Download or read book Effects of Stratification and Temperature on Seed Germination Speed and Uniformity in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws Classic Reprint written by John C. Weber and published by Forgotten Books. This book was released on 2018-08-30 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Effects of Stratification and Temperature on Seed Germination Speed and Uniformity in Central Oregon Ponderosa Pine (Pinus Ponderosa Dougl. Ex Laws.) Germinated seeds were counted on a variable schedule, beginning after 1 day and ending after 80 days in the germinator. Seeds were considered to have germinated when their radicle appeared millimeter long. Counts were more frequent at the beginning of the incubation period when germination was peaking; nearly half of the 50 total counts were made in the first week. Some seeds germinated during the 120 day stratification period, and they were included in the first count. Seeds destroyed by fungi were recorded and removed. Ungerminated seeds were cut open at the end of incubation; full seeds, considered potentially viable, and fungi-infected seeds were counted. The mean and standard deviation of embryo development rate towards germination were estimated for each seed lot by using a procedure suggested by Campbell and Sorensen Rate is the reciprocal of days to germination if a seed requires, for example, 4 days to germinate, its embryo development rate is units per day. Mean rate is the reciprocal of days to 50 percent germination, and standard deviation of rate is the standard deviation around mean rate. We analyzed germina tion data on the rate scale rather than the day scale because the distribution was closer to normal on the rate scale. 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.

Download or read book Effects of Stratification and Temperature on Seed Germination Speed and Uniformity in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws written by John C. Weber and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Stratification and Temperature on Seed Germination Speed and Uniformity in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Stratification and Temperature on Seed Germination Speed and Uniformity in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws written by Donald F. Flora and published by . This book was released on 1990 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Stratification and Temperature on Seed Germination and Uniformity in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws written by J. C. Weber and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geographic Variation in Speed of Seed Germination in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws Classic Reprint written by John C. Weber and published by Forgotten Books. This book was released on 2018-09-11 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Geographic Variation in Speed of Seed Germination in Central Oregon Ponderosa Pine (Pinus Ponderosa Dougl. Ex Laws) Keywords: Geographic variation, seed germination, ponderosa pine, adaptation, drought, central Oregon. 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.

Download or read book Geographic Variation in Speed of Seed Germination in Central Oregon Ponderosa Pine Pinus Ponderosa Dougl Ex Laws written by John C. Weber and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Storage Temperature on Germination of Seeds of Twenty Sources of Ponderosa Pine written by David F. Van Haverbeke and published by . This book was released on 1989 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geographic Variation in Speed of Seed Germination in Oregon Ponderosa Pine Pinus Ponderosa Dogl Ex Laws written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Stratification and Temperature on Seed Germination Speed written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Variation and Seed Transfer Guidelines for Ponderosa Pine in the Ochoco and Malheur National Forests of Central Oregon Classic Reprint written by Frank C. Sorensen and published by Forgotten Books. This book was released on 2018-02-12 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Genetic Variation and Seed Transfer Guidelines for Ponderosa Pine in the Ochoco and Malheur National Forests of Central Oregon Adaptive genetic variation in seed and seedling traits was evaluated for 280 families from 220 locations. Factor scores from three principal components were related by multiple regression to latitude, longitude, elevation, slope, and aspect of the seed source, and by classification analysis to seed zone and elevation band in seed zone. Location variance was significant but not large. Multiple regression equations explained less than 50 percent of location variance. Slope-aspect variables were important. Keywords: Pinus ponderosa, seedlings, breeding zones, provenance, genetic variation, adaptive variation, genetic diversity. 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.

Download or read book The Effect of Stratification Temperature on the Germination of Two Southern Pines written by David William Robinson and published by . This book was released on 1972 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Germination of Eastern White Pine Seed as Influenced by Stratification written by Raymond E. Graber and published by . This book was released on 1965 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2The purpose of this study was to measure the influence of stratification temperature and length of stratification period on the completeness and speed of germination in white pine seed.S3.

Download or read book Effects of Watering Treatments on Germination Survival and Growth of Ponderosa Pine written by Daniel L. Noble and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Overcoming Temperature dependent Dormancy of Southwestern Ponderosa Pine Seed written by L. J. Heidmann and published by . This book was released on 1981 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stratification Period and Germination of Douglas fir Seed from Oregon Seed Orchards Two Case Studies written by Frank C. Sorensen and published by . This book was released on 1991 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ponderosa Pine Seed Germination After Exposure to Varying Temperatures and Humidities written by Denis P. Lavender and published by . This book was released on 1955 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: