Download or read book Heterosis and Combining Ability Effects in Sorghum written by Alka Swami and published by LAP Lambert Academic Publishing. This book was released on 2012-08 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum is one among the five major cereals of the world, being grown extensively in tropical and subtropical environments. It is the staple food crop for a large section of people and also serves as a main source of fodder, feed and industrial raw material.The present investigation is designed to study the combining ability and heterotic pattern of 8 agronomically superior and 3 drought tolerant testers.

Download or read book Evaluation of Lines from the Sorghum Conversion Program for Combining Ability Heterosis and Genetic Effects in Single cross and Three way Hybrids written by Paisan Laosuwan and published by . This book was released on 1975 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Combining Ability and Heterosis Studies for Adaptation in Newly Developed Male and Female Inbreds of Sorghum Sorghum Bicolor L Moench written by German Jose Perez and published by . This book was released on 1985 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Heterosis Combining Ability and Gxe Interactions in Sweet Sorghum written by Chapara Rani and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining ability analysis revealed predominance of non-additive gene action for days to 50 per cent flowering, days to maturity, plant height, brix per cent, total soluble solids, total sugar index, juice yield, juice extraction per cent and grain yield. Therefore heterosis breeding is suggested for these traits whereas additive gene action is important for total biomass, fresh stalk yield and ethanol yield hence, simple selection would be effective for these traits. Among the parents, RS 1220B, CSV 19SS and SSV 74 were found to be good general combiners, while the cross combinations viz., NSS 1007A x CSV 19SS and NSS 1016A x SSV 84 showed good specific combining ability coupled with high per se performance for ethanol yield. Hence, highly suitable for heterosis breeding. Based on stability, the hybrids viz., NSS 8A x SSV 84 and NSS 1007A x CSV 19SS for ethanol yield, juice yield and total biomass were found to be stable with well adaptation to all environments."

Download or read book Heterosis and Combining Ability Studies in Grain Sorghum written by V. V. Kulkarni and published by . This book was released on 1991 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selection for Heterosis and Combining Ability in Grain Sorghum Sorghum Bicolor L Moench written by S. P. Mishra and published by . This book was released on 1978 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability in Grain Sorghum Sorghum Vulgare Pers written by D. L. Singhania and published by . This book was released on 1968 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability Studies for Forage Traits in Sorghum Sorghum Bicolor L Moench from Line X Tester Analysis written by Jadhav A S. and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability Studies in Grain Sorghum Sorghum Bicolor L Moench written by Harer P N. and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability in Sorghum written by C. V. Jadhav and published by . This book was released on 2002 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetical Studies on Heterosis and Combining Ability in Forage Sorghum written by Om Parkash Dangi and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis Combining Ability and Breeding Potential Studies for Grain Yield and Yield Components in Guinea Sorghums Sorghum Bicolor L Moench written by Aboubacar Toure and published by . This book was released on 1992 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability Studies in Grain Sorghum Sorghum Biocolor L Moench written by Amsalu A. A. and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability Analysis for Fodder Yield and Quality Traits in Sorghum Sorghum Bicolor L Moench written by Khazan Singh Boora and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability Studies in Sorghum Sorghum Bicolor L Moench written by LOKAPUR RAVINDRA G and published by . This book was released on 1997 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heterosis and Combining Ability Studies in Grain Sorghum from Line Tester Analysis written by N J. Gaikwad and published by . This book was released on 1993 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: