Genetic variation among and within provenances and progenies of Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, in Pederneiras, SP

Sato, Aida Sanae; Freitas, Miguel Luiz Menezes; Lima, Israel Luiz de; Zimback, Léo; Toniato, Maria Teresa Zugliani; Sebbenn, Alexandre Magno

doi:10.1590/s0104-77602010000100007

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…Hill & L.A.S. Johnson at age 4 years (Sato et al 2010) and E. camaldulensis at age 19 years (Moraes et al 2007), which ranged between 2.8 and 5.39% for DBH and H, whereas we observed values between 6.79 and 11.92%. We observed high values of Ac prog for DBH and H at both ages (0:70 Ac prog \0:90) (Resende and Duarte 2007).…”

Section: Genetic Parameter Estimatescontrasting

confidence: 62%

Are tree breeders properly predicting genetic gain? A case study involving Corymbia species

et al. 2018

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The estimation of quantitative genetic parameters in breeding programs is important to ensure efficient selection. In this context, knowledge of the mating system is critical, as it underpins assumptions about inter-relatedness on which variance component estimation depends. However, proper account of the breeding system is not always taken, either because it is unknown and/or because it is ignored. That eucalypts have a mixed-mating system is well-established, however many breeders use models that assume outcrossed mating with an infinite number of male parents (i.e. allogamous mating), from which genetic parameter estimates are then used to predict genetic gains. First-generation, open-pollinated progeny tests of Corymbia citriodora subsp.

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Section: Genetic Parameter Estimatescontrasting

confidence: 62%

Are tree breeders properly predicting genetic gain? A case study involving Corymbia species

et al. 2018

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“…Engel et al (2016), evaluating early selection in E. macarthurii, observed genetic correlations above 0.63 among the ages studied, but the correlations at younger ages were lower. Sato et al (2010) identified high and positive correlations between the ages of 4 and 21 years in C. maculata. For Pavan et al (2014), the closer the ages were, the higher the positive correlations between ages.…”

Section: Resultsmentioning

confidence: 91%

Intra-and intergenotypic competition among commercial eucalyptus clones

Pavan

Amaral

Paula

et al. 2019

Crop Breed. Appl. Biotechnol.

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Plantations made up of clones carry genetic uniformity that can compromise production. The use of multiclonal plantations is a possible solution. The objective of this study was to identify effects of competition on silvicultural performance of Eucalyptus spp. commercial clones. The experiment was carried out in a randomized block design with 12 eucalyptus clones, three replicates, and five plants per plot. Clones were evaluated for two competition types, intra-and intergenotypic, at 3 and 5 years of age. Competition parameters were estimated based on the analyses performed. Differences were found between the types of competition at both ages for mean annual increment and wood volume. Clones 8 and 9 stood out from the others in both intra-and intergenotypic competition. At 5 years of age, intergenotypic competition produced productivity gains of 13% in clones 8 and 9 and 4% overall considering wood volume and mean annual increment.

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“…Corymbia maculata and Corymbia torelliana present good industrial and silvicultural characteristics (Shepherd et al 2007). However, there is little information about the selection strategies for these species and its hybrids (Darrow 1985;Dickinson et al 2013, Lee et al 2009Sato et al 2010).…”

Section: Introductionmentioning

confidence: 99%

GGE biplot-based genetic selection to guide interspecific crossing in Corymbia spp.

et al. 2021

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Tree breeders are prioritizing the increase of the interspecific diversity in the breeding programs due to the pronounced environmental changes, and expansion of the forest frontier to less productive areas. In this scenario, there is a growing interest for species of the genus Corymbia due to their good growth, resistance to biotic and abiotic factors, and industrial properties. Also, Corymbia spp. can cross with each other, generating interspecific hybrids. However, there are great difficulties on defining the best crosses. Thus, the objectives of this study were to evaluate the genetic variability of 64 progenies of Corymbia maculata and 64 progenies of Corymbia torelliana and to use the GGE biplot method to point the most appropriated crosses to broad and specific environments in order to generate stable and productive interspecific hybrids of C. maculata and C. torelliana. The GGE biplot was an efficient method for evaluating the genetic variability between progenies, for visualizing the genotype by environment interaction pattern and for identifying the best crosses in order to generate interspecific hybrids of the species. By adopting a selection intensity of 10%, the recommended progenies to generate interspecific hybrids for the Aracruz municipality (

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Genetic variation among and within provenances and progenies of Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, in Pederneiras, SP

Cited by 5 publications

References 10 publications

Are tree breeders properly predicting genetic gain? A case study involving Corymbia species

Are tree breeders properly predicting genetic gain? A case study involving Corymbia species

Intra-and intergenotypic competition among commercial eucalyptus clones

GGE biplot-based genetic selection to guide interspecific crossing in Corymbia spp.

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