Author: Dean W. EinspahrPublisher: Forgotten Books
ISBN: 9780260435897
Category : Science
Languages : en
Pages : 38
Book Description
Excerpt from Genetics of Quaking Aspen Edmonton, Moss (1960) found that the average date of flowering for quaking aspen has been April 25 for the period 1928-1960, and occurred only after 6 days of air temperatures of 12 C or more. An increasing heat requirement for flowering in more severe cli mates could be an important survival trait, but provenance studies are needed to determine if such is the case. 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.