Self Fertility Of A Central Oregon Source Of Ponderosa Pine Classic Reprint

Download or read book Self-Fertility of a Central Oregon Source of Ponderosa Pine (Classic Reprint) written by Frank C. Sorensen and published by Forgotten Books. This book was released on 2019-01-27 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Self-Fertility of a Central Oregon Source of Ponderosa Pine Germination tests were conducted using seeds with full-sized embryos (i. E. Seeds with embryos greater than three quarters the length of the embryo cavity). Except for five families which had too few seeds, 100-seed lots were germinated in a commercial germinator at 30° C. Day temperature and 20° C. Night temperature with 12-hour photoperiods and thermo periods. Prior to germination, seeds were stratified for 3 weeks at 5° C. The germination test was discontinued when no germination had occurred for a period of 1 week. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.