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Genetic Variations In Length Of Active Growth Period Among Races Of Douglas Fir Pseudotsuga Menziesii Mirb Franco
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Book Synopsis Genetic Variations in Length of Active Growth Period Among Races of Douglas Fir, Pseudotsuga Menziesii (Mirb.) Franco by : Helge Irgens-Moller
Download or read book Genetic Variations in Length of Active Growth Period Among Races of Douglas Fir, Pseudotsuga Menziesii (Mirb.) Franco written by Helge Irgens-Moller and published by . This book was released on 1958 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Genetics Research in the Rocky Mountain and Pacific Coast States and British Columbia by : Forest Genetics Research Foundation
Download or read book Forest Genetics Research in the Rocky Mountain and Pacific Coast States and British Columbia written by Forest Genetics Research Foundation and published by . This book was released on 1958 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theses and Dissertations, 1943-1959 by : Rodney K. Waldron
Download or read book Theses and Dissertations, 1943-1959 written by Rodney K. Waldron and published by . This book was released on 1960 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts written by and published by . This book was released on 1959 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts of dissertations and monographs in microform.
Book Synopsis Abstract Bulletin of the Institute of Paper Chemistry by : Institute of Paper Chemistry (Appleton, Wis.)
Download or read book Abstract Bulletin of the Institute of Paper Chemistry written by Institute of Paper Chemistry (Appleton, Wis.) and published by . This book was released on 1959-03 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin. Library Notes by : Institute of Paper Chemistry (Appleton, Wis.). Library
Download or read book Bulletin. Library Notes written by Institute of Paper Chemistry (Appleton, Wis.). Library and published by . This book was released on 1959 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pamphlets on Silviculture written by and published by . This book was released on 1899 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliographic Series written by and published by . This book was released on 1957 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstract Bulletin of the Institute of Paper Chemistry by :
Download or read book Abstract Bulletin of the Institute of Paper Chemistry written by and published by . This book was released on 1958 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forestry Theses Accepted by Colleges and Universities in the United States by :
Download or read book Forestry Theses Accepted by Colleges and Universities in the United States written by and published by . This book was released on 1978 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pulp and Paper Manufacture written by and published by . This book was released on 1959 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Abstracts written by and published by . This book was released on 1959 with total page 2002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Variation in Shoot-growth Patterns of Douglas-fir Populations from Southwest Oregon by : Zeki Kaya
Download or read book Genetic Variation in Shoot-growth Patterns of Douglas-fir Populations from Southwest Oregon written by Zeki Kaya and published by . This book was released on 1987 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study had three objectives: (1) to teat the hypothesis that multiple flushing of the terminal shoot (intermittent growth pattern) in Douglas-fir seedlings (Pseudotsuca menziesii var. menziesii) has an adaptive significance, especially in inland populations from the drier regions in southwest Oregon; (2) to evaluate the genetic and adaptive consequences of selecting for height increment in early testing programs; (3) to evaluate the utility of indirectly selecting for height increment by directly selecting for length and number of stem units. To accomplish objectives 1 and 2, seedling families were grown from two inland and two coastal sources (160 open-pollinated families in total) for two growing seasons in two test environments. In one environment ("dry") an intermittent moisture regime was created by withholding water during the growing season until seedlings reached -12 bars of moisture stress. Seedlings were then rewatered on a weekly schedule. In the other environment ("wet"), seedlings were watered weekly to maintain water stress of seedlings at lees than -3 bars. For objective 3. seedling families from one inland and one coastal source of Douglas-fir (80 open-pollinated families) were grown in plastic tubes for two growing seasons. Results supported the hypothesis that intermittent shoot growth is of adaptive significance in Douglas-fir in the first growing season. Shoot growth patterns varied genetically both between populations and among families within populations. As expected. families from drier inland environments, where periodic summer droughts are commons responded to the intermittent moisture regime with a higher frequency of multiple flushing. Families from coastal environments, where the moisture regime is more consisitently favorable during the growing seasons were less sensitive to the dry treatment and had a much higher frequency of seedlings which continued to grow despite the imposed drought. In the second growing season. patterns of intermittent shoot growth in inland and coastal families were not as expected. Shoot growth patterns did vary genetically between inland and coastal populations. Inland populations however, did not respond to the dry treatment with a greater frequency of multiple flushing. Apparently, inland families have adapted to drier environment and shorter growing season by relying predominantly on predetermined growth for height increment and are not able to respond to favorable growing conditions by extended free growth. Coastal families however, have developed a less regulated pattern of growth and rely more heavily on free growth for attaining height increment. The magnitude of genetic and adaptive effects of selecting for height increment in early testing programs depended on the origin of population and the environment of planting site. In inland populations early selection for total height increment mainly selects for predetermined growth. This would not lead to maladaptation in the more severe planting sites of inland southwest Oregon. Selected genotypes however would not be able to take advantage of longer growing season at favorable planting sites. In coastal populations early selection for height increment mainly selects for free growth. This may lead to maladaptation on even the favorable planting sites because with increased free growth. the length of the growth period is also increased. Slecting for length and number of stem units does not appear to be an efficient way of selecting for height increment in Douglas-fir. For this procedure to be effective, heritabilities of stem-unit measurements must be higher than heritability of height increment itself. Also genetic correlations between stem-unit measurements and height increment or its components (predetermined and free growth) must be strong. In this study, heritabilities of stem-unit measurements were small and correlations were weak.
Book Synopsis Differences of Douglas-fir (Pseudotsuga Menziesii (Mirb.) Franco) Populations in Height Growth, Water Use Efficiency, and Carbon Partitioning Responses to Changes in Climate and Water Availability by : Laura P. Leites Barrios
Download or read book Differences of Douglas-fir (Pseudotsuga Menziesii (Mirb.) Franco) Populations in Height Growth, Water Use Efficiency, and Carbon Partitioning Responses to Changes in Climate and Water Availability written by Laura P. Leites Barrios and published by . This book was released on 2009 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on 1956 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases
Book Synopsis Bibliography of Pulp and Paper Making and United States Patents on Paper Making and Related Subjects by :
Download or read book Bibliography of Pulp and Paper Making and United States Patents on Paper Making and Related Subjects written by and published by . This book was released on 1959 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Pulp and Paper Manufacture by :
Download or read book Bibliography of Pulp and Paper Manufacture written by and published by . This book was released on 1959 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: