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- Title
Plant selection in F<sub>2</sub> segregating populations of papaya from commercial hybrids.
- Authors
Oliveira, Eder Jorge; Fraife Filho, Gilberto de Andrade; De Freitas, Juan Paulo Xavier; Loyola Dantas, Jorge Luiz; De Resende, Marcos Deon Vilela
- Abstract
The objective of this paper was to estimate the genetic parameters and additive genetic values in segregating populations of papaya using the mixed model methodology. Two F2 populations from Tainung and Calimosa hybrids were evaluated. The experimental design was an augmented block with four replicates, and Golden and Calimosa cultivars were the common treatment. Estimates of individual heritability were high for fruit length (FL) and weight (FW), moderate for fruit diameter (FD), and low for total soluble solids (TSS) and fruit firmness (FF). Considering FF and TSS as main traits for selection, genotypes of Calimosa-F2 population showed better performance to FF, but worse concerning TSS. It was selected 18.3% and 24.6% of plants from Tainung-F2 and Calimosa-F2 populations, respectively. Negative correlation between TSS and FF was not able to reduce the genetic gains. The segregating populations from Calimosa hybrid are more promising for the selection of papaya lines
- Subjects
PLANT selection; PAPAYA; STATISTICAL hypothesis testing; ANALYSIS of variance; EXPERIMENTAL design
- Publication
Crop Breeding & Applied Biotechnology, 2012, Vol 12, Issue 3, p191
- ISSN
1518-7853
- Publication type
Article
- DOI
10.1590/s1984-70332012000300005