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Exogenous And Endogenous Factors Related To Seed Germination And Vigor In Certain Varieties Of Sugarbeet Beta Vulgaris L
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Book Synopsis Exogenous and Endogenous Factors Related to Seed Germination and Vigor in Certain Varieties of Sugarbeet Beta Vulgaris L. by : Syng Chul Kim
Download or read book Exogenous and Endogenous Factors Related to Seed Germination and Vigor in Certain Varieties of Sugarbeet Beta Vulgaris L. written by Syng Chul Kim and published by . This book was released on 1970 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were conducted on the causes of low germination of monogerm sugarbeet seed grown in western Oregon. Emphasis was placed on the identification and measurement of endogenous inhibitors as related to the germination and vigor. Both qualitative and quantitative analytical methods were applied to examine the organic substances in the aqueous seedball extracts as influenced by environmental factors during maturation. Effects of exogenous factors such as harvest time after anthesis, liming of the soil and post harvest drying temperature on the subsequent germination were examined. Attempts were made to improve germination potential of a given seed lot by pre-germination treatments. Effects of soaking, leaching and drying upon germination were compared and examined. Leaching studies were further expanded to measure the change of inhibitor content at various leaching intervals and to relate concentrations to germination and vigor. Varying concentrations of gibberellic acid (potassium salt) were applied to germinating seed to examine effects on seed dormancy. Five phenolic compounds and oxalic acid as the soluble and insoluble salt were shown to be present in the sugarbeet fruit. Among the five known phenolic substances, ferulic acid was most inhibitory to germination. Oxalic acid at various levels of concentration did not influence germination although oxalic acid did inhibit the seedling growth at relatively low concentrations. Among four sugarbeet seed samples tested, a low germinating lot (variety 4426) was shown to contain the least amount of oxalic acid, however, ferulic acid content of this lot was considerably higher than the others. It was concluded that oxalic acid was not involved in dormancy of the seed samples tested. Among the several pre-germination treatments tested to improve germination potential of the given varieties, complete drying after leaching of seed samples showed the best response. Germination potential of the monogerm varieties used in these studies greatly increased by drying them completely after leaching. Vigor as measured by length of seedlings was markedly improved. Simple leaching did not improve germination. Optimum leaching time for best germination of the varieties tested was from 12 to 20 hours.
Book Synopsis Some Factors Affecting Germination in Sugar Beet Seeds (Beta Vulgaris L.). by : James Robert Hunter
Download or read book Some Factors Affecting Germination in Sugar Beet Seeds (Beta Vulgaris L.). written by James Robert Hunter and published by . This book was released on 1951 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of External Factors on Growth and Development of Sugar-beet (Beta Vulgaris L.) by : A. L. Smit
Download or read book Influence of External Factors on Growth and Development of Sugar-beet (Beta Vulgaris L.) written by A. L. Smit and published by Bernan Press(PA). This book was released on 1983 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth and bolting seem to be correlated, as plants with just visible bolting were usually heavier.
Book Synopsis Seed Development and Germination of Monogerm Sugar Beets (Beta Vulgaris L.) as Affected by Maturity by : Dennis M. TeKrony
Download or read book Seed Development and Germination of Monogerm Sugar Beets (Beta Vulgaris L.) as Affected by Maturity written by Dennis M. TeKrony and published by . This book was released on 1969 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maturation rates of monogerm sugar beet seed grown in Western Oregon were measured quantitatively to determine attainment of maximum seed development and germination. Seed was collected at various intervals after anthesis from two hybrid varieties representing the extremes in resistance (hard bolting) and susceptibility (easy bolting) to seedstalk development. The effects of harvesting procedures on seed development and germination were compared at the various stages of maturity using simulated direct and windrow methods. Maturity as determined by maximum germination and dry seed weight occurred at 40, 43 and 45 days after anthesis for the three years studied. Heat units accumulated from anthesis to maturity remained constant for all three years, even though 1965 was much warmer. It was concluded that the seed on sugar beet plants should be mature after 900 heat units are attained or 45 days after peak anthesis. The primary factor lowering the germination potential of mature seed was the occurrence of underdeveloped seeds, Chemical inhibitors in the sugar beet fruits as measured by firm ungerminated seeds may also reduce the germination for seed collected prior to maturity. Some seeds were capable of germination 20 days after anthesis. Plants and seeds of the hard bolting variety remained green throughout the maturation period, whereas easy bolting plants reached senesence and shattered. Plant appearance and percent moisture content were not found to be reliable indicators of sugar beet seed maturity. Maximum germination and dry seed weight were attained at nearly the same levels regardless of harvesting method used. Sugar beets cut prematurely continued seed development while drying on the windrowed plant, but also contained more substances inhibitory to germination. It was determined that germination, dry seed weight, heat unit accumulation and days from anthesis to maturity could all be used to estimate the optimum stage to harvest sugar beets for seed.
Book Synopsis Theses and Dissertations, 1966-1970, Oregon State University by : Margaret Basilia Guss
Download or read book Theses and Dissertations, 1966-1970, Oregon State University written by Margaret Basilia Guss and published by . This book was released on 1973 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theses and Dissertations ... Oregon State University by :
Download or read book Theses and Dissertations ... Oregon State University written by and published by . This book was released on 1973 with total page 84 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 1973 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seed Development in Monogerm Sugar Beets (Beta Vulgaris L.) as Influenced by Certain Nutrients by : Leland Ray Schweitzer
Download or read book Seed Development in Monogerm Sugar Beets (Beta Vulgaris L.) as Influenced by Certain Nutrients written by Leland Ray Schweitzer and published by . This book was released on 1969 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of several fertilizer elements on the occurrence of underdeveloped seeds in monogerm sugar beets (Beta vulgaris L.) was studied. Lime (CaCO3), nitrogen, phosphorus and potassium fertilizer applications were made to sugar beet seed plots at two locations in the Willamette Valley, Oregon. Seed produced from each treatment was examined by radiography to determine the percentage of fruits containing underdeveloped seeds. Underdeveloped seeds include those which are completely absent from the fruit locule and those which are only partially developed. High nitrogen fertilization negatively influenced seed development, causing an increase in the occurrence of underdeveloped seeds. A larger difference in underdeveloped seeds was noted, however, between the two experimental locations. Lime, phosphorus and potassium applications had no apparent influence on seed development. Experimental locations and nitrogen fertilizer levels influenced the concentrations of several nutrient elements in the sugar beet petioles. But no association was apparent between plant nutritional status and the occurrence of underdeveloped seeds. It was concluded that inadequate or imbalanced fertilizer applications were not the primary factors impeding sugar beet seed development. Although excess nitrogen fertilization was detrimental to seed development, it accounted for only a fraction of the total underdeveloped seeds obtained.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1981 with total page 1852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Challenges in Seed Biology by : Susana Araújo
Download or read book New Challenges in Seed Biology written by Susana Araújo and published by BoD – Books on Demand. This book was released on 2016-10-12 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Challenges in Seed Biology - Basic and Translational Research Driving Seed Technology combines different aspects of basic and translational research in seed biology. A collection of eight chapters written by seed biology experts from the field of seed physiology, ecology, molecular biology, biochemistry, and seed technology was gathered. We hope that this book will attract the attention of researchers and technologists from academia and industry, providing points for interactive and fruitful discussion on this fascinating topic.
Book Synopsis Handbook of Seed Physiology by : Roberto Benech-Arnold
Download or read book Handbook of Seed Physiology written by Roberto Benech-Arnold and published by CRC Press. This book was released on 2004-09-21 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest findings in seed physiologydiscussed as they relate to agricultural problems! Presenting the latest findings in the area of seed physiology as well as the practical applications of that knowledge in the field, the Handbook of Seed Physiology: Applications to Agriculture provides a comprehensive view of seed biology and it
Book Synopsis Ascorbic Acid in Plant Growth, Development and Stress Tolerance by : Mohammad Anwar Hossain
Download or read book Ascorbic Acid in Plant Growth, Development and Stress Tolerance written by Mohammad Anwar Hossain and published by Springer. This book was released on 2018-03-19 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ascorbic acid (AsA), vitamin C, is one of the most abundant water-soluble antioxidant in plants and animals. In plants AsA serves as a major redox buffer and regulates various physiological processes controlling growth, development, and stress tolerance. Recent studies on AsA homeostasis have broadened our understanding of these physiological events. At the mechanistic level, AsA has been shown to participate in numerous metabolic and cell signaling processes, and the dynamic relationship between AsA and reactive oxygen species (ROS) has been well documented. Being a major component of the ascorbate-glutathione (AsA-GSH) cycle, AsA helps to modulate oxidative stress in plants by controlling ROS detoxification alone and in co-operation with glutathione. In contrast to the single pathway responsible for AsA biosynthesis in animals, plants utilize multiple pathways to synthesize AsA, perhaps reflecting the importance of this molecule to plant health. Any fluctuations, increases or decreases, in cellular AsA levels can have profound effects on plant growth and development, as AsA is associated with the regulation of the cell cycle, redox signaling, enzyme function and defense gene expression. Although there has been significant progress made investigating the multiple roles AsA plays in stress tolerance, many aspects of AsA-mediated physiological responses require additional research if AsA metabolism is to be manipulated to enhance stress-tolerance. This book summarizes the roles of AsA that are directly or indirectly involved in the metabolic processes and physiological functions of plants. Key topics include AsA biosynthesis and metabolism, compartmentation and transport, AsA-mediated ROS detoxification, as well as AsA signaling functions in plant growth, development and responses to environmental stresses. The main objective of this volume is therefore to supply comprehensive and up-to-date information for students, scholars and scientists interested in or currently engaged in AsA research.
Book Synopsis Ecophysiology and Responses of Plants under Salt Stress by : Parvaiz Ahmad
Download or read book Ecophysiology and Responses of Plants under Salt Stress written by Parvaiz Ahmad and published by Springer Science & Business Media. This book was released on 2012-11-09 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will shed light on the effect of salt stress on plants development, proteomics, genomics, genetic engineering, and plant adaptations, among other topics. Understanding the molecular basis will be helpful in developing selection strategies for improving salinity tolerance. The book will cover around 25 chapters with contributors from all over the world.
Download or read book Seeds written by Steve W. Adkins and published by CABI. This book was released on 2007-01-01 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings contain 43 papers on the aspects of seed conservation, development, biotechnology, germination, dormancy and ecology.
Download or read book Seeds written by J. Derek Bewley and published by Springer Science & Business Media. This book was released on 2012-10-23 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated and much revised third edition of Seeds: Physiology of Development, Germination and Dormancy provides a thorough overview of seed biology and incorporates much of the progress that has been made during the past fifteen years. With an emphasis on placing information in the context of the seed, this new edition includes recent advances in the areas of molecular biology of development and germination, as well as fresh insights into dormancy, ecophysiology, desiccation tolerance, and longevity. Authored by preeminent authorities in the field, this book is an invaluable resource for researchers, teachers, and students interested in the diverse aspects of seed biology.
Book Synopsis Crop Stress and its Management: Perspectives and Strategies by : B. Venkateswarlu
Download or read book Crop Stress and its Management: Perspectives and Strategies written by B. Venkateswarlu and published by Springer Science & Business Media. This book was released on 2011-11-22 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crops experience an assortment of environmental stresses which include abiotic viz., drought, water logging, salinity, extremes of temperature, high variability in radiation, subtle but perceptible changes in atmospheric gases and biotic viz., insects, birds, other pests, weeds, pathogens (viruses and other microbes). The ability to tolerate or adapt and overwinter by effectively countering these stresses is a very multifaceted phenomenon. In addition, the inability to do so which renders the crops susceptible is again the result of various exogenous and endogenous interactions in the ecosystem. Both biotic and abiotic stresses occur at various stages of plant development and frequently more than one stress concurrently affects the crop. Stresses result in both universal and definite effects on plant growth and development. One of the imposing tasks for the crop researchers globally is to distinguish and to diminish effects of these stress factors on the performance of crop plants, especially with respect to yield and quality of harvested products. This is of special significance in view of the impending climate change, with complex consequences for economically profitable and ecologically and environmentally sound global agriculture. The challenge at the hands of the crop scientist in such a scenario is to promote a competitive and multifunctional agriculture, leading to the production of highly nourishing, healthy and secure food and animal feed as well as raw materials for a wide variety of industrial applications. In order to successfully meet this challenge researchers have to understand the various aspects of these stresses in view of the current development from molecules to ecosystems. The book will focus on broad research areas in relation to these stresses which are in the forefront in contemporary crop stress research.
Book Synopsis The Encyclopedia of Seeds by : J. Derek Bewley
Download or read book The Encyclopedia of Seeds written by J. Derek Bewley and published by CABI. This book was released on 2006 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first scholarly reference work to cover all the major scientific themes and facets of the subject of seeds. It outlines the latest fundamental biological knowledge about seeds, together with the principles of agricultural seed processing, storage and sowing, the food and industrial uses of seeds, and the roles of seeds in history, economies and cultures. With contributions from 110 expert authors worldwide, the editors have created 560 authoritative articles, illustrated with plentiful tables, figures, black-and-white and color photographs, suggested further reading matter and 670 supplementary definitions. The contents are alphabetically arranged and cross-referenced to connect related entries.
