The Improvement of Naturally Cross-Pollinated Plants by Selection in Self-Fertilized Lines, Vol. 2

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Excerpt from The Improvement of Naturally Cross-Pollinated Plants by Selection in Self-Fertilized Lines, Vol. 2: The Testing and Utilization of Inbred Strains of CornThe application of inbreeding to the improvement of corn has received an increasing amount of attention since its inception a quarter-oi a century ago. In 1932 more than acres of corn were planted in this country with seed that had resulted, in one way or another, from the crossing of inbred plants. Although the production of hybrid corn seed seems to be well started in commercial practice, the development, testing and most advantageous use of inbred strains still present many problems.The first attempt to account for the increased growth immediately resulting from cross-fertilization may be called the physiological hypothesis of hybrid stimulation. In this it was thought that the bringing together of germinally diverse elements by crossing different lines, generated the growth activity commonly referred to as hybrid vigor. Conversely, the reduced size and slower growth rate of inbred lines was considered the natural result as the germinal constitution is simplified.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.