Download or read book Studies on the Relative Performance of Double Cross Maize Hybrids with Special Reference to Hybrid X Location Interaction written by G. B. Pradhan and published by . This book was released on 1962 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Scientific Report written by Indian Agricultural Research Institute and published by . This book was released on 1962 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Scientific Report written by Indian Agricultural Research Institute, Delhi and published by . This book was released on 1963 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Theses Submitted for Associateship of I A R I and M Sc and Ph D Degrees of the I A R I Post Graduate School 1938 1969 written by Indian Agricultural Research Institute, Delhi and published by . This book was released on 1970 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General and Specific Combining Ability of Eight Maize Inbred Lines Part I II Comparative Performance of Single Double and Synthetic Hybrids written by Devender Kumar Nanda and published by . This book was released on 1964 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Diversity and Its Use in Determining the Relationship of Double cross Maize Hybrids written by Antonio Garza and published by . This book was released on 1960 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Genetics and Cytology written by and published by . This book was released on 1976 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Comparison of Predicted and Actual Performance of Dwarf and Dwarf X Tall Double Cross Hybrids in Maize Zea Mays L written by I. Swarnalatha Devi and published by . This book was released on 1990 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genotype X Environment Interaction Yield Stability and Adaption Responses of 25 Single cross Maize Zea Mays L Hybrids Grown in Michigan written by Kingstone Mashingaidze and published by . This book was released on 1987 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods of Predicting Agronomic Charcters in Double Cross Maize Hybrids written by Leonard Casper Hoegemeyer and published by . This book was released on 1939 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Bibliography of Agriculture written by and published by . This book was released on 1970 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maize Dwarf Mosaic Virus written by R. W. Toler and published by . This book was released on 1982 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five Texas corn double crosses, the single-cross parents, and the inbreds used to make the single crosses were studied for their reaction to inoculation of maize dwarf mosaic virus strain A (MDMV). Characteristics studied included: days to silk, plant height, ear height, disease ratings, yield, shelling percent and test weights. Significant differences occurred between inoculated diseased vs. uninoculated healthy single crosses and double-cross hybrids due to the effects do suceptible inbred lines. No significant differences occured with the crosses among the resistant lines. MDMV caused differences among hybrids entries for each characteristic considered. All entries generally showed the same disease symptoms, to different degrees. Maize dwarf mosaic virus delayed maturity, reduced plant and ear heights, and reduced yields. There was on effect on shelling pecent, test weights, ear length, or seed set. When three susceptible inbred lines were in a double-cross hybrid, MDMV significantly affected the performance of the hybrid.
Download or read book Relationship Between Inbred and Hybrid Performance in Maize written by Elto Eugenio Gomes e Gama and published by . This book was released on 1976 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the study will be to determine there is a consistent relation between line performance and hybrid performance for different plant and ear traits. Correlats on studies vetween inbred lines and their hybrids will be made by use data for arandom unselected group of unbred lines development from Iowa Stiff Stalk Synthetic (BSSS), and the single-cross hybrids produced among the inbred lines.
Download or read book Agronomy Journal written by and published by . This book was released on 1949 with total page 668 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
