Agriculture

New PDF release: Clonal Forestry II: Conservation and Application

By W. J. Libby, M. R. Ahuja (auth.), Dr. Mulkh-Raj Ahuja, Dr. William J. Libby (eds.)

ISBN-10: 3642848133

ISBN-13: 9783642848131

ISBN-10: 364284815X

ISBN-13: 9783642848155

Provided listed here are either underlying concept and up to date effects about the propagation and use of clones in learn and in construction forestry. state of the art technological know-how and case histories treating construction, trying out, multiplication and deployment of clones are provided. Agroforestry, city forestry and christmas-tree farming are lined, besides extra conventional multiple-use forestry and high-intensity forestry for biomass, wooden and fiber creation. Clonal forestry is contrasted to the more moderen advancements of "family forestry", and the classical tree-improvement procedure hoping on seed-orchards. The background of clonal forestry is roofed with reports of numerous centuries adventure with Sugi in Japan and poplars in Europe. The affects and use of clones within the contexts of genetic conservation and biodiversity are mentioned, as are the legislation and rules affecting clonal construction and deployment.

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Additional resources for Clonal Forestry II: Conservation and Application

Sample text

Experience with other plants and animals being brought under domestication indicates that managers will opt for the greater Uniformity, greater reliability, and higher productivity available with well-tested varieties and clones. While there are important differences between agriculture and forestry, the similarities are sufficient so that such a trajectory, once begun, seems likely to continue; and, as with well-known agronomic varieties, it seems likely that the change to known and reliable clones of forest trees will occur first where the economic values are the highest, and the sites the most productive.

Here the prospects for progress are promising (Bonga and von Aderkas, Chap. 12, Vol. 1). For example, sites near meiosis in flowers appear to be favorable sources of explants (Mullins and Srinivasan 1976; Eichholtz 1979; Jorgensen 1989) that may produce rejuvenated (or at least juvenile) tissue that can then be propagated as a juvenile form of the clone (Meier-Dinkel and Kleinschmit 1989). The storage of such somatic embryos is a technique for juvenility maintenance now under active investigation at Petawawa (Ontario, Canada) and elsewhere.

Kleinschmit et al. 26 The characteristics for which species and cultivars are selected for planting are highly site-specific. They are determined by the landscape effect that is to be created in a particular place, the stresses that trees will encounter there, space limitations, and the maintenance needs that may be anticipated. The reliable and predictable performance of clones therefore makes them especially desirable for many situations in towns and cities. A survey of 93 municipal arborists in the northeastern USA (Gerhold and Steiner 1976) found that they use many traits in selecting species and cultivars, involving their appearance, suitability for site conditions, and maintenance considerations (Table 2).

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Clonal Forestry II: Conservation and Application by W. J. Libby, M. R. Ahuja (auth.), Dr. Mulkh-Raj Ahuja, Dr. William J. Libby (eds.)


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