Download or read book A Comparison in Maize of Inbred Lines and First Generation Crosses Between Them written by Louis Robert Jorgenson and published by . This book was released on 1927 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Performance of Reciprocal Test crosses Between Inbred Lines and a Single cross Hybrid in Maize written by J. C. Wells and published by . This book was released on 1950 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Bulletin written by and published by . This book was released on 1927 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Agricultural Research written by and published by . This book was released on 1942 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the American Society of Agronomy written by American Society of Agronomy and published by . This book was released on 1927 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt: An international journal of agriculture and natural resource sciences.
Download or read book Quantitative Genetics in Maize Breeding written by Arnel R. Hallauer and published by Springer Science & Business Media. This book was released on 2010-09-28 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize is used in an endless list of products that are directly or indirectly related to human nutrition and food security. Maize is grown in producer farms, farmers depend on genetically improved cultivars, and maize breeders develop improved maize cultivars for farmers. Nikolai I. Vavilov defined plant breeding as plant evolution directed by man. Among crops, maize is one of the most successful examples for breeder-directed evolution. Maize is a cross-pollinated species with unique and separate male and female organs allowing techniques from both self and cross-pollinated crops to be utilized. As a consequence, a diverse set of breeding methods can be utilized for the development of various maize cultivar types for all economic conditions (e.g., improved populations, inbred lines, and their hybrids for different types of markets). Maize breeding is the science of maize cultivar development. Public investment in maize breeding from 1865 to 1996 was $3 billion (Crosbie et al., 2004) and the return on investment was $260 billion as a consequence of applied maize breeding, even without full understanding of the genetic basis of heterosis. The principles of quantitative genetics have been successfully applied by maize breeders worldwide to adapt and improve germplasm sources of cultivars for very simple traits (e.g. maize flowering) and very complex ones (e.g., grain yield). For instance, genomic efforts have isolated early-maturing genes and QTL for potential MAS but very simple and low cost phenotypic efforts have caused significant and fast genetic progress across genotypes moving elite tropical and late temperate maize northward with minimal investment. Quantitative genetics has allowed the integration of pre-breeding with cultivar development by characterizing populations genetically, adapting them to places never thought of (e.g., tropical to short-seasons), improving them by all sorts of intra- and inter-population recurrent selection methods, extracting lines with more probability of success, and exploiting inbreeding and heterosis. Quantitative genetics in maize breeding has improved the odds of developing outstanding maize cultivars from genetically broad based improved populations such as B73. The inbred-hybrid concept in maize was a public sector invention 100 years ago and it is still considered one of the greatest achievements in plant breeding. Maize hybrids grown by farmers today are still produced following this methodology and there is still no limit to genetic improvement when most genes are targeted in the breeding process. Heterotic effects are unique for each hybrid and exotic genetic materials (e.g., tropical, early maturing) carry useful alleles for complex traits not present in the B73 genome just sequenced while increasing the genetic diversity of U.S. hybrids. Breeding programs based on classical quantitative genetics and selection methods will be the basis for proving theoretical approaches on breeding plans based on molecular markers. Mating designs still offer large sample sizes when compared to QTL approaches and there is still a need to successful integration of these methods. There is a need to increase the genetic diversity of maize hybrids available in the market (e.g., there is a need to increase the number of early maturing testers in the northern U.S.). Public programs can still develop new and genetically diverse products not available in industry. However, public U.S. maize breeding programs have either been discontinued or are eroding because of decreasing state and federal funding toward basic science. Future significant genetic gains in maize are dependent on the incorporation of useful and unique genetic diversity not available in industry (e.g., NDSU EarlyGEM lines). The integration of pre-breeding methods with cultivar development should enhance future breeding efforts to maintain active public breeding programs not only adapting and improving genetically broad-based germplasm but also developing unique products and training the next generation of maize breeders producing research dissertations directly linked to breeding programs. This is especially important in areas where commercial hybrids are not locally bred. More than ever public and private institutions are encouraged to cooperate in order to share breeding rights, research goals, winter nurseries, managed stress environments, and latest technology for the benefit of producing the best possible hybrids for farmers with the least cost. We have the opportunity to link both classical and modern technology for the benefit of breeding in close cooperation with industry without the need for investing in academic labs and time (e.g., industry labs take a week vs months/years in academic labs for the same work). This volume, as part of the Handbook of Plant Breeding series, aims to increase awareness of the relative value and impact of maize breeding for food, feed, and fuel security. Without breeding programs continuously developing improved germplasm, no technology can develop improved cultivars. Quantitative Genetics in Maize Breeding presents principles and data that can be applied to maximize genetic improvement of germplasm and develop superior genotypes in different crops. The topics included should be of interest of graduate students and breeders conducting research not only on breeding and selection methods but also developing pure lines and hybrid cultivars in crop species. This volume is a unique and permanent contribution to breeders, geneticists, students, policy makers, and land-grant institutions still promoting quality research in applied plant breeding as opposed to promoting grant monies and indirect costs at any short-term cost. The book is dedicated to those who envision the development of the next generation of cultivars with less need of water and inputs, with better nutrition; and with higher percentages of exotic germplasm as well as those that pursue independent research goals before searching for funding. Scientists are encouraged to use all possible breeding methodologies available (e.g., transgenics, classical breeding, MAS, and all possible combinations could be used with specific sound long and short-term goals on mind) once germplasm is chosen making wise decisions with proven and scientifically sound technologies for assisting current breeding efforts depending on the particular trait under selection. Arnel R. Hallauer is C. F. Curtiss Distinguished Professor in Agriculture (Emeritus) at Iowa State University (ISU). Dr. Hallauer has led maize-breeding research for mid-season maturity at ISU since 1958. His work has had a worldwide impact on plant-breeding programs, industry, and students and was named a member of the National Academy of Sciences. Hallauer is a native of Kansas, USA. José B. Miranda Filho is full-professor in the Department of Genetics, Escola Superior de Agricultura Luiz de Queiroz - University of São Paulo located at Piracicaba, Brazil. His research interests have emphasized development of quantitative genetic theory and its application to maize breeding. Miranda Filho is native of Pirassununga, São Paulo, Brazil. M.J. Carena is professor of plant sciences at North Dakota State University (NDSU). Dr. Carena has led maize-breeding research for short-season maturity at NDSU since 1999. This program is currently one the of the few public U.S. programs left integrating pre-breeding with cultivar development and training in applied maize breeding. He teaches Quantitative Genetics and Crop Breeding Techniques at NDSU. Carena is a native of Buenos Aires, Argentina. http://www.ag.ndsu.nodak.edu/plantsci/faculty/Carena.htm
Download or read book Tropical Maize written by R. L. Paliwal and published by Fao. This book was released on 2000 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize is an important crop and the demand for as both food and animal feed is expected to grow by 235 million tonnes between now and 2030. In many countries it will be difficult to increase the area under cultivation, so gains will have to come from increased productivity and intensification of the cropping system. This book looks at all aspects of tropical maize production from physiology, growing environments, pest and diseases, plant breeding and crop management and it is a substantial information resource necessary for the development of the crop.
Download or read book A Study of the Performance of Inbred Line Crosses in the Domestic Fowl written by William Alexander Johnson and published by . This book was released on 1952 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experiment Station Record written by United States. Office of Experiment Stations and published by . This book was released on 1928 with total page 1068 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of the Performance of Corn Inbreds Per Se with Their Performance in Test cross Combination written by George Miloslav Kozelnicky and published by . This book was released on 1951 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maiz written by and published by Bib. Orton IICA / CATIE. This book was released on with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by Puerto Rico. Federal experiment station, Mayaguez and published by . This book was released on 1920 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution of Organic Matter Reserve in a Desert Shrub Community written by Ralph C. Holmgren and published by . This book was released on 1972 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a community of widely spaced perennials, mostly shrubs, in the cold desert of western Utah, total accumulated organic mass (excluding the small amount of humus) is about 1,770g./m.2. Of this total, 240 g. are above the ground and 1,530 g. below. Of the latter, 295 g. is underground litter. About half of the 1,235 g. of roots are in the surface 30 cm. of the soil, about 0.3 of them in the second 30 cm., 0.15 in the third, 0.03 in the fourth, and 0.01 of them occur below 120 cm. to about 135 cm. Coarce roots (> 2 mm. in diameter) are found only in the immediate vicinity of plants and are unimportant below the 15-cm. depth. Fine (
Download or read book USDA Forest Service Research Paper INT written by and published by . This book was released on 1973 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Failure Conditions in Infinite Slopes and the Resulting Soil Pressures written by William S. Hartsog and published by . This book was released on 1974 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genomics of Cultivated Palms written by V Arunachalam and published by Elsevier. This book was released on 2011-12-12 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioinformatics offers novel tools and resources to analyze plant genomes and genes. The complete genomes of two important commercial palms (dates and oil palm) have recently been sequenced. This offers scope for many computational tools to decipher the synteny, collinearity and common and unique genes of palms. This book reviews the latest developments in this field. Includes the latest information on the molecular breeding and bioinformatics of palms Covers past and current work and future opportunities Written in simple language avoiding technical jargon
Download or read book Evolution and the Genetics of Populations Volume 3 written by Sewall Wright and published by University of Chicago Press. This book was released on 1984-06-15 with total page 619 pages. Available in PDF, EPUB and Kindle. Book excerpt: These volumes discuss evolutionary biology through the lense of population genetics.
