Effect of Hydration-dehydration Treatments on Viability, Vigor and Longevity of Seeds PDF Download
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Author: Akrofi Djietror
Publisher:
ISBN:
Category : Seeds
Languages : en
Pages : 238
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Book Description
Author: Akrofi Djietror
Publisher:
ISBN:
Category : Seeds
Languages : en
Pages : 238
Get Book Here
Book Description
Author: Zhi Li
Publisher:
ISBN: 9780355451085
Category :
Languages : en
Pages :
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Book Description
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.
Author: Eric Hywel Roberts
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 474
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Book Description
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.
Author: J. Derek Bewley
Publisher: Springer Science & Business Media
ISBN: 1461446937
Category : Science
Languages : en
Pages : 400
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Book Description
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.
Author: T. D. Hong
Publisher: Bioversity International
ISBN: 9290432799
Category : Seeds
Languages : en
Pages : 62
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Book Description
This publication provides an approach by which conservationists can determine whether or not long-term seed storage is feasible for a particular species, i.e. whether or not that species shows orthodox seed storage behaviour, and provides advice on the implementation of the protocol, examples of ways in which the results from seed storage studies could be misinterpreted due to confounding factors, as well as several alternative approaches for estimating seed storage behaviour prior to carryng out actual investigations with the seeds. In particular, the latter section introduces the concept of a multicriteria approach for estimating seed storage behaviour.
Author: Mirza Hasanuzzaman
Publisher: Springer Nature
ISBN: 9811386250
Category : Science
Languages : en
Pages : 604
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Book Description
This book introduces readers to both seed treatment and seedling pretreatments, taking into account various factors such as plant age, growing conditions and climate. Reflecting recent advances in seed priming and pretreatment techniques, it demonstrates how these approaches can be used to improve stress tolerance and enhance crop productivity. Covering the basic phenomena involved, mechanisms and recent innovations, the book offers a comprehensive guide for students, researchers and scientists alike, particularly Plant Physiologists, Agronomists, Environmental Scientists, Biotechnologists, and Botanists, who will find essential information on physiology and stress tolerance. The book also provides a valuable source of information for professionals at seed companies, seed technologists, food scientists, policymakers, and agricultural development officers around the world.
Author: Susana Araújo
Publisher: BoD – Books on Demand
ISBN: 953512658X
Category : Technology & Engineering
Languages : en
Pages : 214
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Book Description
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.
Author:
Publisher: Int. Rice Res. Inst.
ISBN: 9712201732
Category : Rice
Languages : en
Pages : 380
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Book Description
Author: Roger D. Smith
Publisher: Royal Botanic Gardens Kew
ISBN:
Category : Nature
Languages : en
Pages : 1052
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Book Description
"This book is a review of the current scientific knowledge that underpins seed banking, a technology which plays a key role in the conservation of both domesticated and non-domesticated plant speices..."--Publisher description.
Author: Steve W. Adkins
Publisher: CABI
ISBN: 1845931971
Category : Technology & Engineering
Languages : en
Pages : 460
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Book Description
These proceedings contain 43 papers on the aspects of seed conservation, development, biotechnology, germination, dormancy and ecology.
