Search Results - "Dvorak, W. S"

Genetic diversity and gene exchange in Pinus oocarpa, a Mesoamerican pine with resistance to the pitch canker fungus (Fusarium circinatum) by Dvorak, W.S, Potter, K.M, Hipkins, V.D, Hodge, G.R

“…Eleven highly polymorphic microsatellite markers were used to determine the genetic structure and levels of diversity in 51 natural populations of Pinus…”
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Visualising the environmental preferences of Pinus tecunumanii populations by Brawner, J. T, Hodge, G. R, Meder, R, Dvorak, W. S

“…A network of 92 pedigreed ex situ conservation plantings of Pinus tecunumanii, established as replicated progeny within provenance trials, is used to present a…”
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Variation in pitch canker resistance among provenances of Pinus patula and Pinus tecunumanii from Mexico and Central America by Hodge, G. R, Dvorak, W. S

“…Pinus patula and high-elevation (HE) sources of P. tecunumanii exhibit intermediate levels of resistance to pitch canker (Fusarium circinatum), compared to…”
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Assessing the potential of Pinus herrerae as a plantation species for the subtropics by Dvorak, W.S., Kietzka, Eric, Hodge, G.R., Nel, A., dos Santos, G.A., Gantz, C.

“…Pinus herrerae Martínez is a little known hard pine that occurs in the western mountain ranges of Mexico between 16° and 28°N latitude and 1800 m and 2400 m…”
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Provenance variation and within-provenance genetic parameters in Eucalyptus urophylla across 125 test sites in Brazil, Colombia, Mexico, South Africa and Venezuela by Hodge, G. R., Dvorak, W. S.

“…Provenance and within-provenance genetic variation for stem volume growth in Eucalyptus urophylla was examined in a large trial series of 125…”
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World view of Gmelina arborea: opportunities and challenges by Dvorak, W.S

“…Gmelina arborea Roxb. (gmelina) occurs naturally in 11 countries in tropical and subtropical regions of Asia. Approximately 700,000ha of gmelina have now been…”
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Growth, provenance effects and genetic variation of Bombacopsis quinata in field tests in Venezuela and Colombia by Hodge, G.R., Dvorak, W.S., Urueña, H., Rosales, L.

“…Ten provenance/progeny tests of Bombacopsis quinata were established in Venezuela and Colombia using open-pollinated (OP) seed collected from throughout its…”
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Allozyme variation and recent evolutionary history of eastern hemlock (Tsuga canadensis) in the southeastern United States by Potter, K. M, Dvorak, W. S, Crane, B. S, Hipkins, V. D, Jetton, R. M, Whittier, W. A, Rhea, R

“…Eastern hemlock (Tsuga canadensis [L.] Carr.) is a widespread and ecologically important conifer species of eastern North America that is threatened by the…”
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origin of Caribbean pine in the seasonal swamps of the Yucatan by Dvorak, W.S, Hamrick, J.L, Gutierrez, E.A

“…An isolated 180‐ha stand ofPinus caribaeavar.hondurensis(Caribbean pine) exists at El Pinal, Guatemala, in seasonal marshlands 18 km northeast of the old Mayan…”
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Growth and modulus of elasticity of pine species and hybrids three years after planting in South Africa by Nilsson, O, Hodge, G R, Frampton, L J, Dvorak, W S, Bergh, J

“…Growth data and modulus of elasticity (MOE) of 11 different pine species and hybrids were examined at six sites in three regions in South Africa. Growth traits…”
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Water use in Plantations of Eucalypts and Pines: A Discussion Paper from a Tree Breeding Perspective by Dvorak, W.S.

“…Plantation forests are being established on more marginal, harsh sites to accommodate expansion of agriculture. Because of this, tree breeders and…”
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Differential responses of Central American and Mexican pine species and Pinus radiata to infection by the pitch canker fungus by HODGE, G. R, DVORAK, W. S

“…Seedlings from a wide array of 23 species, varieties,and geographic races were screened for resistance topitch canker using artificial inoculation in…”
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Patterns of genetic variation in Pinus chiapensis, a threatened Mexican pine, detected by RAPD and mitochondrial DNA RFLP markers by Newton, A C, Allnutt, T R, Dvorak, W S, Del Castillo, R F, Ennos, R A

“…Pinus chiapensis (Pinaceae) is a large conifer, endemic to central and southern Mexico and north-western Guatemala. In order to assess the extent of genetic…”
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Evidence of low-levels of natural introgression between Pinus jaliscana and Pinus oocarpa in an open-pollinated progeny trial using near-infrared spectroscopy by Dvorak, W.S., Nel, A., Espinoza, J.A.

“…► Introgression between P. oocarpa and P. jaliscana occurs in natural stands. ► Putative hybrids in an open-progeny test were confirmed by botanical analysis…”
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The conservation and breeding of Eucalyptus urophylla: a case study to better protect important populations and improve productivity by Dvorak, WS, Hodge, GR, Payn, KG

“…Eucalyptus urophylla is one of the most commercially important forest species in the world, primarily as a hybrid parent. However, the conservation status of…”
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Flow Cytometric Analysis of DNA Content for Tropical and Temperate New World Pines by Hall, S.E., Dvorak, W.S., Johnston, J.S., Price, H.J., Williams, C.G.

“…Temperate pine species have unusually large, complex genomes which make genomic analysis problematic; it has been suggested that tropical pines might have…”
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strategic importance of applied tree conservation programs to the forest industry in South Africa by Dvorak, WS

“…Because of anticipated adverse climatic change and resulting increases in disease and insect attacks in forest plantations in the future, forest industries…”
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In vitro regeneration of plantlets from mature embryos of Pinus ayacahuite by Saborio, F, Dvorak, W.S, Donahue, J.K, Thorpe, T.A

“…A plantlet regeneration protocol was developed for Pinus ayacahuite var. ayacahuite (Ehrenb.). Embryos from mature seeds from ten provenances were cultured in…”
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Provenance and family variation of Pinus oocarpa grown in the Brazilian cerrado by Moura, V.P.G, Dvorak, W.S, Hodge, G.R

“…A Pinus oocarpa trial with six provenances and 46 open-pollinated families was planted on a deep Oxisol in 1983, at the EMBRAPA research station near…”
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Susceptibility of provenances and families of Pinus maximinoi and Pinus tecunumanii to frost in South Africa by Mitchell, R. G., Wingfield, M. J., Hodge, G. R., Dvorak, W. S., Coutinho, T. A.

“…The future of South Africa’s most important pine species, Pinus patula , is threatened by the pitch canker fungus, Fusarium circinatum . Pinus maximinoi and P…”
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