scholarly journals Genetic variation of wood density components in a radiata pine progeny test located in the south of Chile

2005 ◽  
Vol 62 (2) ◽  
pp. 105-114 ◽  
Author(s):  
Francisco Zamudio ◽  
Philippe Rozenberg ◽  
Ricardo Baettig ◽  
Adriana Vergara ◽  
Marco Yañez ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Wood Density ◽  
Radiata Pine ◽  
Progeny Test ◽  
The South

scholarly journals Genetic trends in wood density and radial growth with cambial age in a radiata pine progeny test

2002 ◽  
Vol 59 (5-6) ◽  
pp. 541-549 ◽  
Author(s):  
Francisco Zamudio ◽  
Ricardo Baettyg ◽  
Adriana Vergara ◽  
Fernando Guerra ◽  
Philippe Rozenberg
Keyword(s):  
Wood Density ◽  
Radial Growth ◽  
Radiata Pine ◽  
Progeny Test ◽  
Cambial Age ◽  
Genetic Trends

Inherited and Environmentally Induced Differences in Mutation Frequencies Between Wild Strains of Sordaria fimicola From “Evolution Canyon”

Genetics ◽  
1998 ◽  
Vol 149 (1) ◽  
pp. 87-99
Author(s):  
Bernard C Lamb ◽  
Muhammad Saleem ◽  
William Scott ◽  
Nina Thapa ◽  
Eviatar Nevo
Keyword(s):  
Genetic Variation ◽  
Spontaneous Mutation ◽  
The South ◽  
Natural Genetic Variation ◽  
The North ◽  
Ascospore Germination ◽  
Evolution Canyon ◽  
Two Generations ◽  
Wild Strains ◽  
Sordaria Fimicola

Abstract We have studied whether there is natural genetic variation for mutation frequencies, and whether any such variation is environment-related. Mutation frequencies differed significantly between wild strains of the fungus Sordaria fimicola isolated from a harsher or a milder microscale environment in “Evolution Canyon,” Israel. Strains from the harsher, drier, south-facing slope had higher frequencies of new spontaneous mutations and of accumulated mutations than strains from the milder, lusher, north-facing slope. Collective total mutation frequencies over many loci for ascospore pigmentation were 2.3, 3.5 and 4.4% for three strains from the south-facing slope, and 0.9, 1.1, 1.2, 1.3 and 1.3% for five strains from the north-facing slope. Some of this between-slope difference was inherited through two generations of selfing, with average spontaneous mutation frequencies of 1.9% for south-facing slope strains and 0.8% for north-facing slope strains. The remainder was caused by different frequencies of mutations arising in the original environments. There was also significant heritable genetic variation in mutation frequencies within slopes. Similar between-slope differences were found for ascospore germination-resistance to acriflavine, with much higher frequencies in strains from the south-facing slope. Such inherited variation provides a basis for natural selection for optimum mutation rates in each environment.

scholarly journals Modelling variation in wood density within and among trees in stands of New Zealand-grown radiata pine

2015 ◽  
Vol 45 (1) ◽  
Author(s):  
Mark O. Kimberley ◽  
Dave J. Cown ◽  
Russell B. McKinley ◽  
John R. Moore ◽  
Leslie J. Dowling
Keyword(s):  
New Zealand ◽  
Wood Density ◽  
Radiata Pine

Wood density of radiata pine: effect of nitrogen supply

2001 ◽  
Vol 145 (3) ◽  
pp. 173-180 ◽  
Author(s):  
P.N. Beets ◽  
K. Gilchrist ◽  
M.P. Jeffreys
Keyword(s):  
Wood Density ◽  
Radiata Pine ◽  
Nitrogen Supply

scholarly journals Unexpected low genetic variation in the South American hystricognath rodent Lagostomus maximus (Rodentia: Chinchillidae)

PLoS ONE ◽  
2019 ◽  
Vol 14 (9) ◽  
pp. e0221559 ◽  
Author(s):  
María Constanza Gariboldi ◽  
Pablo Ignacio Felipe Inserra ◽  
Sergio Lucero ◽  
Mauricio Failla ◽  
Sergio Iván Perez ◽  
...  
Keyword(s):  
Genetic Variation ◽  
South American ◽  
The South ◽  
Lagostomus Maximus

Implications of selection history on genetic architecture of growth, form, and wood-quality traits in Pinus radiata

2008 ◽  
Vol 38 (9) ◽  
pp. 2372-2381 ◽  
Author(s):  
S. Kumar ◽  
R. D. Burdon ◽  
G. T. Stovold ◽  
L. D. Gea
Keyword(s):  
Wood Density ◽  
Pinus Radiata ◽  
Wood Quality ◽  
Genetic Correlations ◽  
Wood Properties ◽  
Radiata Pine ◽  
Single Pair ◽  
Narrow Sense Heritability ◽  
Tree Form ◽  
Selection History

Clonal trials of Pinus radiata D. Don (radiata pine), representing two populations (or breeds), one selected for growth and form (GF) and the other selected for high wood density as well as growth and form (HD), were replicated on two low-altitude New Zealand sites: Tarawera (pumice soil, 38°08′S) and Woodhill (coastal dune, 36°42′S). The GF material comprised 33 pair-crosses (19 parents) × 10 clones, and the HD material comprised 19 single-pair crosses (35 parents) × 10 clones, with six ramets per clone per site. Diameter (DBH), two tree-form variables, and needle retention (NRA) were assessed 8 years after planting, and wood density (DEN), acoustic velocity, and collapse were assessed 9 years after planting. The site differences were generally expressed more strongly in the GF population. Estimated genetic parameters were mostly similar for the two breeds, except that genotypic correlation between DBH and DEN was apparently zero in the HD population. Estimated broad-sense heritabilities (H2) were generally markedly higher than narrow-sense heritability estimates (h2), except with DEN. Estimated between-site type-B clonal genotypic correlations were generally high (>0.8) for wood properties. Overall, DBH showed adverse genetic correlations with wood properties. The Elite/Breed strategy appeared to be helpful in combating adverse genetic correlations.

Sign in / Sign up

Export Citation Format

Share Document