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Comparative Assessment Of Commercial Grain Yield And Seed Production Potential Of Single Cross Hybrids Sch And Modified Single Cross Hybrids Msch In Maize Zea Mays L
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Book Synopsis Comparative Assessment of Commercial Grain Yield and Seed Production Potential of Single Cross Hybrids (SCH) and Modified Single Cross Hybrids (MSCH) in Maize (Zea Mays L.) by : Thottempudi Kavya
Download or read book Comparative Assessment of Commercial Grain Yield and Seed Production Potential of Single Cross Hybrids (SCH) and Modified Single Cross Hybrids (MSCH) in Maize (Zea Mays L.) written by Thottempudi Kavya and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stability Analysis of Single-cross Hybrids of Maize (Zea Mays L.) Produced from Selected and Unselected Inbred Lines by : Elto Eugenio Gomes e Gama
Download or read book Stability Analysis of Single-cross Hybrids of Maize (Zea Mays L.) Produced from Selected and Unselected Inbred Lines written by Elto Eugenio Gomes e Gama and published by . This book was released on 1978 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estabilidade de desempenho de producao e uma caracteristica desejavel em hibridos de milho (Zea mays L). Muitos metodos tem sido propostos e usados para medir a estabilidade da producao em estudos aplicados. O objetivo do estudo foi determinar a producao relativa de graos e estabilidade de producao de graos entre grupos de simples cruzamento de hibrido de milho produzidos de linhas congenitas selecionadas de milho. O metodo usado foi o de Eberhart e Russel para desempenhar a analise de estabiliade de variancia e parametros da estabilidade calculada.
Book Synopsis Effect of First Generation Hybrids Upon Yields of Corn by : Lawrence Root Waldron
Download or read book Effect of First Generation Hybrids Upon Yields of Corn written by Lawrence Root Waldron and published by . This book was released on 1924 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multi-Location Evaluation of Agronomic Traits in Maize Hybrids by : Michael Cody McKee
Download or read book Multi-Location Evaluation of Agronomic Traits in Maize Hybrids written by Michael Cody McKee and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize (Zea mays L.) is one of the main crops grown in the United States. Genetic improvement over the last century has seen a shift from using open-pollinated varieties to single cross hybrids. This has resulted in major grain yield gains and improved management methodologies. However, there is still concern about reduced genetic diversity in elite corn germplasm and the potential effects this could have on future maize productivity in the presence of numerous abiotic and biotic pressures. One solution to this issue is the incorporation of exotic germplasm into existing maize improvement programs. This exotic material must be evaluated and characterized because too much or poorly matched exotic material can lead to reduced productivity. The use of multiple environments representative to the target improvement area is the best way to determine the true potential of certain material. The objectives of this research were to: i) estimate the responses of hybrids to aflatoxin and their agronomic performance across a range of environments under inoculation with Aspergillus flavus; ii) identify the hybrids within each group that exhibit the lowest levels of contamination; iii) analyze the relationship between agronomic performance and aflatoxin accumulation; and iv) determine how Genotype x Environment interactions affect these traits. Agronomic data was collected in ten Texas environments in 2005 for hybrids created from yellow, white, and Quality Protein Maize material that was crossed with one of two elite temperate inbred testers, LH195 or LH210. Response to aflatoxin was measured in eight of these environments. U.S. commercial hybrids were used as checks. Significant differences between hybrids were observed at different environments for different traits. Overall the experimental hybrids had lower aflatoxin accumulation than the commercial checks. They also yielded lower and had lower test weights and 1000 kernel weights. However, there were some hybrids that were competitive with the commercial checks for these agronomic traits. The incorporation of this material into established U.S. lines could be beneficial with regards to aflatoxin accumulation and kernel quality, which could ultimately translate to higher yields and crop quality. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/148414
Book Synopsis Comparison of the Performance of Reciprocal Test-crosses Between Inbred Lines and a Single-cross Hybrid in Maize by : J. C. Wells
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:
Book Synopsis Investigation on Seed Production Technology for Single Cross Maize Hybrids (Zea Mays L.) (NAH-2049 and NAH-1137) by : M.S. Shashibhaskar
Download or read book Investigation on Seed Production Technology for Single Cross Maize Hybrids (Zea Mays L.) (NAH-2049 and NAH-1137) written by M.S. Shashibhaskar and published by . This book was released on 2015 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Conventional, Modified Single Seed Descent, and Doubled Haploid Breeding Methods for Maize Inbred Line Development Using GEM Breeding Crosses by : McDonald Bright Jumbo
Download or read book Comparison of Conventional, Modified Single Seed Descent, and Doubled Haploid Breeding Methods for Maize Inbred Line Development Using GEM Breeding Crosses written by McDonald Bright Jumbo and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Choice of germplasm combined with use of efficient breeding methods and careful evaluation are essential tools for maize inbred line and hybrid development. Breeding crosses from the G ermplasm E nhancement of M aize (GEM) project (www.public.iastate.edu/~usda-gem) between exotic accessions and elite Corn Belt inbreds provide a unique opportunity for broadening US Corn Belt Maize germplasm by selecting exotic alleles in an elite genetic background. Progress in GEM could be enhanced by identifying more efficient procedures for both developing inbreds and determining which of the several hundred GEM breeding crosses have the most potential for future improvement and gene discovery. The primary research objective was to compare four breeding methods for their effectiveness and efficiency for developing superior maize inbred lines and hybrids from GEM breeding crosses. In addition, the study also aimed at identifying breeding methods that could be useful for prioritizing GEM breeding crosses for further line development and trait identification. Furthermore, breeding methods were compared to determine the effectiveness of mass selection for producing more adapted genotypes from GEM breeding crosses. Four breeding methods; Conventional GEM (CG), Conventional Mass (CM), Modified Single Seed Descent (MSSD) and Doubled Haploid (DH) were compared using three GEM breeding crosses ANTIG01:N16DE4, AR16035:S0209, and DKXL212:S0943b. Results showed that more DH lines were recovered from the non-stiff stalk than from the stiff stalk breeding crosses in the DH method due to differences in chromosome doubling rather than the induction phase. Field observations showed more uniformity in the MSSD S 2 lines derived from the Stiff Stalk than the non-Stiff Stalk (ANTIG01:N16DE4) breeding cross. The testcross evaluations generally showed no method effects between breeding methods, but method effects were present in the per se agronomic evaluations. The MSSD and CM methods had a higher proportion of top five lines in the second year testcross evaluations (about one third each) based on both yield and yield/moisture performance compared to the CG and DH methods. Hybrids from MSSD lines tended to have higher grain moisture than hybrids from the CG, CM and DH methods, but MSSD hybrids with high yield/moisture could be selected. The MSSD method may be an effective and efficient alternative to both pedigree and DH methods for developing high performing lines from the GEM breeding crosses.
Book Synopsis Genotype X Environment Interaction, Yield Stability and Adaption Responses of 25 Single-cross Maize (Zea Mays L.) Hybrids Grown in Michigan by : Kingstone Mashingaidze
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:
Book Synopsis Improving Maize Inbred Line Selection to Develop High Yielding and Stable Single Cross Hybrids Using Plant Density as a Selection Criterion by : J. Arahon Hernandez-Guzman
Download or read book Improving Maize Inbred Line Selection to Develop High Yielding and Stable Single Cross Hybrids Using Plant Density as a Selection Criterion written by J. Arahon Hernandez-Guzman and published by . This book was released on 2007 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Innovative Practices to Enhance Seed Yield and Quality of Single Cross Hybrid Maize (Zea Mays L.) NAH - 2049 [Nithyashree]" by : D.B. Jithendra
Download or read book Innovative Practices to Enhance Seed Yield and Quality of Single Cross Hybrid Maize (Zea Mays L.) NAH - 2049 [Nithyashree]" written by D.B. Jithendra and published by . This book was released on 2012 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Single Cross Hybrid Seed Production Technology in Maize by : V. K. Yadav
Download or read book Single Cross Hybrid Seed Production Technology in Maize written by V. K. Yadav and published by . This book was released on 2011 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General and Specific Combining Ability of Eight Maize Inbred Lines [Part I]; II. Comparative Performance of Single, Double and Synthetic Hybrids by : Devender Kumar Nanda
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:
Book Synopsis Resource Allocation and Genomic Prediction in Maize (Zea Mays L.) Hybrid Breeding and a Genetic Analysis of Pericarp Pigmentation by : Dylan Schoemaker
Download or read book Resource Allocation and Genomic Prediction in Maize (Zea Mays L.) Hybrid Breeding and a Genetic Analysis of Pericarp Pigmentation written by Dylan Schoemaker and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize (Zea mays L.) is a globally important crop species sold as a hybrid and is a model system for both genetics and plant breeding research. The maize breeding process involves identification of new inbred lines, followed by the identification and production of commercial hybrids from crosses of inbreds. Genomic selection and evaluation of hybrid phenotypes are important components of this process. In this dissertation, I use a large multi-environment trial dataset to explore the impact of resource allocation when developing genomic prediction models. Resource-efficient training sets can be developed using three to five environments and a single tester to predict both plant height and grain yield. A second study in my dissertation focused on prediction of hybrid combinations and the importance of general and specific combining ability in identifying new hybrids. The results demonstrated that hybrids with the greatest grain yield result from parents with a high general combining ability, but hybrids with the greatest performance may not have the largest specific combining ability deviation. Therefore, modeling only additive genetic relationships can lead to an accurate genomic prediction model during early-stage testing in a hybrid maize breeding program. The third study in my dissertation was a genetic analysis of pericarp pigmentation in progenies of commercial dent germplasm. Allelic variation at the well-studied pericarp color1 (P1) locus was significantly associated with pericarp pigmentation. The results from these projects provide novel insight into the design of hybrid breeding programs and the allocation of resources when implementing genomic selection. The research also provides candidate genes for geneticists or maize breeders to aid in the development of inbred lines with novel pericarp hues and elite agronomic characteristics.
Book Synopsis Development and Spread of Improved Maize Varieties and Hybrids in Developing Countries by : David Harry Timothy
Download or read book Development and Spread of Improved Maize Varieties and Hybrids in Developing Countries written by David Harry Timothy and published by . This book was released on 1988 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Hybrid, Plant Type, Seed Quality, Row Direction, Plant Population and Planting Date on Competition Effects in Field Corn (Zea Mays L.) Including a Study of Hybrid Mixtures by : Cyril Reed Funk
Download or read book Influence of Hybrid, Plant Type, Seed Quality, Row Direction, Plant Population and Planting Date on Competition Effects in Field Corn (Zea Mays L.) Including a Study of Hybrid Mixtures written by Cyril Reed Funk and published by . This book was released on 1961 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stability Analysis of Single-cross Hybrids of Maize (Zea Mays L.) by : Jean Barbara Cormack
Download or read book Stability Analysis of Single-cross Hybrids of Maize (Zea Mays L.) written by Jean Barbara Cormack and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield data from three experiments of maize single cross trials grown at 5 to 8 locations in 1994, 1995, and 1996 were analyzed for stability using regression methods. Only single crosses grown in all locations and years (environments) were included in the analyses. Effects for environments, genotypes, genotype x environment, heterogeneity of regression (slopes), and deviations from regression were tested for significance. Slopes and deviation from regression were calculated for each single cross and slopes were tested for equality to 0.0 and 1.0. Slopes sums of squares were subdivided into sums of squares due to concurrence and non-concurrence. Subsets of each experiment were also analyzed to examine whether stability changed in environments stratified by mean yield levels or by years. The analysis of one experiment revealed significant differences among single cross slopes and non-concurrence. The other two experiments were unusual in that the tests for heterogeneity of slopes were not significant.
Book Synopsis The Effect of Inbred Yield Component Modification on the Stability of Single Cross Maize Hybrids by : Ronald Scott Ferriss
Download or read book The Effect of Inbred Yield Component Modification on the Stability of Single Cross Maize Hybrids written by Ronald Scott Ferriss and published by . This book was released on 1978 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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