Hereditary Variation as the Basis for Selecting Superior Forest Trees (Classic Reprint) - Softcover

Dorman, Keith William

Softcover

ISBN 10: 0364547405 ISBN 13: 9780364547403

Verlag: Forgotten Books, 2018

Inhaltsangabe

Excerpt from Hereditary Variation as the Basis for Selecting Superior Forest Trees

The first step in studying variation in forest trees should be to re view what is known about the influence of each of the three factors listed above. This should tell us how to look for variation, how to recognize it, and how to evaluate it by test plantings. Because this background is nec essary, the following sections give in some detail the results of many studies in this and foreign countries. They also cover many species because what is common in one may be common in others. This summary gives us a basis upon which to build plans for studies of natural variation in local species, and the remainder of the discussion is concerned with this phase of the job. It gives the characters that are important in vigor, quality, and resistance to pests, and discusses what variation has been observed in studies up to this time. Also, there is a discussion of the qualities important in utilization for various products. 'we must be alert and recognize valuable material, because we don't know what will be found. If the limits of variation were known and we could set'up final standards for superior trees, there would be no need for additional work.

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Details zur Ausgabe

• Verlag: Forgotten Books
• Erscheinungsdatum: 2018
• Sprache: Englisch
• ISBN 10: 0364547405
• ISBN 13: 9780364547403
• Einband: Taschenbuch
• Anzahl der Seiten: 102
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