Results 241 to 250 of about 389,564 (265)

Unequal clonal deployment improves genetic gains at constant diversity levels for clonal forestry

Tree Genetics & Genomes, 2011
Maximizing genetic gain at an acceptable diversity level is an ideal outcome of selection and deployment. Based on this criterion, this study investigated the efficiency of unequal clonal deployment strategies for clonal forestry and compared them with truncation selection and equal deployment (truncation deployment).
Yuhui Weng, Yill Sung Park, Dag Lindgren
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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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Estimating genetic gains from alternative breeding strategies for clonal forestry

Canadian Journal of Forest Research, 1992
Concepts and procedures are presented for the analysis of progeny trials that incorporate clonal replication as a means to resolve variance arising from nonadditive gene effects. Components of variance from the linear model may be expressed in terms of expected covariances among relatives, and these, in turn, may be used to derive approximations of ...
T.J. Mullin, Y.S. Park
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Clonal Forestry with Sugi (Cryptomeria japonica)

1993
Since ancient times, sugi (Cryptomeria japonica D. Don) has been one of the most important conifer species in Japan. In the People’s Republic of China, descriptions of Cryptomeria foriunei Hooibrenk ex Otto et Dietr, are also found, however, it is not so popular in Chinese forestry (cf. Hashimoto 1983). In Taiwan, in 1896, the seeds of C. japonica were
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Strategies for Clonal Forestry with Norway Spruce

1993
Norway spruce [Picea abies (L.) Karst.] is the most extensively used forest-tree species in Europe. Recently, increased interest in its use in northeastern USA and eastern Canada has been expressed; in some areas of this region, its growth and other qualities exceed the indigenous species (Fowler 1979).
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Conifer Somatic Embryogenesis and Clonal Forestry

1993
Somatic embryogenesis, the formation and development of embryos from somatic (vegetative) tissues under in vitro conditions, was first demonstrated with carrot (Steward et al. 1958). The list of plants that can be regenerated by somatic embryogenesis continues to grow (Tisserat et al. 1979; Ammirato 1983; see references in this chapter).
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Broad implications of southern United States pine clonal forestry on planning and management of forests

International Forestry Review, 2009
SUMMARY Forest management activities are designed not only to meet the growing economic and commodity production needs of the human population, but also to maintain, conserve, and protect ecological and social values. This paper presents a set of broad implications of advances in tree cloning technology on forest management and planning, and how these ...
P Bettinger, M Clutter, J Siry, M Kane, J Pait   +4 more
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Policies, Regulations, and Laws Affecting Clonal Forestry

1993
The task on regulation of forest reproductive material was initiated around 1925 in Germany and other Central European Countries. By that time the international seed trade was expanding and it was realized that there should be regulation to protect forest regeneration from unsuitable seed sources.
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Cryopreservation of Embryogenic Cultures of Conifers and Its Application to Clonal Forestry

1999
Cryopreservation, by providing physico-chemical stability of germplasm, offers the potential for economically and reliably providing long-term storage of genetic resources (Blakesley et al. 1996). It has become a cornerstone of conifer somatic embryogenesis (Adams et al. 1994; Gupta et al. 1994, Smith et al. 1994, Handley et al.
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Advantage of Clonal Deployment in Norway Spruce (Picea abies (L.) H. Karst)

Annals of Forest Science, 2020
Mateusz Liziniewicz, Andreas Helmersson, Zhi-Qiang Chen   +2 more
exaly