Download or read book The World Wheat Book written by Alain P. Bonjean and published by Intercept Limited. This book was released on 2001-01 with total page 1131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a comprehensive history of wheat across all its main areas of production. New techniques such as in vitro culture now enable the development of a greater level of understanding of the genetics of wheat.
Download or read book Study on Yield Related Traits in Wheat written by Obaidullah Khan and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Need for the improvement in wheat yield is increasing continuously due to day by day increase in human population on the same land. This challenge is much greater in the developing countries than the developed world. Many breeding programs are based on selection of desirable parents for hybridization that's the main source to create genetic variation which is heritable to offspring. This study was carried out to have information on the magnitude of heritability and genetic advance of various important wheat parameters as it plays an important role for planning breeding strategy. For this purpose second filial (F2) generation of ten cross combinations involving seven wheat varieties/genotypes were studied. These were planted in field in a Randomized Complete Block Design with three replications. At maturity 200 plants from each cross and 20 plants from each parent were taken and data were recorded. The information derived will be very helpful to make improvement in wheat yield through reliable selection as it is suggested that varieties/genotypes showing good results should be given due importance in future breeding programs.
Download or read book Wheat written by E H Satorre and published by CRC Press. This book was released on 1999-05-06 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discussing the latest processes involved in researching yield generation, Wheat: Ecology and Physiology of Yield Determination will help you design various types of crop production systems for maximum yield. Featuring information on developing high-yielding, low-input, and quality-oriented systems, this book offers you both physiological and ecological approaches that will help you understand the crop as well as increase its production. Discussing aspects of wheat growth for specific regions around the world, Wheat provides you with information that will improve the size and quality of your crops, including: how temperature, vernalization, and the photoperiod affect the development of wheat using the correct amount of nitrogen fertilizers for wheat crops an explanation of the reproduction and nitrogen cycles of wheat how elements and conditions such as lipids, proteins, nitrogen, and climate enhance grain quality estimating and determining optimal sowing dates examining factors that may affect wheat yield-density relationships, such as planting arrangement and date of sowing preventing seed decay and examining effects of mildews and leaf blights examining historical trends of the crop to see what further research needs to be done You'll also receive information on the genetic gains in wheat research that are improving the physiological traits and numerical components of this essential grain. Within Wheat, you'll find data and methods from international experts in the field that will improve the yield and growth of the world's most important crop.
Download or read book Impacts of International Wheat Breeding Research in the Developing World 1966 1990 written by Derek Byerlee and published by CIMMYT. This book was released on 1993 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bread making quality of wheat written by Bob Belderok and published by Springer Science & Business Media. This book was released on 2000-09-30 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat is the world's most important agricultural commodity. In Europe, where wheat is the main staple, bread wheat (Triticum aestivum) covers the majority of land on which wheat is cropped. Wheat breeders and technologists have contributed greatly to the continued success of bread wheat and its products. The `bread-making quality' of a wheat variety can be described in relation to the processing its kernels must undergo to make a good bread. Bread wheat kernels must be suitable for proper milling into a flour that can produce a dough capable of becoming fine bread. The type of bread varies depending on local bread-making practices. Part I of this book contains a study of the anatomy and chemical composition of wheat kernels, and of the fundamental difference between `soft' and `hard' kernelled varieties. It relates these characteristics to the processes of milling, dough-making and manufacturing of bread, and to biscuit and pasta making. The genetic basis for these characteristics is illustrated, and assay methods for characterizing wheat varieties - ranging from Saunders' chewing test to the most recent developments in glutenin and gliadin research - are evaluated. Part II briefly describes - country by country - how bread-making quality has been integrated into wheat-breeding programmes throughout Europe, and how breeders have attempted to resolve the conflict between yield and quality. It describes how quality wheats `travelled' around the world - from their endogenic source in Eastern Europe to North America, and back again to Europe. This explains how specific genetic material can appear in the pedigrees of varieties grown in a wide range of agro-ecological zones. In addition to giving an interesting historical survey, the book points the way forward for breeders' efforts in the future. Bread-Making Quality updates and interprets knowledge in a way that makes it particularly accessible for food technologists, breeders, students, and teachers.
Download or read book Crop Photosynthesis written by N.R. Baker and published by Elsevier. This book was released on 2013-10-22 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since photosynthetic performance is a fundamental determinant of yield in the vast majority of crops, an understanding of the factors limiting photosynthetic productivity has a crucial role to play in crop improvement programmes. Photosynthesis, unlike the majority of physiological processes in plants, has been the subject of extensive studies at the molecular level for many years. This reductionist approach has resulted in the development of an impressive and detailed understanding of the mechanisms of light capture, energy transduction and carbohydrate biosynthesis, processes that are clearly central to the success of the plant and the productivity of crops. This volume examines in the widest context the factors determining the photosynthetic performance of crops. The emphasis throughout the book is on the setting for photosynthesis rather than the fundamental process itself. The book will prove useful to a wide range of plant scientists, and will encourage a more rapid integration of disciplines in the quest to understand and improve the productivity of crops by the procedures of classical breeding and genetic manipulation.
Download or read book Genetic Architecture of Yield and Yield Related Traits in Wheat written by Hafiz Ghulam Muhu-Din Ahmed and published by LAP Lambert Academic Publishing. This book was released on 2015-04-02 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield is economically most important and most complex polygenic trait. To meet the today's challenges new genotypes of wheat are being evaluated by continued genetic recombination. Efforts to improve wheat plant have been made at various plant characters. Yield component breeding and modification of the plant architecture offer possibilities to develop more efficient breeding systems for increased grain yield.Therefore, the present studies were designed the genetic behavior of some polygenic (Morpho-physiological) characters of spring wheat were brought under consideration in order to determine the Gene action involved in their inheritance. Information so derived would be efficiently exploited to design suitable strategies for sustained genetic improvement of this essential food crop.
Download or read book The Barley Genome written by Nils Stein and published by Springer. This book was released on 2018-08-18 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of the state-of-the-art in barley genome analysis, covering all aspects of sequencing the genome and translating this important information into new knowledge in basic and applied crop plant biology and new tools for research and crop improvement. Unlimited access to a high-quality reference sequence is removing one of the major constraints in basic and applied research. This book summarizes the advanced knowledge of the composition of the barley genome, its genes and the much larger non-coding part of the genome, and how this information facilitates studying the specific characteristics of barley. One of the oldest domesticated crops, barley is the small grain cereal species that is best adapted to the highest altitudes and latitudes, and it exhibits the greatest tolerance to most abiotic stresses. With comprehensive access to the genome sequence, barley’s importance as a genetic model in comparative studies on crop species like wheat, rye, oats and even rice is likely to increase.
Download or read book Physiological Breeding written by Alistair Pask and published by CIMMYT. This book was released on 2012 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Trait Loci Mapping of Yield Its Related Traits and Spike Morphology Factors in Winter Wheat Triticum Aestivum L written by Robert Christopher Gaynor and published by . This book was released on 2011 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing grain yield in wheat (Triticum aestivum L.) is a challenging task, because yield is a complex trait controlled by many genes and highly influenced by environmental factors. The genetic control of yield components and other traits associated with yield may be less complex and thus more manageable for breeding. This study seeks to identify quantitative trait loci (QTLs) for these traits. Two new genetic linkage maps were constructed from recombinant inbred lines (RILs) derived from crosses between the Oregon soft white winter wheat variety Tubbs and a Western European hard red winter wheat variety, Einstein. A third linkage map was constructed from RILs from a cross with Tubbs and a Western European experimental hard red winter wheat line. A combination of Diversity Arrays Technology (DArT), Simple Sequence Repeat (SSR), orw5, and B1 markers were used to construct genetic linkage maps. Two replications of the RIL populations were grown in yield trial sized plots at Corvallis, OR and Pendleton, OR in 2009. The RILs were evaluated for grain yield, spikes per m2, fertile spikelets per spike, sterile spikelets per spike, seeds per spike, seeds per fertile spikelet, average seed weight, growing degree days (GDD) to flowering, GDD to physiological maturity, GDD of grain fill, plant height, test weight, and percent grain protein. Composite interval mapping (CIM) detected 146 QTLs for these traits spread across all chromosomes except for 6D. Thirty six percent of all of the QTLs detected were in close proximity to four loci: Rht-B1, Rht-D1, B1, and Xgwm372. The use of factor analysis to aid in QTL mapping for correlated traits related to spike morphology was explored. Quantitative trait loci mapping of factor scores for these traits potentially showed an increase in statistical power to detect QTLs and a decrease in the probability of type I error over mapping the traits individually.
Download or read book Combining Ability Analysis written by Sobia Ijaz and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat is an important cereal crop throughout the world and also in Pakistan. A lot of research work is going on to develop high yielding wheat varieties.Line×tester analysis is one of efficient breeding strategies to evaluate combining ability effects of genotypes and also to provide information regarding genetic mechanisms controlling yield and yield related traits.Combining ability analysis would be of great help to identify the most suitable and desirable parental material to breed further to get the hybrids which have the desirable characters for the breeders.The line x tester cross experiment in spring wheat (Triticum aestivum L.) was used to estimate the combining ability effects involved in the control and expression of some polygenic traits of economic importance.This book provide information regarding wheat and its yield related traits to improve the yield.
Download or read book Yield gap analysis of field crops written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-06-29 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: To feed a world population that will exceed 9 billion by 2050 requires an estimated 60% increase over current primary agricultural productivity. Closing the common and often large gap between actual and attainable crop yield is critical to achieve this goal. To close yield gaps in both small and large scale cropping systems worldwide we need (1) definitions and techniques to measure and model yield at different levels (actual, attainable, potential) and different scales in space (field, farm, region, global) and time (short and long term); (2) identification of the causes of gaps between yield levels; (3) management options to reduce the gaps where feasible and (4) policies to favour adoption of sustainable gap-closing solutions. The aim of this publication is to critically review the methods for yield gap analysis, hence addressing primarily the first of these four requirements, reporting a wide-ranging and well-referenced analysis of literature on current methods to assess productivity of crops and cropping systems.
Download or read book GGE Biplot Analysis written by Weikai Yan and published by CRC Press. This book was released on 2002-08-28 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research data is expensive and precious, yet it is seldom fully utilized due to our ability of comprehension. Graphical display is desirable, if not absolutely necessary, for fully understanding large data sets with complex interconnectedness and interactions. The newly developed GGE biplot methodology is a superior approach to the graphical analys
Download or read book International Symposium on Wheat Yield Potential written by Reynolds, M.P. and published by CIMMYT. This book was released on 2008 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tef Eragrostis Tef Zucc written by Seyfu Ketema and published by Bioversity International. This book was released on 1997 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiological breeding I interdisciplinary approaches to improve crop adaptation written by and published by CIMMYT. This book was released on with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biometrical genetics written by Kenneth Mather and published by Springer. This book was released on 2013-11-11 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of continuous variation are basic to the theory of evolution and to the practice of plant and animal improvement. Yet the genetical study of continuous variation has lagged far behind that of discontinuous variation. The reason for this situation is basically methodological. Mendel gave us not merely his principles of heredity, but also a method of experiment by which these principles could be tested over a wider range of living species, and extended into the elaborate genetical theory of today. The power of this tool is well attested by the speed with which genetics has grown. In less than fifty years, it has not only developed a theoretical structure which is unique in the biological sciences, but has established a union with nuclear cytology so close that the two have become virtually a single science offering us a new approach to problems so diverse as those of evolution, development, disease, cellular chemistry and human welfare. Much of this progress would have been impossible and all would have been slower without the Mendelian method of recognizing and using unit differences in the genetic materials.
