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      Estimation of genetic parameters and selection for rooting capacity in peach

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          Abstract

          Abstract One of the most important criteria in the improvement of rootstocks is easiness of propagation. The objective of the present study was to verify the existence of genetic variability and the possibility of gains with selection in the rooting capacity among peach genotypes. Seventy-seven genotypes of peach belonging to five F3 families were evaluated. Rooting percentage (RP), number of roots per cutting (NR) and mean root length (RL) were evaluated. Genetic values were estimated. The nineteen genotypes with the lowest rank summation index were selected to estimate the genetic gains. The variables RP, NR and RL had progeny mean heritabilities of 0.53, 0.60 and 0.83, respectively. Of the individuals selected, 89.5% belonged to the 713 (Talismã x Adafuel) family. The estimation of the genetic and phenotypic parameters show the possibility of success by selecting superior genotypes, with gains of 9.09, 17.47 and 24% for RP, NR and RL, respectively.

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          Most cited references 15

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          Precisão e controle de qualidade em experimentos de avaliação de cultivares

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            Genotype selection by REML/BLUP methodology in a segregating population from an interspecific Passiflora spp. crossing

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              Plant selection in F2 segregating populations of papaya from commercial hybrids

              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.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cbab
                Crop Breeding and Applied Biotechnology
                Crop Breed. Appl. Biotechnol.
                Crop Breeding and Applied Biotechnology (Viçosa, MG, Brazil )
                1518-7853
                1984-7033
                September 2018
                : 18
                : 3
                : 320-324
                Affiliations
                Viçosa Minas Gerais orgnameUniversidade Federal de Viçosa orgdiv1Departamento de Fitotecnia Brazil
                Barra Bahia orgnameUniversidade Federal da Bahia Brazil
                Jataí Goiás orgnameUniversidade Federal de Goiás Brazil
                Article
                S1984-70332018000300320
                10.1590/1984-70332018v18n3n47

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 21, Pages: 5
                Product
                Product Information: website

                REML/BLUP, Selection index, Cuttings, Prunus persica, Rootstock

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