Download or read book Provenance Variation on Certain Morphological Characteristics of Indonesian Eucalyptus Urophylla S t Blake at Lad Krating Plantation Chachoengsao written by Somporn Maelim and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Witthay s n Kas ts rt written by and published by . This book was released on 2012-05 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Provenance Variation and Progeny Testing of Eucalyptus Urophylla S T blake Grown at Lad Krating Plantation Chachoensao Province written by Mandy Maid and published by . This book was released on 2006 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Altitudional Variation in Eucalyptus Urophylla S T Blake written by V. P. G. Moura and published by . This book was released on 1977 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eucalyptus urophylla S.T. Blake is a tropical species occurring naturally in a group of islands of the Lesser Sunda Archipelago, beteween 6 and 10 latitude Sourth and between 188 and 128 longitude East. E. urophylla grows in a wide range of soils from almost sea level to 2980 meters in altitude. The climate ranges from hot to cool tropical conditions with a pronounced dry seasson of about three months in the winter. A study was made of genetic variation in E. urophylla taken from an altitudional transect mostly in East Timor with the exception of one seed sample which came from 600m altitude in the nearby island of pantar. The physiological basis of the genetic variation with altitude was examined by growing seedlings fram six altitudes, 600, 1200, 1500, 2100m and 2740m, under controlled conditions. The seeds were found to vary in size with altitude, being larger in the provenances from higher altitudes. Cotyledon size was dependent on seed size and strongly affected the early seedling growth, larger cotyledons resulting in larger seedlings up to four weeks of age. After four weeks the positive relationship of cotyledon size and seedling growth changed, firstly disappearing in the six-week-old seedlings then becaming negative in seedlings at eight weeks of age. The germination of seeds in a range of constant temperature (10 to 40) showed that all provenances germinated equally weel between 20 and 32 C, with an optium around 31C. These was a slightly superior rate of germination of the high altitude provences at the lawest temperature regime. Seedlings grown at four temperatures (12, 20, 25 and 30 C) fram 12 to 22 weeks age showed that all provenances grew best at the two highest temperatures. Howeres, differences were found between provenances with a trend to decreased height and dry weight with increasing altitude. This trend was associated with changes in certain characters. Leaf size and internode length decreased with rise in altitude of seed provenance while leaf thickness increased with altitude. Two conclusions are drawn with regard to field plantations o f E. urophylla in the tropics. The firsts is that seedling selection shoud be delayed until the age at least eight weeks in order to avoid the overriding influence of seed and cotyledon size the early growth of seedlings. The second is that low altitude populations are better adapted to grow in high temperature conditions, but high altitude populations are likely to be more successful in the cool conditions found at high altitudes.

Download or read book Allelic Diversity in Cellulose and Lignin Biosynthetic Genes of Eucalyptus Urophylla S T Blake written by Mathabatha Frank Maleka and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Eucalyptus urophylla is one of the most extensively used forest tree species in plantation forestry worldwide. Commonly, E. urophylla is used in hybrid combinations with species possessing better wood properties largely because it is an exceptional grower and it imparts good disease resistance. E. urophylla is endemic to islands of the Lesser Sunda archipelago situated north of Australia. Human induced deforestation practices including urbanization are threatening the existence of several natural populations of the species throughout its range. It has become crucial that efforts be made to conserve the genetic resources in this species. To this end, a forest tree conservation genetics organization called Camcore (http://www.camcore.org) in collaboration with other forestry institutions has initiated seed collection explorations throughout the Lesser Sunda archipelago. Collected seed was sown in provenance test trials to gather information including growth performance of different genotypes in exotic locations. Comprehensive species-wide genetic diversity surveys (at the gene and genome levels) will assist in determining the genetic relationships between different E. urophylla populations, information that is relevant for guiding in situ and ex situ conservation strategies for the species. Nucleotide diversity studies exploit the diversity between homologous gene sequences from different individuals to identify the genetic variation underlying phenotypic traits. Commonly, genetic variation is in the form of single nucleotide polymorphisms (SNPs). Information on SNP diversity coupled with a detailed understanding of the molecular evolution of candidate genes including linkage disequilibrium (LD), selection and recombination may lead to the identification of haplotypes (a combination of SNPs that are inherited together) that associate with trait variation. Thus, sequence diversity surveys in candidate wood biosynthetic genes in E. urophylla may lead to the identification of allelic (SNP) haplotypes that associate with wood quality traits. Such haplotypes will be very valuable in Eucalyptus breeding programmes. The aim of the current M.Sc. study was to investigate levels of nucleotide and allelic (SNP) diversity in three candidate wood biosynthetic genes of E. urophylla. Levels of nucleotide diversity were surveyed in two cellulose biosynthetic genes, namely, cellulose synthase 1 (CesA1) and sucrose synthase 1 (SuSy1), and the lignin biosynthetic gene cinnamyl alcohol dehydrogenase 2 (CAD2) of E. urophylla. This was achieved by sequencing two DNA fragments of approximately 1000 base pairs (bp) from the 5 and 3 ends of one randomly cloned allele (for each gene) in each of the 25 E. urophylla representative individuals. These individuals originated from different families and populations across the seven islands of the Lesser Sunda archipelago. Average levels of nucleotide diversity and SNP haplotype diversity in EuCesA1, EuSuSy1 and EuCAD2 genes were approximately 1% and 0.95, respectively. SNP density was similar among the three genes with one SNP occurring every 40 bp on average. LD declined to minimal levels within 1000 bp in EuCesA1 and EuSuSy1, but remained significant across the 3000 bp length of EuCAD2. An allele-based geographic analysis based on SNP haplotypes revealed that there was no significant clustering of SNP haplotypes based on island of origin. Nonetheless, high SNP density and low LD levels suggest that the E. urophylla may be useful for high-resolution LD mapping and gene-based marker development for marker-assisted breeding programmes.

Download or read book Forest Landscape Management written by United States. Forest Service. Northern Region and published by . This book was released on 1972 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Constitution of the Kingdom of Thailand written by Thailand and published by . This book was released on 1974 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rural Women s Health written by Beverly Leipert and published by University of Toronto Press. This book was released on 2012-09-17 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The well-being of rural communities affects the well-being of those who reside in towns and cities because of rural-urban connections through food, drinking water, infectious disease, extreme environmental events, recreation, and for many, retirement residence. In rural areas themselves, women play a critical role in the health of their families and communities, yet women’s health is often marginalized or ignored. There have been limited studies to date about rural women and health in Canada. Filling an important gap in scholarship, this collection identifies priority issues that must be addressed to ensure these women’s well-being and offers innovative theoretical and methodological ideas for improvement. Rural Women’s Health integrates perspectives from rural practitioners, residents, and scholars in a variety of fields, including nursing, sociology, anthropology, and geography, to tackle issues relevant to diverse settings across the country. As such, it presents a national perspective on the nature of women’s health while respecting internal and regional diversity, as well as viewpoints from international scholarship.

Download or read book Proteins in Human Nutrition written by Joseph William Geoffrey Porter and published by . This book was released on 1973 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protein supplies and requirements; The evaluation of protein quality; The role of food science and technology; Some factors affecting the utilization of proteins; Concluding remarks.

Download or read book Radiation Preservation of Foods written by Edward S. Josephson and published by . This book was released on 1967 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Molecular Biology of Fertilization written by Heide Schatten and published by Elsevier. This book was released on 2012-12-02 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Molecular Biology of Fertilization focuses on the different aspects of fertilization in several models, including insects, clams, sea urchins, ascidians, cows, pigs, sheep, rats, hamsters, and humans. This book examines the experimental approaches using methods of molecular biology, cell biology, biochemistry, biophysics, immunology, and enzymology. Comprised of three parts encompassing 15 chapters, this book starts by discussing the ability of egg factors to affect sperm motility and initiate the acrosome reaction by modifying ion movements across the sperm plasma membrane. This text then provides an overview of the different aspects of egg architecture, ranging from extracellular remodeling to nuclei organization, which is involved in embryogenesis and fertilization. Finally, the last part deals with oncogenes, gene expression, and nuclear determination during embryogenesis and at fertilization. This book will be a great value to molecular biologists, cell biologists, reproductive biologists, developmental biologists, biophysicists, biochemists, geneticists, researchers, scientists, and students.

Download or read book Regional Trading Arrangements Among Developing Countries written by Dean A. DeRosa and published by Intl Food Policy Res Inst. This book was released on 1995-01-01 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The international setting and the resurgence of regionalism; Regional trading arrangements in economic theory; The ASEAN economies in the global trading system; ASEAN economic arrangements and the free trade area plan; Quantitative analysis of the AFTA plan.

Download or read book Prehistoric Studies written by Thai Antiquity Working Group and published by . This book was released on 1988 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fungal Protoplasts written by J. Peberdy and published by CRC Press. This book was released on 1985-02-20 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until now, information on fungal protoplasts has been scattered throughout various sources. With authoritative reviews of protoplast isolation and applications in fungal biology research, Fungal Protoplasts: Applications in Biochemistry and Genetics is the first volume devoted to a major area in experimental mycology-fungal protoplasts. Written by 18 pioneering experts, this unmatched, illustrated reference presents well-established knowledge of protoplast research as well as newer ideas and methods. The book encompasses advances in protoplast isolation techniques and methodology, uses of protoplasts in physiological, biochemical, and genetic studies, and developments in protoplast fusion that form the basis for transformation and gene cloning experiments, including applications in industrial biotechnology. This fact-filled book also features end-of-chapter bibliographies for further research.

Download or read book Bacterial Wilt of Potato written by C. Martin and published by International Potato Center. This book was released on 1985 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Social Planning written by Jessie P. H. Poon and published by Edward Elgar Publishing. This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a careful selection of the key contributions to social planning produced by leading scholars in the field. It addresses the many ethical and distributional matters which enter into planning processes. Many of these concern the involvement of social values and norms into otherwise positive structures. This authoritative collection includes not only papers which look at social planning from an abstract, academic perspective but also more applied work in the field. The opening section examines the theory and methodology of social planning. The focus is on concepts such as social justice and social equity, with concern as much for their application as for their definition. The next two parts look firstly at the particular matter of sustainable development in its broadest sense, and secondly at amenities and social organization. Somewhat in contrast to this, the following part embraces papers which consider spatial mismatch and ways of planning to minimize such mismatches - or at least their impact. The last section of the collection presents two alternative planning models. This volume will be an essential source of reference for academics, researchers and practitioners concerned with social planning.

Download or read book Dementia and Normal Aging written by Felicia A. Huppert and published by Cambridge University Press. This book was released on 1994-06-30 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Age has been identified as the strongest risk factor for Alzheimer's disease, and is also strongly associated with vascular dementia. With this relationship in mind, this book looks upon the challenge of dementia as establishing its true relationship with normal aging. The traditional disease model of dementia may have obscured important clues about many underlying causes and features of dementia. In this book, experts and pioneers in the fields of aging and dementia make an important contribution to the understanding of dementia by reappraising the latest research in the light of the continuum model. Evidence for and against numerous models of dementia are discussed with particular relevance to the relationship between Alzheimer's and normal aging. Ranging from molecular genetics and fundamental neurobiology to issues of diagnosis and the provision of services, this is a challenging work in its breadth and level of argument, which has far reaching implications for the study of dementia, and indeed of the mind itself. As a review of current thinking and research it will serve as an essential text for clinicians and scientific investigators.