Genotype X Environmental Interaction
Mostrando 25-28 de 28 artigos, teses e dissertações.
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25. Análise da interação genótipo X ambiente assistida por marcadores moleculares em milho (Zea mays L.). / Genotipe x environment interaction analysis assisted by molecular markers in maize (Zea mays L.).
Grain yield in maize is a complex trait, highly dependent on environmental conditions. Identification of consistent chromosomal regions across environments related to this trait is desirable in the context of marker assisted selection. This work was aimed at identifying regions associated with maize grain yield by stepwise multiple regression analysis in sev
Publicado em: 2005
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26. Biometrical aspects of QTL detection in cultivated species. / Aspectos biométricos da detecção de QTL S ("Quantitative Trait Loci") em espécies cultivadas.
In general terms, QTL mapping di®ers from other research ac-tivities in genetics. Being basically a multiple test procedure, problems arise which are related to the joint level of signi¯cance of the analysis, and consequently, to its power. Using computational simulation of data, the power of simple marker analysis, carried out through multiple linear regr
Publicado em: 2001
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27. An Experimental Test of the Relationship between Genetic Variation and Environmental Variation in Tribolium Flour Beetles
The hypothesis that a component of genetic variation for polygenic fitness traits is maintained by environmental heterogeneity was tested using an experimental system involving two species of flour beetles, Tribolium castaneum and T. confusum. Replicated populations of each species from a number of environmental treatments were analyzed for various fitness c
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28. Heritable Variation for Sex Ratio under Environmental Sex Determination in the Common Snapping Turtle (Chelydra Serpentina)
The magnitude of quantitative genetic variation for primary sex ratio was measured in families extracted from a natural population of the common snapping turtle (Chelydra serpentina), which possesses temperature-dependent sex determination (TSD). Eggs were incubated at three temperatures that produced mixed sex ratios. This experimental design provided estim