Identification of Stable High Yielding Maize (Zea Mays L.) Single Cross Hybrid (S) PDF Download
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Author: R.N. Poornima
Publisher:
ISBN:
Category :
Languages : en
Pages : 65
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Author: R.N. Poornima
Publisher:
ISBN:
Category :
Languages : en
Pages : 65
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Author: M. Sandeep
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Author: Weikai Yan
Publisher: CRC Press
ISBN: 1420040375
Category : Mathematics
Languages : en
Pages : 287
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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
Author: Kingstone Mashingaidze
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 372
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Author: Jean Barbara Cormack
Publisher:
ISBN:
Category :
Languages : en
Pages : 130
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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.
Author: J. Arahon Hernandez-Guzman
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
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Author: Elto Eugenio Gomes e Gama
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
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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.
Author: Dylan Schoemaker
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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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.
Author:
Publisher: CIMMYT
ISBN: 9791159416
Category :
Languages : en
Pages : 702
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Author: D. M. Reddy
Publisher:
ISBN:
Category :
Languages : en
Pages : 161
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