Reproductive Adaptation of Rice to Environmental Stress PDF Download
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Author: Yoji Takeoka
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 248
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Book Description
In rice culture, where seed production is the primary objective, the process of spikelet formation is of major interest. The number and development of spikelets which are differentiated by the panicle directly affect the grain yield. Moreover, the spikelet formation process, especially the stage of differentiation and development of generative cells and the flower-fertilization stage, is the most sensitive to environmental stresses. Subjection to environmental stress at this stage results in severe injuries with consequent reduction in the yield. These stresses include temperature stress, physiological stresses associated with soil, high salinity, flood, drought and fungus infection. The response of the plant differs according to the developmental stage at which it experiences the stress. Thus, an understanding of rice reproductive function and physiology is extremely important to make clear how the morphogenesis of rice spikelets, and especially that of the reproductive organs, takes place, and indeed how it is altered under various stress conditions. Here also, the mode of adaptation of rice plants to environmental stress is discussed, with the conclusion that the plant changes its propagation strategies from sexual reproduction to asexual through vegetative proliferation in order to preserve its descendents. Only a very few studies have been undertaken on sexual organogenesis, sex expression and mode of propogation. Though the information in this book is restricted to the rice plant, this knowledge can be applied to other crops and non-crop plants. It has been written not only for researchers and students in agronomy who are concerned with rice studies and production, but also, for those who are concerned with reproductive physiology and morphogenesis. Many scanning electron microscope pictures and other figures are provided for the sake of clarity and as an aid to the understanding of the reader.
Author: Yoji Takeoka
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 248
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Book Description
In rice culture, where seed production is the primary objective, the process of spikelet formation is of major interest. The number and development of spikelets which are differentiated by the panicle directly affect the grain yield. Moreover, the spikelet formation process, especially the stage of differentiation and development of generative cells and the flower-fertilization stage, is the most sensitive to environmental stresses. Subjection to environmental stress at this stage results in severe injuries with consequent reduction in the yield. These stresses include temperature stress, physiological stresses associated with soil, high salinity, flood, drought and fungus infection. The response of the plant differs according to the developmental stage at which it experiences the stress. Thus, an understanding of rice reproductive function and physiology is extremely important to make clear how the morphogenesis of rice spikelets, and especially that of the reproductive organs, takes place, and indeed how it is altered under various stress conditions. Here also, the mode of adaptation of rice plants to environmental stress is discussed, with the conclusion that the plant changes its propagation strategies from sexual reproduction to asexual through vegetative proliferation in order to preserve its descendents. Only a very few studies have been undertaken on sexual organogenesis, sex expression and mode of propogation. Though the information in this book is restricted to the rice plant, this knowledge can be applied to other crops and non-crop plants. It has been written not only for researchers and students in agronomy who are concerned with rice studies and production, but also, for those who are concerned with reproductive physiology and morphogenesis. Many scanning electron microscope pictures and other figures are provided for the sake of clarity and as an aid to the understanding of the reader.
Author:
Publisher:
ISBN: 9780444416179
Category : Rice
Languages : en
Pages : 226
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Book Description
Author: Mohammad Anwar Hossain
Publisher: John Wiley & Sons
ISBN: 1119633117
Category : Science
Languages : en
Pages : 484
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Book Description
Presents the latest knowledge of improving the stress tolerance, yield, and quality of rice crops One of the most important cereal crops, rice provides food to more than half of the world population. Various abiotic stresses—currently impacting an estimated 60% of crop yields—are projected to increase in severity and frequency due to climate change. In light of the threat of global food grain insecurity, interest in molecular rice breeding has intensified in recent years. Progress has been made, but there remains an urgent need to develop stress-tolerant, bio-fortified rice varieties that provide consistent and high-quality yields under both stress and non-stress conditions. Molecular Breeding for Rice Abiotic Stress Tolerance and Nutritional Quality is the first book to provide comprehensive and up-to-date coverage of this critical topic, containing the physiological, biochemical, and molecular information required to develop effective engineering strategies for enhancing rice yield. Authoritative and in-depth chapters examine the molecular and genetic bases of abiotic stress tolerance, discuss yield and quality improvement of rice, and explore new approaches to better utilize natural resources through modern breeding. Topics Include rice adaptation to climate change, enriching rice yields under low phosphorus and light intensity, increasing iron, zinc, vitamin and antioxidant content, and improving tolerance to salinity, drought, heat, cold, submergence, heavy metals and Ultraviolet-B radiation. This important resource: Contains the latest scientific information on a wide range of topics central to molecular breeding for rice Provides timely coverage molecular breeding for improving abiotic stress tolerance, bioavailability of essential micronutrients, and crop productivity through biotechnological methods Features detailed chapters written by internationally-recognized experts in the field Discusses recent progress and future directions in molecular breeding strategies and research Molecular Breeding for Rice Abiotic Stress Tolerance and Nutritional Quality is required reading for rice researchers, agriculturists, and agribusiness professionals, and the ideal text for instructors and students in molecular plant breeding, abiotic stress tolerance, environmental science, and plant physiology, biochemistry, molecular biology, and biotechnology.
Author: Mirza Hasanuzzaman
Publisher: Woodhead Publishing
ISBN: 0128143339
Category : Business & Economics
Languages : en
Pages : 986
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Book Description
Advances in Rice Research for Abiotic Stress Tolerance provides an important guide to recognizing, assessing and addressing the broad range of environmental factors that can inhibit rice yield. As a staple food for nearly half of the world’s population, and in light of projected population growth, improving and increasing rice yield is imperative. This book presents current research on abiotic stresses including extreme temperature variance, drought, hypoxia, salinity, heavy metal, nutrient deficiency and toxicity stresses. Going further, it identifies a variety of approaches to alleviate the damaging effects and improving the stress tolerance of rice. Advances in Rice Research for Abiotic Stress Tolerance provides an important reference for those ensuring optimal yields from this globally important food crop. Covers aspects of abiotic stress, from research, history, practical field problems faced by rice, and the possible remedies to the adverse effects of abiotic stresses Provides practical insights into a wide range of management and crop improvement practices Presents a valuable, single-volume sourcebook for rice scientists dealing with agronomy, physiology, molecular biology and biotechnology
Author: Nico De Storme
Publisher: Frontiers Media SA
ISBN: 2832545629
Category : Science
Languages : en
Pages : 142
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Book Description
Author: Jauhar Ali
Publisher: Springer Nature
ISBN: 3030665305
Category : Technology & Engineering
Languages : en
Pages : 507
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Book Description
This book is open access under a CC BY 4.0 license. By 2050, human population is expected to reach 9.7 billion. The demand for increased food production needs to be met from ever reducing resources of land, water and other environmental constraints. Rice remains the staple food source for a majority of the global populations, but especially in Asia where ninety percent of rice is grown and consumed. Climate change continues to impose abiotic and biotic stresses that curtail rice quality and yields. Researchers have been challenged to provide innovative solutions to maintain, or even increase, rice production. Amongst them, the ‘green super rice’ breeding strategy has been successful for leading the development and release of multiple abiotic and biotic stress tolerant rice varieties. Recent advances in plant molecular biology and biotechnologies have led to the identification of stress responsive genes and signaling pathways, which open up new paradigms to augment rice productivity. Accordingly, transcription factors, protein kinases and enzymes for generating protective metabolites and proteins all contribute to an intricate network of events that guard and maintain cellular integrity. In addition, various quantitative trait loci associated with elevated stress tolerance have been cloned, resulting in the detection of novel genes for biotic and abiotic stress resistance. Mechanistic understanding of the genetic basis of traits, such as N and P use, is allowing rice researchers to engineer nutrient-efficient rice varieties, which would result in higher yields with lower inputs. Likewise, the research in micronutrients biosynthesis opens doors to genetic engineering of metabolic pathways to enhance micronutrients production. With third generation sequencing techniques on the horizon, exciting progress can be expected to vastly improve molecular markers for gene-trait associations forecast with increasing accuracy. This book emphasizes on the areas of rice science that attempt to overcome the foremost limitations in rice production. Our intention is to highlight research advances in the fields of physiology, molecular breeding and genetics, with a special focus on increasing productivity, improving biotic and abiotic stress tolerance and nutritional quality of rice.
Author: International Rice Research Institute
Publisher: Int. Rice Res. Inst.
ISBN: 9711040786
Category : Crop yields
Languages : en
Pages : 422
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Book Description
Author: Idupulapati Madhusudana Rao
Publisher: Frontiers Media SA
ISBN: 2889665143
Category : Science
Languages : en
Pages : 197
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Book Description
Author: Khalid Rehman Hakeem
Publisher: Springer
ISBN: 3319274554
Category : Science
Languages : en
Pages : 375
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Book Description
The interactions between the plant, soil and microbes are complex in nature. Events may be antagonistic, mutualistic or synergistic, depending upon the types of microorganisms and their association with the plant and soil in question. Multi-trophic tactics can therefore be employed to nourish plants in various habitats and growth conditions. Understanding the mechanisms of these interactions is thus highly desired in order to utilize the knowledge in an ecofriendly and sustainable way. This holistic approach to crop improvement may not only resolve the upcoming food security issues, but also make the environment greener by reducing the chemical inputs. Plant, soil and microbe, Volume 1: Implications in Crop Science, along with the forthcoming Volume 2: Mechanisms and Molecular Interactions, provide detailed accounts of the exquisite and delicate balance between the three critical components of agronomy. Specifically, these two titles focus on the basis of nutrient exchange between the microorganisms and the host plants, the mechanism of disease protection and the recent molecular details emerged from studying this multi-tropic interaction. Together they aim to provide a solid foundation for the students, teachers, and researchers interested in soil microbiology, plant pathology, ecology and agronomy.
Author:
Publisher: IRRI
ISBN: 9712201716
Category : Rice
Languages : en
Pages : 245
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Book Description
