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United States Department of Agriculture

Agricultural Research Service

Research Project: Innovations That Improve the Efficiency and Effectiveness of Managing and Preserving Ex Situ Plant Germplasm Collections

Location: Plant Germplasm Preservation Research Unit

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)

Chloroplast heterogeneity and historical admixture within the genus Malus - (Peer Reviewed Journal)
Volk, G.M., Henk, A.D., Baldo, A.M., Fazio, G., Chao, C.T., Richards, C.M. 2015. Chloroplast heterogeneity and historical admixture within the genus Malus. American Journal of Botany. 102(7):1198-1208. DOI: 10.3732/ajb.1500095.
Identification of a highly successful cryopreservation method (droplet-vitrification) for petunia - (Peer Reviewed Journal)
Zhang, J., Huang, B., Zhang, X., Volk, G.M., Xin, X., Yin, G., He, J., Lu, X., Zhou, Y., Chen, X. 2015. Identification of a highly successful cryopreservation method (droplet-vitrification) for petunia. In Vitro Cellular and Developmental Biology - Plants. 51:445-451.
Conservation of the USDA-ARS National Plant Germplasm System Apple Collection using dormant bud cryopreservation - (Abstract Only)
Volk, G.M., Jenderek, M.M., Chao, C.T. 2015. Conservation of the USDA-ARS National Plant Germplasm System Apple Collection using dormant bud cryopreservation [abstract]. XIV Eucarpia Fruit Breeding and Genetics Symposium. Available: http://www.eucarpiafruit2015.org/wp-content/uploads/2014/06/03-poster-list.pdf.
Cryopreservation of in vitro-grown shoot tips of Chinese medicinal plant Atractylodes macrocephala Koidz. using a droplet-vitrification method - (Peer Reviewed Journal)
Zhang, J., Huang, B., Lu, X., Volk, G.M., Xin, X., Yin, G., He, J., Chen, X. 2015. Cryopreservation of in vitro-grown shoot tips of Chinese medicinal plant Atractylodes macrocephala Koidz. using a droplet-vitrification method. CryoLetters. 36(3):195-204.
Orthodoxy, recalcitrance and in-between: describing variation in seed storage characteristics using threshold responses to water loss - (Peer Reviewed Journal)
Walters, C.T. 2015. Orthodoxy, recalcitrance and in-between: describing variation in seed storage characteristics using threshold responses to water loss. Planta. 242(2):397-406.
Developing quantitative seed sampling protocols using simulations: A reply to comments from Guja et al. and Guerrant et al. - (Other)
(18-Mar-15)
Widespread applications of citrus cryopreservation - (Trade Journal)
Volk, G.M. 2015. Widespread applications of citrus cryopreservation. Citrograph. 6(2):42-44.
The vulnerability of US apple (Malus) genetic resources - (Peer Reviewed Journal)
Volk, G.M., Chao, C.T., Norelli, J.L., Brown, S.K., Fazio, G., Peace, C., Mcferson, J., Zhong, G., Bretting, P.K. 2015. The vulnerability of US apple (Malus) genetic resources. Genetic Resources and Crop Evolution. 62(5):765-794. DOI: 10.1007/s10722-014-0194-2.
Development of a strategy to conserve worldwide apple genetic resources - (Abstract Only)
Volk, G.M., Hummer, K.E., Bramel, P. 2015. Development of a strategy to conserve worldwide apple genetic resources [abstract]. XIV Eucarpia Fruit Breeding and Genetics Symposium. Available: http://www.eucarpiafruit2015.org/wp-content/uploads/2014/07/eucarpia2k15programme.pdf.
Why is intracellular ice lethal? A microscopical study showing evidence of programmed cell death in cryo-exposed embryonic axes of recalcitrant seeds of Acer saccharinum - (Peer Reviewed Journal)
Wesley-Smith, J., Walters, C.T., Pammenter, N., Berjak, P. 2015. Why is intracellular ice lethal? A microscopical study showing evidence of programmed cell death in cryo-exposed embryonic axes of recalcitrant seeds of Acer saccharinum. Annals of Botany. 115(6):991-1000. DOI:10.1093/aob/mcv009.
Genetic diversity in Malus × domestica (Rosaceae) through time in response to domestication - (Peer Reviewed Journal)
Gross, B., Henk, A.D., Richards, C.M., Fazio, G., Volk, G.M. 2014. Genetic diversity in Malus × domestica (Rosaceae) through time in response to domestication. American Journal of Botany. 101(10):1770-1779. DOI: 10.3732/ajb.1400297.
Cryopreservation of Populus trichocarpa and Salix using dormant buds with recovery by grafting or direct rooting - (Peer Reviewed Journal)
Bonnart, R.M., Waddell, J.W., Haiby, K., Widrlechner, M., Volk, G.M. 2014. Cryopreservation of Populus trichocarpa and Salix using dormant buds with recovery by grafting or direct rooting. CryoLetters. 35(6):507-515.
Factors affecting stress tolerance in recalcitrant embryonic axes from four Quercus (Fagaceae) species native to the US or China - (Peer Reviewed Journal)
Xia, K., Hill, L.M., Li, D., Walters, C.T. 2014. Factors affecting stress tolerance in recalcitrant embryonic axes from four Quercus (Fagaceae) species native to the US or China. Annals Of Botany. 114(8):1747-1759. DOI: 10.1093/aob/mcu193.
Genetic relationships between wild progenitor pear (Pyrus L.) species and local cultivars native to Georgia, South Caucasus - (Peer Reviewed Journal)
Asanidze, Z., Akhalkatsi, M., Henk, A.D., Richards, C.M., Volk, G.M. 2014. Genetic relationships between wild progenitor pear (Pyrus L.) species and local cultivars native to Georgia, South Caucasus. Flora. 209(9):504-512. DOI: 10.1016/j.flora.2014.06.013.
A global conservation strategy for apple - (Abstract Only)
Volk, G.M., Chao, C.T., Hummer, K.E. 2014. A global conservation strategy for apple [abstract]. 7th International Rosaceae Genomics Conference. p. 28.
Application of genetic and spatial analyses to identify collection priorities for wild Malus species - (Abstract Only)
Volk, G.M., Richards, C.M., Henk, A.D., Baldo, A.M., Fazio, G., Chao, C.T. 2014. Application of genetic and spatial analyses to identify collection priorities for wild Malus species [abstract]. 7th International Rosaceae Genomics Conference. p. 84.
An efficient, widely applicable cryopreservation of Lilium shoot tips by droplet vitrification - (Peer Reviewed Journal)
Yin, Z., Bi, W., Chen, L., Zhao, B., Volk, G.M., Wang, Q. 2014. An efficient, widely applicable cryopreservation of Lilium shoot tips by droplet vitrification. Acta Physiologiae Plantarum. 36(7):1683-1692. DOI: 10.1007/s11738-014-1543-7.
Potential applications of cryogenic technologies to plant genetic improvement and pathogen eradication - (Peer Reviewed Journal)
Wang, B., Wang, R., Cui, Z., Li, J., Bi, W., Li, B., Ozudogru, E., Volk, G.M., Wang, Q. 2014. Potential applications of cryogenic technologies to plant genetic improvement and pathogen eradication. Biotechnology Advances. 32(3):583-595. DOI: 10.1016/j.biotechadv.2014.03.003.
Genebanking seeds from natural populations - (Peer Reviewed Journal)
Walters, C.T. 2015. Genebanking seeds from natural populations. Natural Areas Journal. 35(1):98-105. DOI: 10.3375/043.035.0114.
Plant shoot tip response to treatment with plant vitrification solution 2 - (Peer Reviewed Journal)
Volk, G.M., Henk, A.D., Bonnart, R.M., Shepherd, A., Gross, B.L. 2014. Plant shoot tip response to treatment with plant vitrification solution 2. Acta Horticulturae. 1039:81-84.
Extreme biology: probing life at low water contents and temperatures - (Peer Reviewed Journal)
Walters, C.T. 2014. Extreme biology: probing life at low water contents and temperatures. Acta Horticulturae. 1039:49-56.
Somatic embryogenesis and organogenesis from cryopreserved shoot tips of Lilium Oriental hybrid ‘Siberia’ - (Peer Reviewed Journal)
Yin, Z., Chen, L., Bi, W., Volk, G.M., Wang, Q. 2014. Somatic embryogenesis and organogenesis from cryopreserved shoot tips of Lilium Oriental hybrid ‘Siberia’. Acta Horticulturae. 1039:193-200.
Strategies for improved efficiency when implementing plant vitrification techniques - (Peer Reviewed Journal)
Volk, G.M., Shepherd, A., Bonnart, R.M. 2014. Strategies for improved efficiency when implementing plant vitrification techniques. Acta Horticulturae. 1039:85-89.
Seed biology of tree species and strategies for ex situ conservation - (Proceedings)
Walters, C.T. 2013. Seed biology of tree species and strategies for ex situ conservation. In: Proceedings of the International Symposium on Breeding and Utilization of Forest Special Purpose Trees, September 9-12, 2013, Suwon, Korea. p.23-35.
Extreme biology: probing life at low water contents and temperatures - (Abstract Only)
Walters, C.T. 2013. Extreme biology: probing life at low water contents and temperatures. International Society for Horticultural Science Meeting. p.19.
Cryopreservation of pecan pollen for long-term storage - (Abstract Only)
Volk, G.M., Walters, C.T., Waddell, J., Grauke, L.J. 2013. Cryopreservation of pecan pollen for long-term storage. Meeting Abstract. Second International Symposium on Plant Cryopreservation, p.106.
Cryopreservation of citrus in the USDA-ARS national plant germplasm system collection - (Abstract Only)
Bonnart, R.M., Shepherd, A., Lee, R.F., Krueger, R., Volk, G.M. 2013. Cryopreservation of citrus in the USDA-ARS national plant germplasm system collection. Meeting Abstract. 2nd International Symposium on Plant Cryopreservation. p.62.
Cryopreservation of vitis shoot tips from diverse species - (Abstract Only)
Shepherd, A., Bonnart, R.M., Volk, G.M. 2013. Cryopreservation of vitis shoot tips from diverse species. Meeting Abstract. Second International Symposium on Plant Cryopreservation, p.103.
Last Modified: 8/31/2015
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