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

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Excerpt from Hereditary Variation as the Basis for Selecting Superior Forest TreesThe 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.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.