Results 121 to 130 of about 3,203 (150)

Arguments for Redwood Clonal Forestry

1993
Some concerned citizens are cautious about clonal forestry because they worry about “fooling Mother Nature”. But Mother Nature normally clones coast redwood (Sequoia sempervirens). Stump sprouts, or sometimes stem sprouts or root sprouts or adventitious shoots, produce multiple copies of successful clones in local clumps for two, three, or even more ...
J. A. Rydelius, W. J. Libby
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Genetics, Biotechnology and Clonal Forestry

1993
Early foresters were among the first to understand and apply principles of evolution to practical forestry (Matthew 1831, 1860). Matthew’s first citation appeared 11 months before Darwin sailed on the Beagle, and earlier published observations on the effect of seed origin on the performance of planted trees go back to 1760 (reviewed in Larsen 1956).
M. R. Ahuja, W. J. Libby
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Clonal Forestry with Tropical Hardwoods

1993
The tropical forests are resources of enormous potential value as fuel wood, timber, and pulpwood. Although half of the forests of the world are in the tropics, the rate of depletion of these forests is a cause for concern.
A. F. Mascarenhas, E. M. Muralidharan
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Organization and Implementation of a Clonal Forestry Program

1993
A successful large-scale operational clonal forestry program has evolved in eastern Ontario, Canada since 1975. The beginning of this program can be attributed to three main factors: (1) the demonstrated growth of improved hybrid poplar clones in field tests, (2) the developing wood supply shortage of a local pulp and paper mill, and (3) the ...
S. Strobl, R. W. Evers
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Genetic variances among clonally propagated populations of tamarack and the implications for clonal forestry

Canadian Journal of Forest Research, 1987
Genetic variances of three tamarack (Larixlaricina (Du Roi) K. Koch.) populations in central New Brunswick were examined using vegetatively propagated materials. The component of variance due to clones within families was large for both 5-year height and survival and was partitioned into additive and nonadditive genetic variances.
Y. S. Park, D. P. Fowler
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Past, Present, and Anticipated Applications of Clonal Forestry

1993
Trees are among the few natural resources that can be renewed, and the need for trees and the wood that they provide is continuing to increase with increases in world population and the striving of peoples to maintain or increase their standards of living.
J. Kleinschmit, D. K. Khurana, H. D. Gerhold, W. J. Libby   +3 more
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Limit theorems and a general framework for risk analysis in clonal forestry

Mathematical Biosciences, 1997
Use of clonally propagated plantings in reforestation offers management advantages of phenotypic uniformity and high yields. Disadvantages include low genetic diversity and the possibility that the clone or clones chosen are particularly susceptible to attack by an insect or pathogen unforeseen as a problem at the time of clonal selection.
Bishir, John, Roberds, James
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Clonal Forestry with Yellow-Cedar

1993
Stecklings have been the major propagule type for the reforestation of yellow-cedar [Chamaecyparis nootkatensis (D. Don) Spach] over the past 15 years in British Columbia. Over 70% of the planting stock since 1975 has been Stecklings, and currently, one-half to three-quarters of a million Stecklings are planted annually.
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Comparison of Experimental Designs for Clonal Forestry Using Simulated Data

Forest Science, 2006
Abstract Various alternatives for the design of clonal field trials in forestry were studied using simulated data to identify “optimal𠇍 or “near-optimal𠇍 scenarios for the estimation of genetic parameters. The simulated field site consisted of a rectangular grid on which 256 clones with 8 ramets each were installed.
Salvador A. Gezan, Timothy L. White, Dudley A. Huber   +2 more
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Strategies for Clonal Forestry with Poplars, Aspens, and Willows

1993
Poplars (species and interspecific hybrids of sections Aigeiros and Tacamahaca), aspens (Leuce poplars) and willows (Salix) exhibit a variety of useful morphological, anatomical, and physiological characteristics. Due to their fast growth and the fact that they may be planted on many and varied sites both in and out of forests, poplars, aspens, and ...
L. Zsuffa, L. Sennerby-Forsse, H. Weisgerber, R. B. Hall   +3 more
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