Download or read book Response of Aerobic Rice Genotypes Oryza Sativa L to Irrigation Schedules written by S. Noor Asma and published by . This book was released on 2012 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of New Aerobic Rice Oryza SativaL Genotypes for Yield Traits and Water Use Efiiciency Under Aerobic and Submerged Condtions written by Ahmad Farid Rahmani and published by . This book was released on 2008 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water wise Rice Production written by B. A. M. Bouman and published by Int. Rice Res. Inst.. This book was released on 2002 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drought Resistance in Crops with Emphasis on Rice written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1982 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Productivity of Irrigated Rice oryza Sativa L for a Tropical High Altitude Environment in Rwanda written by Elie Rene Gasore and published by . This book was released on 2016 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield components, grain yield, biomass and plant N accumulation, and N fertilizer responses of irrigated rice (Oryza sativa, L.) were evaluated for a tropical inland valley environment in the high altitudes in Rwanda. Effects were measured for nitrogen (N) fertilizer rate (0, 60, 90,120,150,180 kg N ha-1), season, growth stage and cultivar of different subspecies and plant types during 2012 dry season (DS) and 2013 wet season (WS) at Cyili Rice Research Farm (1380 m above sea level). Variations in irradiance (17.2+/- 0.32 MJ m-2 day-1 in DS and 9.4 +/- 0.66 MJ m-2 day-1in WS) were linked to seasonal differences in biomass and closely related to N responses, yield components and the grain yields which were greater in the DS (9.0 t ha-1) than in the WS (5.3 t ha-1). Total plant N uptake was in the same range (200 to 250 kg N ha-1) for both seasons at maturity. Grain yields were highly correlated (r2 = 0.89) to yield components and mostly with the number of spikelets per panicle (r2 = 0.70) and spikelets per m2 (r2 = 0.80). In most cases, yield components were equivalent or greater to the potential under irrigated lowlands in the tropics of Asia and the highest farm yields (8 to 10 t ha-1) in the temperate. Rice genotypes of Indica x Japonica subspecies combinations were overall greater in yield, harvest index and in important yield components. Crop growth rate (CGR) over seasons and cultivars was 11g m-2 day-1 at maturity. The average total crop duration of 145 days may be considered as the current optimal for achieving the yield potential obtained in the irrigated lowlands of the tropics in Asia. Responses to N fertilizer addition were generally minimal with most measured attributes maximized when the lowest N rate of only 60 kg N ha-1 was applied. This suggested a large contribution from the native soil N reserves linked to ample amounts of total soil N (2.80 +/- 0.34 g kg soil-1). The Indica x Japonica combinations may represent a cultivar improvement strategy for greater adaptation and grain yield and quality in Rwanda.
Download or read book Water Management in Irrigated Rice written by B. A. M. Bouman and published by Int. Rice Res. Inst.. This book was released on 2007 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Seed Quality in Some Elite Genotypes of Aerobic Rice Oryza Sativa L written by C.K. Pramila and published by . This book was released on 2007 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular and Morphological Characterization of Rice Oryza Sativa L Genotypes Under Aerobic and Irrigated Conditions With CD Copy written by Susmita Dey and published by . This book was released on 2020 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Plant and Crop Physiology written by Mohammad Pessarakli and published by CRC Press. This book was released on 2021-07-13 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuous discoveries in plant and crop physiology have resulted in an abundance of new information since the publication of the third edition of the Handbook of Plant and Crop Physiology. Following its predecessors, the fourth edition of this well-regarded handbook offers a unique, comprehensive, and complete collection of topics in the field of plant and crop physiology. Divided into eleven sections, for easy access of information, this edition contains more than 90 percent new material, substantial revisions, and two new sections. The handbook covers the physiology of plant and crop growth and development, cellular and molecular aspects, plant genetics and production processes. The book presents findings on plant and crop growth in response to climatic changes, and considers the potential for plants and crops adaptation, exploring the biotechnological aspects of plant and crop improvement. This content is used to plan, implement, and evaluate strategies for increasing plant growth and crop yield. Readers benefit from numerous tables, figures, case studies and illustrations, as well as thousands of index words, all of which increase the accessibility of the information contained in this important handbook. New to the Edition: Contains 37 new chapters and 13 extensively revised and expanded chapters from the third edition of this book. Includes new or modified sections on soil-plant-water-nutrients-microorganisms physiological relations; and on plant growth regulators, both promoters and inhibitors. Additional new and modified chapters cover the physiological responses of lower plants and vascular plants and crops to metal-based nanoparticles and agrichemicals; and the growth responses of plants and crops to climate change and environmental stresses. With contributions from 95 scientists from 20 countries, this book provides a comprehensive resource for research and for university courses, covering plant and crop physiological responses under normal and stressful conditions ranging from cellular aspects to whole plants.
Download or read book Phenotypic and Gene Expression Analysis of Diverse Rice Genotypes in Response to Drought written by Miranti Rahmaningsih and published by . This book was released on 2016 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drought is one of the most limiting factors for rice (Oryza sativa L.) growth and development with vegetative and reproductive stages the most sensitive and distinct phases. During the vegetative stage, drought can cause reduction in growth and biomass accumulation. Moreover, water stress at reproductive stage can reduce yield significantly. Plants are protected against drought by three different mechanisms: drought avoidance, drought tolerance, and drought escape. An integrated approach combining physiology, breeding, and genomics could be an effective way to characterize and mitigate this problem. The objectives of this research were to (1) screen a diverse set of rice genotypes at both vegetative and reproductive stages for drought response; (2) characterize the genetic differences in mechanisms of drought response conferring drought stress resistance; and (3) study the expression patterns of genes that contribute to yield under water stress conditions. At the vegetative stage, drought was applied by withholding water at 50% of the field capacity for ten days, while in the reproductive stage drought was given at pre-anthesis for three to four days. Results from the first study showed that the diverse genotypes exhibit different drought resistance mechanisms. Padi Tarab Arab and N22 exhibit drought avoidance and tolerance mechanisms while GPNO 25912 exhibits a tolerance mechanism. Gene expression analysis using RNA from plants early after drought stress identified clear differences between resistant and sensitive genotypes. The resistant genotypes showed a high induction in the relative expression of drought stress genes under drought compared to control, while the three sensitive genotypes showed low, no, late, or inconsistent induction in expression. Results from the second study demonstrated that between the two types of samples for gene expression analysis in four different genotypes, the inflorescence gives a higher correlation with phenotypic measurements than the flag leaf during reproductive stage. Meanwhile, both invertase genes and transcription factors confer positive effects to drought resistance particularly in relation to number of grain per panicle and panicle length.
Download or read book Methodologies for Root Drought Studies in Rice written by H. E. Shashidhar and published by Int. Rice Res. Inst.. This book was released on 2012 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rice Improvement written by Jauhar Ali and published by Springer Nature. This book was released on 2021-05-05 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Rice Production Worldwide written by Bhagirath S. Chauhan and published by Springer. This book was released on 2017-02-16 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses aspects of rice production in rice-growing areas of the world including origin, history, role in global food security, cropping systems, management practices, production systems, cultivars, as well as fertilizer and pest management. As one of the three most important grain crops that helps to fulfill food needs all across the globe, rice plays a key role in the current and future food security of the world. Currently, no book covers all aspects of rice production in the rice-growing areas of world. This book fills that gap by highlighting the diverse production and management practices as well as the various rice genotypes in the salient, rice-producing areas in Asia, Europe, Africa, the Americas, and Australia. Further, this text highlights harvesting, threshing, processing, yields and rice products and future research needs. Supplemented with illustrations and tables, this text is essential for students taking courses in agronomy and production systems as well as for agricultural advisers, county agents, extension specialists, and professionals throughout the industry.
Download or read book From Agronomic Data to Farmer Recommendations written by CIMMYT Economics Program and published by CIMMYT. This book was released on 1988 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Rice Crop Science written by Shouichi Yoshida and published by Int. Rice Res. Inst.. This book was released on 1981 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth and development of the rice plant. Climatic environments and its influence. Mineral nutrition of rice. Nutritional disorders. Photosynthesis and respiration. Rice plant characters in relation to yielding ability. Physiological analysis of rice yield.
Download or read book Rice written by Achim Dobermann and published by Int. Rice Res. Inst.. This book was released on 2000 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice ecosystems; Nutrient management; Mineral deficiencies; Mineral toxicities; Tools and information.
