Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Seed Ageing Effects On Ornamental Seed Germination And Post Germinative Growth And Comparison Of Seed Vigor Tests
Download Seed Ageing Effects On Ornamental Seed Germination And Post Germinative Growth And Comparison Of Seed Vigor Tests full books in PDF, epub, and Kindle. Read online Seed Ageing Effects On Ornamental Seed Germination And Post Germinative Growth And Comparison Of Seed Vigor Tests ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Seed Ageing Effects on Ornamental Seed Germination and Post-Germinative Growth and Comparison of Seed Vigor Tests by : Xiaolei Hu
Download or read book Seed Ageing Effects on Ornamental Seed Germination and Post-Germinative Growth and Comparison of Seed Vigor Tests written by Xiaolei Hu and published by . This book was released on 2006 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: During storage, seed ageing is constantly occurring, leading to reductions in seed quality and field emergence and causing economic loss. Intensive research on the mechanism of seed germination and seed deterioration has been conducted in the past three decades; however, seed ageing effects on seedling growth remain to be studied. Nowadays, seeds are transported and traded globally; however, information about seed quality tests is scarce, especially for ornamental species. In this thesis, seed ageing effects on the germination and seedling growth of Salvia splendens and Lactuca sativa seeds were studied. Seeds were subjected to the ageing conditions of 85% RH and 41°C for specified time (2 and 3d for salvia, 5 and 7d for lettuce seeds). Quality testing determined that seed quality, defined by the standard germination test (SG), germination rate (GR) and Seed Vigor Imaging System (SVIS), was significantly reduced after ageing. Results showed that seed germination of all species/varieties tested was delayed after ageing, and gibberellic acid did not rescue the delay of aged seed germination or advance the germination process of unaged seeds, thus disproving the conclusion that GA initiates seed germination. Hypocotyl growth of salvia seedlings was recorded, including the measurement of cell wall extensibility, osmotic potential and turgor pressure, and cell expansion. Results indicated that ageing treatments did not affect the cellular biochemistry governing cell growth after seed germination. Records of seedling growth after ageing confirmed that post-germinative growth was not affected by ageing treatments until a critical point, below which permanent damage took place inside seeds and affected both seed germination and seedling development. Using computerized imaging technology, the Seed Vigor Imaging System (SVIS) was developed at The Ohio State University. Its application was extended to the quality assessment of ornamental species and compared with other traditional tests, i.e., standard germination test, germination rate and accelerated aging test. Results indicated that the double-stress test (germination rate following ageing) was best for detecting change in seed quality, followed by germination rate and the accelerated ageing test. SVIS needed to be adjusted for each individual species. Continuous improvement of SVIS for ornamental species is required to enhance its capability as a vigor test.
Book Synopsis Viability of Seeds by : Eric Hywel Roberts
Download or read book Viability of Seeds written by Eric Hywel Roberts and published by . This book was released on 1972 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Storage environment and the control of viability, microflora and seed deterioration, effects of mechanical injuries on viability, effects of environment before harvesting on viability, effects of environment after sowing on viability, the measurement of viability, vigour, cytological, genetical, and metabolic changes associated with loss of viability, loss of viability and crop yields, dormancy: a factor affecting seed survial in the soil, control mechanisms in the resting seed, organisation of the United States National seed storage laboratory, organisation of the National seed storage laboratory for genetic resources in Japan, viability monographs, moisture content of seeds.
Book Synopsis Seed Vigor Testing Handbook by : RIAD Z. BAALBAKI Baalbaki
Download or read book Seed Vigor Testing Handbook written by RIAD Z. BAALBAKI Baalbaki and published by . This book was released on 2009 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part one: the importance of seed vigor testing. History of seed vigor testing; standardization of seed vigor tests; seed vigor concepts. Part two: variables and general procedures in vigor testing. Variables in vigor testing; use of control samples; tolerances; proper sampling techniques; determinations of soil moisture content and water holding capacity; adjusting seed moisture content; assessing seed size (weight) variation; proper placement of replicates in germination chambers. Part three: seed vigor tests - principles. Aging tests; cold stress tests; conductivity tests; seedling performance tests; tetrazolium tests for seed vigor determination. Part four: seed vigor tests - procedures. Accelerated aging test; saturated salt accelerated aging test; controlled deterioration test; cold test; saturated cold test; cool germination test; electrical conductivity test; single seed conductivity test; potassium leakage test; speed of germination test; seedling growth rate test; computer imaging tests; tetrazolium vigor test for corn; tetrazolium vigor test for peanut; tetrazolium vigor test for cottonseed; tetrazolium vigor test for dry beans; tetrazolium vigor test for soybeans.
Book Synopsis Seed Priming and Post-priming Treatment Effects on Germination Rates and Longevity by : Zhi Li
Download or read book Seed Priming and Post-priming Treatment Effects on Germination Rates and Longevity written by Zhi Li and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: While seed priming (controlled hydration followed by drying) enhances seed germination rates, the longevity of primed seeds in storage is often reduced. Post-priming treatments involving a slow drying process to cause a partial reduction in seed moisture content prior to complete drying can restore longevity in several species compared to rapid drying after priming. The goal of this project is to develop solid matrix priming and post-priming protocols that improve seed germination performance without penalizing potential seed quality or longevity after storage. A solid matrix-based priming protocol (10 g of seeds incubated for 2 days with 12 mL of water and 20 g of AGSORBR® clay matrix followed by rapid drying) was developed for two tomato seed lots that advanced germination timing, although it accelerated loss of seed quality during storage. Similar experiments with pepper and onion seeds encountered some initial complications, including low seed viability and susceptibility to fungal growth, so experiments were continued only with tomato seeds. For both tomato seed lots (T1 and T2), two days of priming advanced germination timing but had the maximum adverse effect on subsequent storage life. After the priming but before drying, post-priming treatments were conducted on the two tomato seed lots by adding additional amounts of clay matrix (2, 4, or 6 g) into the priming treatment to reduce seed moisture content and incubating for two additional days before drying to 8% seed moisture content (dry weight basis). Controlled deterioration tests (47% RH and 50°C) were conducted on control seeds and seeds exposed to different priming and post-priming treatments and seed longevities were compared. In this study, ASTEQ Q2 Oxygen Sensing Technology was used to measure the oxygen consumption of individual seeds at frequent intervals during the priming and aging process in lieu of manual radicle emergence observations. The results for determination of priming conditions showed a high correlation between respiration rates and radicle emergence rates in the same conditions. Potential maximum longevity (Pmax) values were estimated from the aging-time model using respiration time course data. Generally, the results of post-priming treatments did not accord with our expectations, for the post-priming treatments did not extend tomato seed longevity to match that of the unprimed seeds. Although some post-priming treatments slightly increased P[subscript max] values for the T2 seed lot compared to the conventional priming treatment, the differences were small. For the T1 seed lot, the restoration treatments did not result in any improvement in longevity compared with the priming-only treatment. Curiously, in some cases there was not a clear decline in germination rates or viability with increasing aging time. Thus, further optimization is needed for post-priming treatments of tomato seeds to restore longevity in storage.
Book Synopsis The Physiology and Biochemistry of Seed Development, Dormancy, and Germination by : Anwar Ahmad Khan
Download or read book The Physiology and Biochemistry of Seed Development, Dormancy, and Germination written by Anwar Ahmad Khan and published by . This book was released on 1982 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seed development and germination; Phenotypic maternal effect of photoperiod on seed germination; Seed dormancy and germination; Seed vigor, stress and seed germination.
Book Synopsis Germination of Ornamental Plant Seeds by : Kent J. Bradford
Download or read book Germination of Ornamental Plant Seeds written by Kent J. Bradford and published by . This book was released on 1987 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seed Vigor Testing Handbook written by and published by . This book was released on 1983 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seed vigor- its meaning and application; Suggested procedures for conducting vigor tests.
Book Synopsis Seed Testing by : Sabry Gobran Elias
Download or read book Seed Testing written by Sabry Gobran Elias and published by . This book was released on 2012 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential reference for students, seed technologists, researchers, and seed industry personnel, this comprehensive guide outlines the most widely performed modern seed quality tests, explores the principles behind them, the history of seed testing, why seeds are tested and when, and sampling, sub-sampling, seed laboratory management, accreditation, and seed quality assurance programs. The authors describe statistical applications to seed testing and tolerances, and they provide a detailed morphological and structural description of seed formation and development. The book examines the testing of genetic traits and transgenic seeds, including DNA and protein genetic purity tests, and cultivar purity identification for conventional seeds. In addition to the most common seed purity and viability tests, tests for seed and seedling vigor, seed-borne diseases and seed moisture determination are also discussed.
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.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1972 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251309515 Total Pages :126 pages Book Rating :4.2/5 (513 download)
Book Synopsis Seeds Toolkit - Module 3 by : Food and Agriculture Organization of the United Nations
Download or read book Seeds Toolkit - Module 3 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-10-18 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This toolkit – made available in English, French and Spanish – will be promoted as practical guidance to assist in the implementation of the national seed strategies. It will provide a number of practical capacity building tools for essential stages of the seed value chain and targeted primarily at seed sector practitioners who will participate in special training workshops to acquire pertinent technical knowledge and will be expected in return to create a multiplier effect through further follow-up FFS trainings down to the level of seed traders and farmers. In doing so, the toolkit will be used as guidance for conducting country-led workshops and other training activities aimed at strengthening quality seed delivery systems and seed regulatory mechanisms in selected countries. The development of capacity in the production of high quality seeds, the seed replacement rates, true seed cost and realistic seed pricing mechanisms as well as the role of different stakeholders are of critical importance in the process of the formulation of national seed policies, which is one of the core areas of FAO’s delivery at the national level.
Download or read book Seed Ecology written by M.W. Fenner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the regeneration of plants from seed under field conditions. It attempts to give a reasonably balanced overview of the many aspects of this broad topic. The first chapter introduces some general ideas about reproduction in plants. Subsequent chapters deal with the early stages in the life of a plant, from ovule to established seedling, in a more or less chronological order. The final chapter shows how the data on regeneration requirements of different species can be used to explain a number of important characteristics of whole plant communities. The study of the ecological aspects of reproduction by seed touches on a range of issues of current interest in biology. A discussion of seed size and number involves a consideration of the concepts of resource allocation, life cycles and strategies. The in teractions between plants and animals seen in pollination, seed dispersal and predation provide excellent material for the study of coevolution. Investigations on regeneration from seed have greatly our understanding of the causes and maintenance of species added to diversity. The reader will find that virtually all the experiments and field observations described in this book are conceptually very simple. Many of them merely required numerous careful measurements.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251305269 Total Pages :319 pages Book Rating :4.2/5 (513 download)
Book Synopsis Manual on MUTATION BREEDING THIRD EDITION by : Food and Agriculture Organization of the United Nations
Download or read book Manual on MUTATION BREEDING THIRD EDITION written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-10-09 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper provides guidelines for new high-throughput screening methods – both phenotypic and genotypic – to enable the detection of rare mutant traits, and reviews techniques for increasing the efficiency of crop mutation breeding.
Download or read book Seeds written by Michael Fenner and published by CABI. This book was released on 2000 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of a multi-author book first published in 1992. It deals with all aspects of plant regeneration by seeds, including reproductive allocation, seed dispersal and predation, longevity, dormancy and germination. All chapters have been updated, and four new chapters added on seed size, seedling establishment, the role of gaps, and regeneration from seed after fire.
Book Synopsis Bibliography of Agriculture with Subject Index by :
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1980 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seed Handling Guidebook by : David Kolotelo
Download or read book Seed Handling Guidebook written by David Kolotelo and published by British Columbia, Tree Improvement Branch. This book was released on 2001-01-01 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
