Studies About Mechanisms Of Oil Seed Deterioration Under Different Storage Conditions In Oilseed Rape Brassica Napus L

Author : Sangtiwa Suriyong
Publisher : Cuvillier Verlag
ISBN 13 : 3867273162
Total Pages : 119 pages
Book Rating : 4.69/5 ( download)

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Download or read book Studies about Mechanisms of Oil Seed Deterioration Under Different Storage Conditions in Oilseed Rape (Brassica Napus L.) written by Sangtiwa Suriyong and published by Cuvillier Verlag. This book was released on 2007 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 594 pages
Book Rating : 4.45/5 ( download)

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Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1994 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 712 pages
Book Rating : 4.13/5 ( download)

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Download or read book Bibliography of Agriculture written by and published by . This book was released on 1987 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Manuela Nagel
Publisher : Cuvillier
ISBN 13 : 9783736975576
Total Pages : 0 pages
Book Rating : 4.70/5 ( download)

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Download or read book Maintenance of Plant Genetic Resources. Towards an Understanding of Seed Deterioration written by Manuela Nagel and published by Cuvillier. This book was released on 2022-05-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation of biodiversity including plant genetic resources are fundamental for the future life on Earth. To safe-guard crop wild relatives, locally adapted landraces and varieties, ex situ genebanks were established at the beginning of the 20th century; primarily to store seeds. However, as any other material on Earth, seeds age and lose viability when stored for prolonged periods. The main factors determining deterioration processes are the genotype, the environmental conditions during seed development and the storage conditions including relative humidity, temperature, gas composition and pressure. To understand physiological, biochemical and genetic changes during seed deterioration in genetic resources of wheat, barley and oilseed rape, fundamental processes of germination, dormancy and seed viability loss are discussed in this book based on 13 scientific publications. Here, the loss of seed viability was investigated depending on seed moisture contents (MCs) between 5 % and >25, storage temperatures between 0°C and 45°C and a modified atmosphere with increased O2 concentration (75) or increased atmospheric pressure (18 MPa). Although, the response to the different conditions varied among species, overall, elevating seed MCs and storage temperatures led to a gradual change of biochemical mechanisms during seed deterioration. Under dry seed storage conditions, glutathione (GSH) and tocochromanols functioned as low-molecular-weight antioxidants and were degraded. Lipids were oxidised or hydrolysed, the pH decreased, whereas organic radicals accumulated over time and correlated negatively with seed viability. At high seed MCs (>13 %) and storage temperatures (>40 °C), membrane damages, changes of pH or organic radicals were absent. Furthermore, GSH and GSSG depleted whereas tocochromanols remained stable or increased. Therefore, seeds stored under high MCs and temperatures were exposed to a different environment than seeds exposed to lower MCs and temperatures

Author : Manuela Nagel
Publisher : Cuvillier Verlag
ISBN 13 : 3736938713
Total Pages : 134 pages
Book Rating : 4.17/5 ( download)

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Download or read book Seed Survival in Genebanks - Genetic and Biochemical Aspects of Seed Deterioration in Barley written by Manuela Nagel and published by Cuvillier Verlag. This book was released on 2011-09-20 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Against the background of 7.4 million accessions stored in genebanks, long-term survival of stored seeds is an important trait. This study intended to elucidate genetic and biochemical mechanisms underlying barley (Hordeum vulgare L.) seed deterioration with respect to genetic diversity at different storage treatments ranging from cold storage with low seed moisture content (smc) to experimental seed ageing with high smc. On the basis of an assumed genetic impact on seed deterioration quantitative genetic analyses using four mapping populations were applied. Seeds of three bi-parental barley mapping populations were experimentally aged. Subsequent quantitative trait locus (QTL) analyses revealed 4 major loci on chromosomes 2H, 5H and 7H explaining a phenotypic variation up to 54%. Detected loci were confirmed by the fourth population that compromises a collection of independent barley accessions. These genotypes, multiplied in two field plots and experimentally aged were analysed by a genome-wide association approach which resulted in 105 marker-trait associations (MTAs) at 32 loci. Putative functions of MTAs and closely linked QTLs revealed predominantly biotic and abiotic stress affect seed longevity. To address aspects of abiotic, including oxidative stress, the major antioxidant glutathione (GSH) and its half-cell reduction potential (EGSSG/2GSH) were analysed in a set of seeds that had lost viability during genebank storage (5 to 13 years) and a set of artificially aged seeds. A general depletion of the glutathione pool [GSH plus glutathione disulphide (GSSG)] and a shift towards more oxidising conditions occurred with decreasing viability. Highly significant correlations of viability with EGSSG/2GSH but also %GSSG were found. Plotting both parameters against each other, clusters of ageing treatments were formed presumably caused by an acidifying effect of higher smc levels during artificial ageing indicative of different processes occurring when different ageing conditions were used. Tocochromanols were predominately represented as tocotrienols and did not show any relationship with seed deterioration. Viability loss and storage was not correlated with changes in major storage compounds, starch, proteins and oil. In summary, it appears that barley seed ageing was affected by genetic factors, by environmental factors during seed development, by the smc during storage and by the type of ageing treatment.

Author : Lawrence O. Copeland
Publisher : Springer Science & Business Media
ISBN 13 : 1461516196
Total Pages : 479 pages
Book Rating : 4.94/5 ( download)

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Download or read book Principles of Seed Science and Technology written by Lawrence O. Copeland and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Fourth Edition of Principles of Seed Science and Technology, like the fIrst three editions, is written for the advanced undergraduate student or lay person who desires an introduction to the science and technology of seeds. The fIrst nine chapters present the seed as a biological system and cover its origin, development, composition, function (and sometimes nonfunction), performance and ultimate deterioration. The last nine chapters present the fundamentals of how seeds are produced, conditioned, evaluated and distributed in our modern agricultural society. Two new chapters have been added in this fourth edition, one on seed ecology and the second on seed drying. Finally, revisions have been made throughout to reflect changes that have occurred in the seed industry since publication of the Third Edition. Because of the fundamental importance of seeds to both agriculture and to all of society, we have taken great care to present the science and technology of seeds with the respect and feeling this study deserves. We hope that this feeling will be communicated to our readers. Furthermore, we have attempted to present information in a straight-forward, easy-ta-read manner that will be easily understood by students and lay persons alike. Special care has been taken to address both current state-of-the-art as well as future trends in seed technology.

Author : Johann Vollmann
Publisher : Springer Science & Business Media
ISBN 13 : 0387775943
Total Pages : 557 pages
Book Rating : 4.44/5 ( download)

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Download or read book Oil Crops written by Johann Vollmann and published by Springer Science & Business Media. This book was released on 2009-09-18 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: When one is privileged to participate long enough in a professional capacity, certain trends may be observed in the dynamics of how challenges are met or how problems are solved. Agricultural research is no exception in view of how the plant sciences have moved forward in the past 30 years. For example, the once grand but now nearly forgotten art of whole plant physiology has given way almost completely to the more sophisticated realm of molecular biology. What once was the American Society of Plant Physiologists’ is now the American Society of Plant Molecular Biology; a democratic decision to indemnify efforts to go beyond the limits of the classical science and actually begin to understand the underlying biological basis for genetic regulation of metabolic mechanisms in plants. Yet, as new technologies open windows of light on the inner workings of biological processes, one might reminisce with faint nostalgia on days long past when the artisans of plant physiology, biochemistry, analytical chemistry and other scientific disciplines ebbed and waned in prominence. No intentional reference is made here regarding Darwinism; the plant sciences always have been extremely competitive. Technology is pivotal. Those who develop and/or implement innovative concepts typically are regarded as leaders in their respective fields. Each positive incremental step helps bring recognition and the impetus to push a scientific discipline forward with timely approaches to address relevant opportunities.

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ISBN 13 :
Total Pages : 776 pages
Book Rating : 4.02/5 ( download)

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Download or read book Agrindex written by and published by . This book was released on 1992 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Susana Araújo
Publisher : BoD – Books on Demand
ISBN 13 : 953512658X
Total Pages : 214 pages
Book Rating : 4.84/5 ( download)

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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.

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ISBN 13 :
Total Pages : 1306 pages
Book Rating : 4.45/5 ( download)

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Download or read book Crop Physiology Abstracts written by and published by . This book was released on 1976 with total page 1306 pages. Available in PDF, EPUB and Kindle. Book excerpt: