2013
DOI: 10.1590/s0100-204x2013001200004
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Análise dialélica parcial em gerações avançadas para seleção de populações segregantes de trigo

Abstract: Resumo -O objetivo deste trabalho foi estimar, em gerações avançadas, os efeitos da capacidade geral e específica de combinação de genitores de trigo, bem como selecionar populações segregantes superiores. Doze genitores e suas 36 populações nas gerações F 2 e F 3 , obtidas em arranjo de dialelo parcial, foram avaliados quanto à produtividade de grãos. Utilizou-se o delineamento em látice 7x7, com duas repetições, mais um tratamento para completar o látice. O efeito de capacidade geral de combinação foi signif… Show more

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Cited by 13 publications
(17 citation statements)
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References 19 publications
(15 reference statements)
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“…In the contrast between groups for the morphoagronomic traits in the mean between the two evaluation cuts in the wet season, only the mean squares of the traits HGT and LW were significant at the level of 1% probability by the F test (Table 1). This fact evidences that, for the traits SD, NT, %DM, and DMY, the average number of favorable alleles is similar in both groups of parents as a result of the presence of productive genotypes in both groups (Pimentel et al, 2013).…”
Section: Analysis Of Variance For Combining Abilitysupporting
confidence: 65%
See 1 more Smart Citation
“…In the contrast between groups for the morphoagronomic traits in the mean between the two evaluation cuts in the wet season, only the mean squares of the traits HGT and LW were significant at the level of 1% probability by the F test (Table 1). This fact evidences that, for the traits SD, NT, %DM, and DMY, the average number of favorable alleles is similar in both groups of parents as a result of the presence of productive genotypes in both groups (Pimentel et al, 2013).…”
Section: Analysis Of Variance For Combining Abilitysupporting
confidence: 65%
“…Thus, the presence of dominance deviations indicates that the exploration of the hybrid is favorable (Cruz et al, 2012). Therefore, these analyses are important in the choice of the method for directing populations in a breeding program (Pimentel et al, 2013). Among the most commonly used crossing arrangements is the Griffing (1956) method, which provides the estimate of the specific and general combining abilities (SCA and GCA, respectively) and a reduction in the number of crosses.…”
Section: Introductionmentioning
confidence: 99%
“…from those fixed for the same trait in the other group, generating complementarity between gene loci and, consequently, resulting in the generation of superior transgressive segregates. Some studies have been conducted involving partial diallel analysis of wheat in which the establishment of the groups did not obey criteria based on genetic diversity, which lead to low genetic complementarity, both general and specific (Pimentel et al 2013a, Pimentel et al 2013b).…”
Section: Resultsmentioning
confidence: 99%
“…For this reason, to better understand genetic control of the target trait and to establish more efficient selection strategies, it is important to study the performance of populations in more advanced generations, such as the F 6 populations evaluated in the present study (Melo et al 1997, Pimentel et al 2013). However, the higher mean square of GCA II in relation to SCA indicates greater importance of the additive effects, and the R 2 values confirm these results.…”
Section: Lu Ferreira Et Almentioning
confidence: 99%