Download or read book Regulation of Tomato Ripening and Post Harvest Storage written by Joe H. Cherry and published by . This book was released on 1993 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular and Metabolic Mechanisms Associated with Fleshy Fruit Quality written by Ana M. Fortes and published by Frontiers Media SA. This book was released on 2017-09-08 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fleshy Fruits are a late acquisition of plant evolution. In addition of protecting the seeds, these specialized organs unique to plants were developed to promote seed dispersal via the contribution of frugivorous animals. Fruit development and ripening is a complex process and understanding the underlying genetic and molecular program is a very active field of research. Part of the ripening process is directed to build up quality traits such as color, texture and aroma that make the fruit attractive and palatable. As fruit consumers, humans have developed a time long interaction with fruits which contributed to make the fruit ripening attributes conform our needs and preferences. This issue of Frontiers in Plant Science is intended to cover the most recent advances in our understanding of different aspects of fleshy fruit biology, including the genetic, molecular and metabolic mechanisms associated to each of the fruit quality traits. It is also of prime importance to consider the effects of environmental cues, cultural practices and postharvest methods, and to decipher the mechanism by which they impact fruit quality traits. Most of our knowledge of fleshy fruit development, ripening and quality traits comes from work done in a reduced number of species that are not only of economic importance but can also benefit from a number of genetic and genomic tools available to their specific research communities. For instance, working with tomato and grape offers several advantages since the genome sequences of these two fleshy fruit species have been deciphered and a wide range of biological and genetic resources have been developed. Ripening mutants are available for tomato which constitutes the main model system for fruit functional genomics. In addition, tomato is used as a reference species for climacteric fruit which ripening is controlled by the phytohormone ethylene. Likewise, grape is a reference species for non-climacteric fruit even though no single master switches controlling ripening initiation have been uncovered yet. In the last period, the genome sequence of an increased number of fruit crop species became available which creates a suitable situation for research communities around crops to get organized and information to be shared through public repositories. On the other hand, the availability of genome-wide expression profiling technologies has enabled an easier study of global transcriptional changes in fruit species where the sequenced genome is not yet available. In this issue authors will present recent progress including original data as well as authoritative reviews on our understanding of fleshy fruit biology focusing on tomato and grape as model species.

Download or read book Regulation of Fruit Ripening and Senescence written by Carlos R. Figueroa and published by Frontiers Media SA. This book was released on 2021-09-27 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Post harvest Treatment on Ripening and Quality of Tomato Fruit Using Ozone written by Milad A. Shalluf and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Tomatoes are widely produced and consumed due to their nutritional content and versatility. However, the tomato is a soft fruit liable to damage and flavour deterioration. Hence, the main challenge for the tomato producing industry is to prevent the high loss incurred during harvest, handling and transportation of the crops. The objective of this study was to investigate the overall nutritional implication of controlled storage of tomatoes using ozone on the ripening process and the basic nutritional components of tomatoes. This investigation was also designed to focus on the effect of different ozone doses on the basic components and properties (carotenoids, ascorbic acid, total antioxidant activity and soluble sugars content) of the quality and dynamic maturity of tomatoes. Green tomatoes (Rio Grande) were treated in glass chambers with ozone enriched air [(air + 2, 7 and 21 mg O3/g tomato) and control (air only)] under humidity and temperature of 90-95% and 14-17 oC respectively. Tomatoes were sampled after 14 days of ozone treatment in the storage chamber and analyzed for different quality parameters (appearance, weight loss, Total Soluble Solids (TSS), titratable acidity, total ascorbic acid and carotene) of the ripening. The variety Elegance tomatoes were selected and the fruits were graded by colour and subjected to treatment with ozone (in doses 0 (clean air), 0.25, 0.50, and1.00 mg O3/g tomatoes) during storage for 6 days under the same humidity and temperature conditions. The fruits were analysed for carotenoids, ascorbic acid content, total antioxidant activity and soluble sugars. Analysis of the fruits clearly showed that ozone significantly delayed the development of colour on the surface, particularly in the low doses, and caused black spots on the surface of the tomatoes, particularly in higher ozone doses. Ozone did not affect the ascorbic acid and titratable acidity content. However ozone did reduce the Total Soluble Solids (TSS) by about 10% at the lowest ozone dose. A high inhibition of accumulation of carotenoids, particularly at low dose, of the tomatoes (Rio Grande) was also observed. Tomatoes (Elegance) under ozone treatments contained higher ß-carotene than those under the control treatment and lycopene content increased during storage in the red stage of tomato fruits. Ascorbic acid (AsA), dehydroascorbic acid (DHA) and the total of AsA and DHA concentrations, and ratios of redox (ASA/ (ASA + DHA) and DHA/AsA in pericarp and pulp of tomatoes tissue, did not show clear differences between the different treatments. The concentrations of the glucose and fructose increased in the tomatoes which were subjected to ozone treatments. Results from this study show that controlled atmosphere storage of tomatoes using ozone is a viable technique which warrants further study.

Download or read book Tomato and Pepper Production in the Tropics written by and published by Agribookstore/Winrock. This book was released on 1989 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic resources and conservation. Varietal improvement. Stress physiology. Disease and pests. Integrated pest management. Cultural management. Country reports.

Download or read book The Tomato Crop written by J. Atherton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tomato is commercially important throughout the world both for the fresh fruit market and the processed food industries. It is grown in a wide range of climates in the field, under protection in plastic greenhouses and in heated glasshouses. Genetic, physiological and pathological investigations frequently adopt the tomato plant as a convenient subject. Hitherto, much of the information on tomatoes has been fragmented: tomatoes grown in the field and under protection have been considered separately and the more fundamental findings from research have often failed to reach those involved directly or indirectly in commercial crop production. Similarly, the research scientist is often unaware of the problems of commercial crop production and the possible relevance of his work to the crop. This book is an attempt to rectify that situation. By giving a thorough scientific review of all factors influencing tomato production systems, it is hoped that this book will prove useful to students, researchers and commercial producers alike. It gives the basis for the develop ment of improved cultivars, the formulation of strategies for managing pest, disease and disorder problems and the production of high yields of good quality fruit as well as suggesting important areas for scientific initiatives. The extensive bibliographies provide a comprehensive database for tomato researchers. Such a vast subject could not be covered with authority by anyone author.

Download or read book Biochemistry of Fruit Ripening written by G.B. Seymour and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is over 20 years since the publication of A.c. Hulme's two volume text on The Biochemistry of Fruits and thei.r Products. Whilst the bulk of the information contained in that text is still relevant it is true to say that our understanding of the biochemical and genetic mech

Download or read book Ripening and Storage Behavior of Harvested Mature Green Tomatoes Following Various Exposures to High Temperature and Direct Sunlight written by Rafael Pulgar 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 Understanding the Spatio temporal Physiological and Molecular Basis of Postharvest Chilling Injury in Tomato Fruit written by Karin Albornoz and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Growing human population and climate change are imposing increasing pressures to the sustainability of agricultural production systems. Reducing postharvest losses has then become a crucial strategy for sustaining the rising demand for food with fewer resources.Refrigeration is effectively used to extend shelf-life, preserve quality and delay the deterioration of horticultural commodities. However, in those commodities of tropical and subtropical origin, refrigeration leads to the development of a physiological disorder known as postharvest chilling injury (PCI), which shortens shelf-life and contributes to increasing postharvest losses. Tomato (Solanum lycopersicum L.) is a crop of economic relevance, a model system for the study of fleshy-fruited species. It is subtropical in origin, cold-sensitive and susceptible to PCI. In tomato fruit, PCI is initiated during chilling storage (0-12°C) and is manifested after rewarming to room temperature. PCI’s symptoms include the inability to ripen normally, the development of surface lesions, and higher susceptibility to decay. PCI represents the final stage of a series of complex alterations starting with physical changes in cellular membranes, which trigger a signal transduction cascade, involving the action of numerous molecular players such as second messengers and transcription factors. PCI’s severity is aggravated with lower temperatures (e.g. more severe at 2.5°C than at 7°C), longer storage in the cold, and in fruit that are not fully ripened. PCI has been extensively studied in tomato, however, knowledge about its molecular basis is still fragmentary, and mostly focused on the outermost fruit layer, the pericarp. Considering that ripening progresses at different rates across tissues, then of PCI’s onset and progress are likely to be heterogeneous in different fruit fractions. The cold response pathway is well characterized in the model Arabidopsis thaliana, where the CBF family of transcription factors is known to be relevant for the development of cold tolerance and acclimation to freezing temperatures. The constitutive overexpression of members of this gene family (CBF1-3) in tomato plants, increased chilling tolerance but caused pleiotropic effects, such as reduced plant growth and delayed flowering. Fruit response to chilling was not assessed in these reports. Two main hypotheses were tested in this study, 1) PCI development is heterogeneous across fruit tissues. This was examined in Chapter I. 2) overexpression of the CBF1 gene would lead to increases in fruit chilling tolerance and amelioration of PCI manifestation. This was documented in Chapters II and III, with future experiments stated in Chapter IV. The first chapter of this dissertation was focused on understanding the development of PCI in the pericarp, columella or locular tissues in cherry tomato fruit cv. Sungold during storage at chilling (2.5 or 5°C), control (12.5°C), or followed by rewarming (20°C) conditions for up to four weeks. Postharvest parameters such as respiration and ethylene production, objective color, chilling injury index (CII) and ion leakage were measured, and correlated with biophysical (Magnetic Resonance Imaging or MRI), biochemical (malondialdehyde or MDA, and starch contents) and molecular (gene expression) analyses. Ion leakage and MRI data analysis showed that chilling stress interferes with the normal membrane disassembly and liquefaction that occur during fruit ripening. Biochemical assays revealed that fruit starch and MDA contents are tissue-specific and sensitive to cold. The expression of the genes analyzed showed distinct temporal and spatial specificity. These results confirmed our hypothesis that the cold response across fruit tissues is heterogeneous, as cold stress mediated the decoupling of molecular, biochemical and physiological processes that occur synchronously during normal ripening. In the second and third chapters of our study, we hypothesized that inducing CBF1 overexpression from Arabidopsis (Chapter II), or the wild tomato relative Solanum habrochaites and cultivated tomato (Chapter III), specifically in tomato fruit cv. Micro-Tom during postharvest chilling would increase chilling tolerance and reduce PCI symptoms, while avoiding pleiotropic effects. The second chapter describes the generation of three independent transgenic lines using a chemical-inducible gene expression system to drive AtCBF1 induction by dexamethasone (DEX). Postharvest fruit phenotypes and the induction of AtCBF1 expression in these transgenic tomato lines were tested after varying storage times (from two hours to three weeks), temperature regimes (2.5 or 12.5°C, or followed by rewarming at 20°C), chemical treatments (5 or 50 [mu]M DEX, or water), duration (30 min or 1 hour) or frequency (one-time or every three days) of chemical incubation. AtCBF1 was induced by DEX application in a concentration-dependent fashion, thus validating the use of this expression system. However, there was evidence of leakiness. Fruit color was affected in the transgenic lines across treatments, and exhibited differences relative to wild-type fruit. DEX treatment accelerated ripening and senescence in some genotypes but did not affect others, and did not elicit changes in wild-type fruit. Overall, the spectrum of postharvest phenotypes obtained need to be further studied and correlated with changes in AtCBF1 expression to determine if the upregulation of this gene is able to increase fruit chilling tolerance. The use of a stress-inducible promoter (RD29A) driving ShCBF1 or SlCBF1 expression in fruit postharvest chilling is documented in the third chapter of the dissertation. Gene expression data confirmed the upregulation of the transgene during cold stress, and the absence of leaky induction. Remarkably, CBF1 upregulation did not alleviate PCI as hypothesized, but aggravated its symptoms, accelerated fruit decay and deterioration, and further compromised fruit’s ability to resume ripening after rewarming, in relation to the wild-type control. To study the effect of fruit chilling on progeny performance of under cold stress, wild-type chilling- and non-acclimated seedlings were exposed to cold stress (0 or 2.5°C) for three days. Photosynthetic efficiency of chilled seedlings decreased in comparison to non-chilled seedlings, but protective mechanisms against photoinhibition and oxidative damage were enhanced in the former. This suggests that chilling acclimation of seeds in fructus can enhance chilling tolerance at the vegetative stage. When non-acclimated transgenic seedlings were exposed to the same conditions, their photosynthetic responses to cold stress were heterogeneous in relation to wild type samples, and suggest to be dependent on the level of CBF1 overexpression. Altogether, these results suggest that additional studies are required to further understand the complexity and specificity of CBF1 roles in different tissues and developmental stages, and to elucidate its role in the development of PCI in tomato fruit.

Download or read book Control Applications in Post Harvest and Processing Technology 1995 written by J. De Baerdemaeker and published by Elsevier. This book was released on 2016-01-22 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1st IFAC/CIGR/EURAENG/ISHS Workshop on Control Applications in Post-Harvest and Processing Technology (CAPPT '95) provides the opportunity to discuss and evaluate the state of the art and application of control methods in storage and processes of agricultural and horticultural products. This publication, generated from the papers at the workshop, provides a detailed assessment of present and future developments of key technologies within the agricultural and horticultural fields.

Download or read book The Commercial Storage of Fruits Vegetables and Florist and Nursery Stocks written by Robert E. Hardenburg and published by . This book was released on 1986 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Note for the electronic edition: This draft has been assembled from information prepared by authors from around the world. It has been submitted for editing and production by the USDA Agricultural Research Service Information Staff and should be cited as an electronic draft of a forthcoming publication. Because the 1986 edition is out of print, because we have added much new and updated information, and because the time to publication for so massive a project is still many months away, we are making this draft widely available for comment from industry stakeholders, as well as university research, teaching and extension staff.

Download or read book Postharvest Biology and Technology of Fruits Vegetables and Flowers written by Gopinadhan Paliyath and published by John Wiley & Sons. This book was released on 2009-03-16 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: An increased understanding of the developmental physiology, biochemistry, and molecular biology during early growth, maturation, ripening, and postharvest conditions has improved technologies to maintain the shelf life and quality of fruits, vegetables, and flowers. Postharvest Biology and Technology of Fruits, Vegetables, and Flowers provides a comprehensive introduction to this subject, offering a firm grounding in the basic science and branching out into the technology and practical applications. An authoritative resource on the science and technology of the postharvest sector, this book surveys the body of knowledge with an emphasis on the recent advances in the field.

Download or read book Resistance to Postharvest Pathogens of Tomato Ripening Mutants and Hybrids Developed for Extended Storage Life written by Rivka Barkai-Golan and published by . This book was released on 1988 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Postharvest Biology and Nanotechnology written by Gopinadhan Paliyath and published by John Wiley & Sons. This book was released on 2019-01-30 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive introduction to the physiology, biochemistry, and molecular biology of produce growth, paired with cutting-edge technological advances in produce preservation Revised and updated, the second edition of Postharvest Biology and Nanotechnology explores the most recent developments in postharvest biology and nanotechnology. Since the publication of the first edition, there has been an increased understanding of the developmental physiology, biochemistry, and molecular biology during early growth, maturation, ripening, and postharvest conditions. The contributors—noted experts in the field—review the improved technologies that maintain the shelf life and quality of fruits, vegetables, and flowers. This second edition contains new strategies that can be implemented to remedy food security issues, including but not limited to phospholipase D inhibition technology and ethylene inhibition via 1-MCP technology. The text offers an introduction to technologies used in production practices and distribution of produce around the world, as well as the process of sencescence on a molecular and biochemical level. The book also explores the postharvest value chain for various produce, quality evaluation techniques, and the most current nanotechnology applications. This important resource: • Expands on the first edition to explore in-depth postharvest biology with emphasis on developments in nanotechnology • Contains contributions from leaders in the field • Includes the most recent advances in postharvest biology and technology, including but not limited to phospholipase D and 1-MCP technology • Puts the focus on basic science as well as technology and practical applications • Applies a physiology, biochemistry, and biotechnology approach to the subject Written for crop science researchers and professionals, horticultural researchers, agricultural engineers, food scientists working with fruits and vegetables, Postharvest Biology and Nanotechnology, Second Edition provides a comprehensive introduction to this subject, with a grounding in the basic science with the technology and practical applications.

Download or read book The Impact of Postharvest Handling Regimes on Firmness and Slice Integrity of Tomatoes Lycopersicon Esculentum Mill written by Armando Martinez and published by . This book was released on 1994 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Postharvest Physiology and Hypobaric Storage of Fresh Produce written by Stanley P. Burg and published by CABI. This book was released on 2004-06-28 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypobaric (low-pressure) storage offers considerable potential as a method to prevent postharvest loss of horticultural and other perishable commodities, such as fruit, vegetables, cut flowers and meat. Yet hitherto there has been no comprehensive evaluation and documentation of this method and its scientific basis.Written by the world's leading authority on hypobaric storage Postharvest Physiology and Hypobaric Storage of Fresh Produce fills this gap in the existing literature. The first part of the book provides a detailed account of the metabolic functions of gases, and the mechanisms of postharvest gas exchange, heat transfer and water loss in fresh produce. The effect of hypobaric conditions on each process is then considered, before a critical review of all available information on hypobaric storage. This includes horticultural commodity requirements, laboratory research, and the design of hypobaric warehouses and transportation containers.

Download or read book Fruit and Vegetables written by Anthony Keith Thompson and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this very well-received book, which in itsfirst edition was entitled Postharvest Technology of Fruits andVegetables, has been welcomed by the community of postharvestphysiologists and technologists who found the first edition of suchgreat use. The book covers, in comprehensive detail, postharvestphysiology as it applies to postharvest quality, technologyrelating to maturity determination, harvesting, packaging,postharvest treatments, controlled atmosphere storage, ripening andtransportation on a very wide international range of fruits andvegetables. The new edition of this definitive work, which contains manyfull colour photographs, provides key practical andcommercially-oriented information of great use in helping to ensurethat fruit and vegetables reach the retailer in optimum condition,with the minimum of loss and spoilage. Fruits and vegetables, 2nd edition is essential readingforfruit and vegetable technologists, food scientists and foodtechnologists, agricultural scientists, commercial growers,shippers and warehousing operatives and personnel within packagingcompanies. Researchers and upper level students in food science,food technology, plant and agricultural sciences will find a greatdeal of use within this landmark book. All libraries in researchestablishments and universities where these subjects are studiedand taught should have copies readily available for users. A. K. Thompson was formerly Professor and head of PostharvestTechnology, Silsoe College, UK.