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Study On The Comparative Performance Of Various Hybrids And Composites For Yield And Other Agronomic Traits In Maize
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Book Synopsis Study on the Comparative Performance of Various Hybrids and Composites for Yield and Other Agronomic Traits in Maize by : Shyam Sunder Pal
Download or read book Study on the Comparative Performance of Various Hybrids and Composites for Yield and Other Agronomic Traits in Maize written by Shyam Sunder Pal and published by . This book was released on 1969 with total page 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 Agronomic performance of open pollinated and hybrid maize varieties: Results from on-farm trials in northern Ghana by : Van Asselt, Joanna
Download or read book Agronomic performance of open pollinated and hybrid maize varieties: Results from on-farm trials in northern Ghana written by Van Asselt, Joanna and published by Intl Food Policy Res Inst. This book was released on 2018-02-07 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize is an important staple crop in Ghana, but maize productivity is low. Other countries with similar agroecological conditions have increased maize productivity by increasing the use of maize hybrids. This paper presents the results of maize trials in northern Ghana, in which hybrids were tested to see if they performed significantly better than the varieties planted by farmers. This paper details the procedures of the maize trials and presents descriptive statistics of the trial results. The trials demonstrated that two foreign hybrids performed consistently better than Obaatanpa, the most widely used variety in the north. The foreign hybrids performed consistently well in all districts and appear to be well-suited for planting in northern Ghana.
Book Synopsis Assessment of the Performance of Maize Genotypes for Yield and Other Agronomic Traits by : Aminu Kurawa Ibrahim
Download or read book Assessment of the Performance of Maize Genotypes for Yield and Other Agronomic Traits written by Aminu Kurawa Ibrahim and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Asian Regional Maize Workshop, 10. Maize for Asia - Emerging Trends and; Technologies. Proceedings of The Asian Regional Maize Workshop; Makassar, Indonesia; 20-23 October, 2008 by :
Download or read book Asian Regional Maize Workshop, 10. Maize for Asia - Emerging Trends and; Technologies. Proceedings of The Asian Regional Maize Workshop; Makassar, Indonesia; 20-23 October, 2008 written by and published by CIMMYT. This book was released on with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the International Congress of Plant Physiology, New Delhi, India, February 15-20, 1988 by : S. K. Sinha
Download or read book Proceedings of the International Congress of Plant Physiology, New Delhi, India, February 15-20, 1988 written by S. K. Sinha and published by . This book was released on 1990 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparative Performance of Hybrid and Composite Maize in Ralation to Density of Planting and N Fertilization by : Saudan Singh
Download or read book Comparative Performance of Hybrid and Composite Maize in Ralation to Density of Planting and N Fertilization written by Saudan Singh and published by . This book was released on 1987 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Indian Journal of Agricultural Sciences by :
Download or read book The Indian Journal of Agricultural Sciences written by and published by . This book was released on 1977 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grain Yield and Other Agronomic Characteristics of Selected Maize Hybrids Under Irrigation in Cyprus by : C. M. Josephides
Download or read book Grain Yield and Other Agronomic Characteristics of Selected Maize Hybrids Under Irrigation in Cyprus written by C. M. Josephides and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Bulletin by : M. A. B. Fakorede
Download or read book Research Bulletin written by M. A. B. Fakorede and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Heritability of Yield and Other Agronomic Traits of Maize (Zea Mays L.) by : Walter Elizalde-Ramos
Download or read book Determination of Heritability of Yield and Other Agronomic Traits of Maize (Zea Mays L.) written by Walter Elizalde-Ramos and published by . This book was released on 1985 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Bulletin written by and published by . This book was released on 1974 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Communication written by and published by . This book was released on 1980 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phenotypic and Genotypic Characterization of White Maize Inbreds, Hybrids and Synthetics Under Stress and Non-stress Environments by : Dan Makumbi
Download or read book Phenotypic and Genotypic Characterization of White Maize Inbreds, Hybrids and Synthetics Under Stress and Non-stress Environments written by Dan Makumbi and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize is susceptible to biotic and abiotic stresses. The most important abiotic stresses in Africa are drought and low soil fertility. Aflatoxin contamination is a potential problem in areas facing drought and low soil fertility. Three studies were conducted to evaluate maize germplasm for tolerance to stress. In the first study, fifteen maize inbred lines crossed in a diallel were evaluated under drought, low N stress, and well-watered conditions at six locations in three countries to estimate general (GCA) and specific combining ability (SCA), investigate genotype x environment interaction, and estimate genetic diversity and its relationship with grain yield and heterosis. GCA effects were not significant for grain yield across environments. Lines with good GCA effect for grain yield were P501 and CML258 across stresses. Lines CML339, CML341, and SPLC7-F had good GCA effects for anthesis silking interval across stresses. Additive genetic effects were more important for grain yield under drought and well-watered conditions. Heterosis estimates were highest in stress environments. Clustering based on genetic distance calculated using marker data from AFLP, RFLP, and SSRs grouped lines according to origin. Genetic distance was positively correlated with grain yield and specific combining ability. In the second study, synthetic hybrids were evaluated at seven locations in three countries to estimate GCA and SCA effects under low N stress and optimal conditions and investigate genotype x environment interaction. GCA effects were significant for all traits across low N stress and optimal conditions. The highest yielding synthetic hybrids involved synthetics developed from stress tolerant lines. Synthetics 99SADVIA-# and SYNA00F2 had good GCA for grain yield across low N stress conditions. Heterosis was highly correlated with grain yield. Optimal environments explained more variation than stress environments. The third study evaluated the agronomic performance and aflatoxin accumulation of single and three-way cross white maize hybrids at five locations in Texas. Inbreds CML343, Tx601W, and Tx110 showed positive GCA effects for grain yield. Significant GCA effects for reduced aflatoxin concentration were observed in lines CML269, CML270, and CML78 across locations. Differences in performance between single and three-way crosses hybrids were dependent mostly on the inbred lines.
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
