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The use of different clustering methods in the evaluation of genetic diversity in upland cotton Rev. Ciênc. Agron.
Araújo,Laíse Ferreira de; Almeida,Wener Santos de; Bertini,Cândida Hermínia Campos de Magalhães; Vidal Neto,Francisco das Chagas; Bleicher,Ervino.
The continuous development and evaluation of new genotypes through crop breeding is essential in order to obtain new cultivars. The objective of this work was to evaluate the genetic divergences between cultivars of upland cotton (Gossypium hirsutum L.) using the agronomic and technological characteristics of the fibre, in order to select superior parent plants. The experiment was set up during 2010 at the Federal University of Ceará in Fortaleza, Ceará, Brazil. Eleven cultivars of upland cotton were used in an experimental design of randomised blocks with three replications. In order to evaluate the genetic diversity among cultivars, the generalised Mahalanobis distance matrix was calculated, with cluster analysis then being applied, employing various...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gossypium hirsutum L.; Fibre quality; Agronomic characteristics.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200012
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Correlations and path analysis in components of fiber yield in cultivars of upland cotton Bragantia
Araújo,Laíse Ferreira de; Almeida,Wener Santos de; Bertini,Cândida Hermínia Campos de Magalhães; Vidal Neto,Francisco das Chagas; Bleicher,Ervino.
This study evaluated the relative contribution of agronomic and technological components on the fiber yield in upland cotton cultivars. The experiment was carried out with 11 upland cotton cultivars in a completely randomized blocks design with three replications. Initially, we performed analysis of variance, with the F test at 5% probability for the effect of cultivar as fixed effects as well as block and environment effects as random. Then the values were ordered according to cluster test Scott-Knott, at 5% probability level. The significance of the null hypothesis that all possible canonical correlations are null was evaluated using the chi-square test. The correlations were estimated through the path analysis. By examining the canonical correlations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gossypium hirsutum; Fiber quality; Agronomic traits.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300002
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