Resistance to Cronartium Ribicola in Pinus Monticola
Author: G. I. McDonald
Publisher: Forgotten Books
Published: 2017-03-13
Total Pages: 24
ISBN-13: 9780243905843
DOWNLOAD EBOOK →Excerpt from Resistance to Cronartium Ribicola in Pinus Monticola: Early Shedding of Infected Needles Shedding of infected needles before the mycelium reaches the stem would be a dis crete and effective mechanism of resistance. The needle - spots-only phenomenon suggests that such a system is operative in the white pines. This incomplete blister rust syn drome could also be explained in other ways; e.g., the mycelium could fail to reach or to penetrate the short shoot before characteristic shedding occurs or penetration of the short shoot could be followed by a reaction lethal to the fungus. The objectives of the analysis presented here were to determine: (1) the percentage of seedlings supporting needle infections 9 months after inoculation; (2) the rate at which infected needles were shed; and (3) the effectiveness of shedding as a resistance mechanism. 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.