Author: Bruce Zobel Publisher: ISBN: 9781930665811 Category : Technology & Engineering Languages : en Pages : 0
Book Description
Originally published in 1984 and written by renowned authorities in the field, this detailed guide shows how to effectively organize, implement, and manage large scale tree-improvement programs. It describes the genetic and silvicultural principles and practical procedures that apply to beginning, established and advanced-generation tree improvement programs. Dr. Zobel is a renowned forester. He has received many awards and honors for his leadership role in advancing forest tree improvement. He arrived at North Carolina State University to lead the new Cooperative Tree Improvement Program in 1956 and retired from the program in 1979. More than two decades later, he keeps regular office hours on campus. Students from across the globe have traveled to study in the forestry department under Dr. Zobel. Dr. Zobel is a North Carolina State University distinguished Professor of Forestry and has published hundreds of articles pertaining to tree improvement and tropical forestry. After retiring as director of the cooperative, Dr. Zobel founded Zobel Forestry Associates, an international forestry consulting firm.
Author: ER Williams Publisher: CSIRO PUBLISHING ISBN: 0643090134 Category : Technology & Engineering Languages : en Pages : 221
Book Description
Experimental Design and Analysis for Tree Improvement provides a set of practical procedures to follow when planning, designing and analysing tree improvement trials. Using many fully-worked examples, it outlines how to: design field, glasshouse and laboratory trials; efficiently collect data and construct electronic data files; pre-process data, screening for data quality and outliers; analyse data from single and across-site trials using either GenStat or SAS; and interpret the results from statistical analyses. The authors address the many practical issues often faced in forest tree improvement trials and describe techniques that will give conclusive results with the minimum expense. The techniques provided are applicable to the improvement of not only trees, but to crops in general. Building on the success of the first edition, the second edition covers commercially-available software packages for design generation (CycDesigN) and data pre-processing and automated generation of programs for statistical analysis (DataPlus). For analysis, it provides both GenStat and SAS programs as generated by DataPlus.
Author: G. Namkoong Publisher: Springer Science & Business Media ISBN: 1461238927 Category : Technology & Engineering Languages : en Pages : 186
Book Description
It has become apparent, during discussions with students and colleagues in forest genetics, that a universal concern is the achievement of diverse goals of forestry from fiber production in industrial as well as farm forests to conserving forest ecosystems. Although we generally have several breeding methods available and several species to breed, we seek to satisfy multiple-use goals on diverse sites by management techniques that at best can only partially control edaphic environmental variation. The dominant approach, which was agriculturally motivated, has involved inten sive effort with complicated breeding plans on single species for uniform adaptability and single-product plantations. However, this is obviously neither the only, nor necessarily the best, solution for the genetic management of tree species, and thus our intent in this volume is to develop ways to achieve multiple objectives in tree breeding. We include an array of breeding plans from simple iterated designs to sets of multiple populations capable of using gene actions for different traits in different environments for uncertain futures. The presentation is organized around the development of breeding from single-to multiple-option plans, from single to multiple traits, from single to mUltiple environ ments, and from single to multiple populations. However, it is not a complete "How To" book, and includes neither exercises nor instructions on data handling. It also does not include discussion of all modes of reproduction and inheritance encountered in plants.
Author: University of North Carolina (1793-1962). State College of Agriculture and Engineering, Raleigh. Forest Tree Improvement Program Publisher: ISBN: Category : Trees Languages : en Pages : 592
Author: F. Thomas Ledig Publisher: ISBN: Category : Douglas fir Languages : en Pages : 16
Book Description
Three tree improvement programs were analyzed by break-even, cost-benefit technique: one for ponderosa pine in the Pacific Northwest, and two for Douglas-fir in the Pacific Northwest-one of low intensity and the other of high intensity. A return of 8 percent on investment appears feasible by using short rotations or by accompanying tree improvement with thinning. Interest rates, length of rotation, the inclusion of thinnings, and site index had greater effects on profitability than program design. Large breeding zones improved profitability, although they incur the biological risks of nonadaptation to local conditions and loss of local genetic resources. Increasing orchard seed yield affected the results only slightly unless the planting program could be expanded, which is equivalent to increasing the size of the breeding zone. If the increase in seed yield merely reduced the required acreage of seed orchard and associated costs, the financial results improved only slightly.
Author: Bruce Zobel
Author: Leroy C. Johnson
Author: 
Author: ER Williams
Author: G. Namkoong
Author: University of North Carolina (1793-1962). State College of Agriculture and Engineering, Raleigh. Forest Tree Improvement Program
Author: Minnesota. Division of Forestry
Author: F. Thomas Ledig
Author: 
Author: