Results 111 to 120 of about 420 (144)
Re-evaluation of Ceratostomella and Xylomelasma with introduction of two new species (Sordariomycetes). [PDF]
MycoKeysRéblová M +5 more
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The tolerance of Pinus patula × Pinus tecunumanii, and other pine hybrids, to Fusarium circinatum in greenhouse trials [PDF]
New Forests, 2012 The field survival of Pinus patula seedlings in South Africa is frequently below acceptable standards. From numerous studies it has been determined that this is largely due to the pitch canker fungus, Fusarium circinatum. Other commercial pines, such as P. elliottii and P.
Mitchell, R.G. (Richard Glen) +4 more
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New Forests, 2006
Pinus patula and high-elevation (HE) sources of P. tecunumanii exhibit intermediate levels of resistance to pitch canker (Fusarium circinatum), compared to extremely resistant species such as P. oocarpa, and extremely susceptible species such as P. radiata. Seedlings from 20 P. patula provenances and 15 HE P.
Gary R Hodge, W S Dvorak
exaly +2 more sources
Pinus patula and high-elevation (HE) sources of P. tecunumanii exhibit intermediate levels of resistance to pitch canker (Fusarium circinatum), compared to extremely resistant species such as P. oocarpa, and extremely susceptible species such as P. radiata. Seedlings from 20 P. patula provenances and 15 HE P.
Gary R Hodge, W S Dvorak
exaly +2 more sources
New Forests, 2014
During the last 20 years a program to develop and commercialize the Pinus patula × Pinus tecunumanii hybrid, as a replacement for P. patula, has been successfully implemented. The first crosses were initiated during the early 1990s and lead to establishment of field trials across a wide variety of sites.
A Nel, Craig M Ford
exaly +2 more sources
During the last 20 years a program to develop and commercialize the Pinus patula × Pinus tecunumanii hybrid, as a replacement for P. patula, has been successfully implemented. The first crosses were initiated during the early 1990s and lead to establishment of field trials across a wide variety of sites.
A Nel, Craig M Ford
exaly +2 more sources
, 1997 Genetic parameters were estimated from 5-year data collected in two 11 x 6 factorial matings, one between Pinus caribaea var. hondurensis Barr. & Golf. (PCH) and Pinus oocarpa Schiede (Pooc) and the other between PCH and Pinus tecunumanii (Schw.) Eguiluz et Ferry (PTEC), that were planted on two sites in Queensland, Australia.
Dieters, M.J. +3 more
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Growth and dynamic modulus of elasticity of Pinus patula × Pinus tecunumanii hybrids in Mpumalanga, South Africa [PDF]
Southern Forests, 2017 Field establishment of South Africa’s most important commercial pine species, Pinus patula, is severely hampered by the pitch canker fungus, Fusarium circinatum. Importantly, hybrids between P. patula and other pine species tolerant to the pitch canker
Paxie W Chirwa
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Visualising the environmental preferences of Pinus tecunumanii populations
Tree Genetics & Genomes, 2014A network of 92 pedigreed ex situ conservation plantings of Pinus tecunumanii, established as replicated progeny within provenance trials, is used to present a principal components-based analysis that illustrates the climatic preferences of 23 populations from the species’ native range. This meta-analysis quantifies changes in the relative productivity,
Brawner, J. T. +3 more
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Genetic and site effects on stem breakage in Pinus tecunumanii
New Forests, 1993Fifteen provenance/progeny tests of Pinus tecunumanii (Schw.) Eguiluz et Perry were assessed for upper-crown stem breakage at 5 to 8 years of age in Brazil, Colombia and South Africa. Five year results indicated that the mean percent stem breakage was moderate in Colombia (14% to 21%), low in South Africa (2% to 6%) and very low in Brazil (
W. S. Dvorak, C. C. Lambeth, Bailian Li
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Forest Ecology and Management, 2009
Climate change is likely to have a negative impact on natural populations of Pinus patula and Pinus tecunumanii, two globally important tree species in plantation forestry. The objective of this work was to evaluate the impact of climate change on the persistence of the natural populations of these species at their actual locations in order to take ...
Maarten van Zonneveld +4 more
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Climate change is likely to have a negative impact on natural populations of Pinus patula and Pinus tecunumanii, two globally important tree species in plantation forestry. The objective of this work was to evaluate the impact of climate change on the persistence of the natural populations of these species at their actual locations in order to take ...
Maarten van Zonneveld +4 more
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Three-year growth and stability of Honduran provenances and families of Pinus tecunumanii
Forest Ecology and Management, 1994Abstract Two orthogonal sets of five trials of P. tecunumanii were established by the CAMCORE Cooperative at several locations in Brazil, Guatemala, South Africa and Venezuela. Sets A and B included 46 and 35 half-sib families, respectively, from the provenances of Jocon, San Francisco, San Esteban and Villa Santa, Honduras.
W.S. Dvorak, K.D. Ross
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