Diallels
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Incomplete Steiner Triple Systems over balanced square lattices to diallel analysis / Sistemas triplos de Steiner incompletos versus Látices Quadrados Balanceados para a análise dialélica
The aim of this work was to compare a fraction of a 15 treatments Steiner Triple Systems (STS) to a 4x4 balanced square lattice design (LQB). We simulate experiments with 15 or 16 treatments. To the former, 5 superblocks of the STS was augmented of 1 treatment each. To the LQB one treatment was repeated if only 15 was in the experiment. To simulate treatment
Publicado em: 2009
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2. EficiÃncia de dialetos circulantes para escolha de genitores baseada na simulaÃÃo de dados / Efficiency of circulating diallels to parental choice based in data simulation
In diallel analysis studies the genetic delineation, providing estimates with useful parameters in the election of genitors well with the agreement of the genetic effect involved in the determination of the quantitative characters. This work had as objective, to evaluate the efficiency of the circulat diallels in relation to the complete diallels, how much t
Publicado em: 2006
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3. Prediction of hybrid means from a partial circulant diallel table using the ordinary least square and the mixed model methods
By definition, the genetic effects obtained from a circulant diallel table are random. However, because of the methods of analysis, those effects have been considered as fixed. Two different statistical approaches were applied. One assumed the model to be fixed and obtained solutions through the ordinary least square (OLS) method. The other assumed a mixed m
Genetics and Molecular Biology. Publicado em: 2005
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4. Estimation of variances of the effects of incomplete diallels using a matrix approach
A matrix approach is described for assessing the variance of effects in incomplete diallels designs. The method is illustrated by reference to simulated complete and incomplete diallels using different combinations of constraints, average degree of dominance and, for the incomplete diallel, number of hybrids. Our results showed that caution should be taken i
Genetics and Molecular Biology. Publicado em: 2004
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5. EstratÃgias de prediÃÃo de cruzamentos nÃo realizados em anÃlise dialÃlica, utilizando informaÃÃes de marcadores moleculares. / Alternatives for predicting effects of missing crosses in diallels, with information from molecular markers.
Diallel crosses are largely used by breeders to assist choosing parents and/or populations. One constraint of such designs is the effort required to obtain crosses, the amount of which grows exponentially as the number of parents increases. This work aimed at evaluation some approaches to predict effects of missing crosses in diallel analysis, comprising 120
Publicado em: 2004
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6. Maternal and Reciprocal Effects on Seedling Characters in ARABIDOPSIS THALIANA (L.) Heynh
Five early growth characters were examined in six races of Arabidopsis thaliana (L.) Heynh, their reciprocal F1 hybrids (1974) and F1 by tester hybrids, using a seventh race as a paternal tester. Three of the five characters were also examined at two nutrient levels in reciprocal F1 hybrids (1972) of all seven races. Analyses of F1 and F1 by tester hybrids