hemiptera: Adelgidae). Journal of Insect Science.

Jetton, R.M., Robison, D.J., 2014. Effects of Artificial Defoliation on Growth and Biomass Accumulation in Short- Rotation Sweetgum (Liquidambar styraciflua L.) in North Carolina, USA.. Journal of Insect Science.

Jetton, R.M., Whittier, W.A., and Dvorak, W.S., 2014. Evaluation of stratification treatments for germinating seeds of Tsuga canadensis and Tsuga caroliniana for ex situ gene conservation. Southeastern Naturalist.

Kanzler, A., A.Nel, and C. Ford. 2014. Development and commercialisation of the Pinus patula × P. tecunumanii hybrid in response to the threat of Fusarium circinatum. New Forests.

Nel, A., G.R. Hodge, K.E. Mongwaketsi, and A. Kanzler. 2014. Genetic parameters for Fusarium circinatum tolerance within open-pollinated families of Pinus patula tested at screening facilities in South Africa and the USA. Southern Forests.

Oten, K.L.F., Merkle, S.A., Jetton, R.M., Smith, B.C., Talley, M.E., and Hain, F.P. 2014. Understanding and developing resistance in hemlocks to the hemlock woolly adelgid. Southeastern Naturalist.

Powers, Z.L. 2014. Evaluating techniques for artificially infesting hemlocks (Tsuga spp.) with the hemlock woolly adelgid (Adelges tsugae) for genotype resistance screening. M.S. Thesis, NC State University, Raleigh, NC 151 p.

2013

Amborella Genome Project (Acosta, J.J.), 2013. The Amborella genome and the evolution of flowering plants. Science.

Dvorak, W.S., Nel, A., Espinoza, J.A., 2013. Evidence of low-levels of natural introgression between Pinus jaliscana and P. oocarpa in an open-pollinated progeny trial using near-infrared spectroscopy. Forest Ecology and Managment.

Jetton, R.M., 2013. Saving hemlocks, one seed at a time. Chinquapin.

Jetton, R.M., Whittier, W.A., Dvorak, W.S., Rhea, J., 2013. Conserved Ex Situ Genetic Resources of Eastern and Carolina Hemlock: Eastern North American Conifers Threatened by the Hemlock Woolly Adelgid. Tree Planters’ Notes.

Leibing, C., Singer, J., van Zonneveld, M., Jarvis, A., Dvorak, W.S., 2013. Selection of Provenances to Adapt Tropical Pine Forestry to Climate Change on the Basis of Climate Analogs. Forests.

2012

Dvorak, W.S., 2012. The strategic importance of applied tree conservation programs to the forest industry in South Africa. Southern Forests.

Dvorak, W.S., 2012. Water use in plantations of eucalyptus and pines: a discussion paper from a tree breeding perspective. International Forestry Review.

Espinoza, J.A. Allen, H.L., McKeand, S.E., Dougherty. P.M., 2012. Stem sinuosity in Loblolly pine and nitrogen and calcium additions. Forest Ecology and Management.

Espinoza, J.A., Hodge, G.R., Dvorak, W.S., 2012. The potential use of near infrared spectroscopy to discriminate between different pine species and their hybrids. Journal of Near Infrared Spectroscopy.

Hodge, G.R., Dvorak, W.S., 2012. Growth potential and genetic parameters of four Mesoamerican pines planted in the Southern Hemisphere. Southern Forests.

Hodge, G.R., Dvorak, W.S., Tighe, M.E., 2012. Comparisons between laboratory and field results of frost tolerance of pines from the southern USA and Mesoamerica planted as exotics. Southern Forests.

Mitchell, R.G., Wingfield, M.J., Hodge, G.R., Steenkamp, E. Coutinho, T.A., 2012. Selection of Pinus spp. in South Africa for tolerance to infection by the pitch canker fungus. New Forests.

Mitchell, R.G., Wingfield, M.J., Hodge, G.R., Steenkamp, E. Coutinho, T.A., 2012. Susceptibility of provenances and families of Pinus maximinoi and Pinus tecunumanii to frost in South Africa. New Forests.

Mitchell, R.G., Wingfield, M.J., Hodge, G.R., Steenkamp, E. Coutinho, T.A., 2012. The tolerance of Pinus patula x Pinus tecunumanii, and other pine hybrids to Fusarium circinatum in greenhouse trials. New Forests.

Potter, K.M., Jetton, R.M., Dvorak, W.S., Hipkins, V.D., Rhea, J.R., Whittier. W.A., 2012. Widespread inbreeding and unexpected geographic patterns of genetic variation in Eastern hemlock (Tsuga canadensis), an imperiled North American conifer.Conservation Genetics.

Resende MFR, Munoz Del Valle PR, Acosta JJ, Resende MDV, Grattapaglia D, and Kirst M. (2011). Stability of genomic selection prediction models across ages and environments. BMC Proceedings, 2011, 5 (Suppl 7):O14. https://doi.org/10.1186/1753-6561-5-S7-O14