Genetic progress over 53 years of the peach breeding program of Embrapa: canning genotypes

Nardino, Maicon; Corrêa, Elisia Rodrigues; Raseira, M. do C. B.; Real, Isadora Moreira da Luz; Barros, Willian Silva; Franzon, Rodrigo Cezar

doi:10.1007/s10681-022-02984-3

Cited by 2 publications

(5 citation statements)

References 22 publications

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“…Unlike annual crops, where breeding programs continually produce new varieties cutting-edge technologies and molecular breeding ( Fujino et al, 2017 ; Guzmán et al, 2019 ; Cappetta et al, 2020 ; Merrick et al., 2022 ), most perennial fruit crops present a different scenario. While certain crops, such as peach ( Nardino et al., 2022 ), plum ( Castro et al., 2013 ) or apple ( Teh et al., 2021 ), continually develop and implement new varieties, other crops such as pistachio ( Sheikhi et al., 2019 ) or olive tree ( Rallo et al., 2018 ) show a slower adoption of new varieties, mainly due to the deep-rooted use of conventional varieties ( Marchese et al., 2016 ). Additionally, the long transition from the juvenile to the adult phase further extends the timeline for developing new varieties ( Vargas et al., 2002 ; Rallo et al., 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Genotypic influence in the juvenile to adult transition in olive seedlings

Valverde,

Diez,

Deger

et al. 2024

Front. Plant Sci.

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Olive breeding is a long process and any improvement in shortening the juvenile phase is highly desirable. In the present study, the effect of olive tree parents in different agronomic characteristics have been evaluated during four years in 520 olive genotypes generated from three different crosses in three different experimental fields, all located in Andalusia region, Spain. The crosses evaluated are ‘Arbosana’ x ‘Sikitita’ and its reciprocal, whose parents are characterized by being early bearers; and ‘Frantoio’ free pollinated, whose mother variety is characterized by having a long unproductive period. We studied plant height, distance and time to the first flowering, plant vigor and percentage of olive oil in the fruits. The findings reveal that progeny from ‘Arbosana’ and ‘Sikitita’ crosses, irrespective of the direction of the cross, exhibited a lower distance to flower, early bearing, reduced vigor and a lower percentage of olive oil in fruit compared to ‘Frantoio’ seedlings obtained from free pollination. Furthermore, no discernible differences were observed in the evaluated characteristics when comparing reciprocal crosses across the three fields in the four-years assessment period. Therefore, these results highlight the significance of planting height in reducing the evaluation period required in an olive breeding program and support the hypothesis that there is no maternal effect in the inheritance of the evaluated agronomic characteristics in olive trees.

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Section: Discussionmentioning

confidence: 99%

Genotypic influence in the juvenile to adult transition in olive seedlings

Valverde,

Diez,

Deger

et al. 2024

Front. Plant Sci.

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show abstract

“…When comparing the progress achieved in the two periods, it can be concluded that the progress achieved in the development of fruits for processing (NARDINO et al, 2022) was greater than that for fruits for fresh consumption, except for the average fruit mass in the first period, in which the canned type decreased, and the table type increased. However, in the combination of the two, the canned type increase of 10 to 11g in each 100g of fruit surpassed the 5 to 6g increase of the table type.…”

Section: Rahmatimentioning

confidence: 93%

“…However, due to the increased number of genotypes and reduced human resources to conduct this task, it was almost impossible to maintain the counting in the second period. We decided to assign a degree of production on a scale, as referred by Nardino et al (2022). Total soluble solids (TSS) were measured in °Brix, from three to five fruits per cultivar and year, using a refractometer.…”

Section: Brs Kampaimentioning

confidence: 99%

“…Analyses of the weighted average genetic gains were implemented according to the method of adjusted means described by Breseghello et al (1998), also employed in similar research by Nardino et al (2022). The average genetic gain and its genetic covariance matrix were calculated for the number of years in which the trait was available, using generalized linear regression for the average BLUE of the year in accordance with the equations: , and Where:…”

Section: Brs Kampaimentioning

confidence: 99%

“…Even so, the number of fruits and productivity obtained greater gain, compared to the first period. This can be attributed to the direction of the program, which prioritized, in the early years, obtaining genotypes that produced fruits for canning, which later tended to achieve a balance in importance between the two lines (table and canning types) (NARDINO et al, 2022).…”

Section: Rahmatimentioning

confidence: 99%

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Genetic progress in 53 years of the Peach Breeding Program of Embrapa: Fresh market cultivars

et al. 2023

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A peach breeding program started in 1963, at the Experiment Station of Pelotas, nowadays Embrapa Clima Temperado, whose primary aim was developing cultivars adapted to mild winter conditions. Its first priority was to obtain cultivars of canning type fruits, and over the years, the fresh market cultivars acquired equal importance. This article analyzes the data of 84 fresh market cultivars, obtained in Pelotas, from 1964 to 2017, focusing on the following parameters: time of ripening, fruit development period, average fruit mass, number of fruits per tree, productivity per plant and total soluble solids. First, the data were tabulated, divided into two periods (1964-1984 and 1985-2017), and the descriptive statistical analysis was performed, followed by an analysis via mixed models and estimates of genetic progress via meta-analysis. The main results revealed a reduced fruit development period of the fresh market peaches belonging to that program. It was also observed a significant spread of the time of ripening (end of September or beginning of October until January), with a slight tendency for earliness. Genetic gain was observed for yield corresponding to 1.17 and 2.25% per year, for 1964-1984 and 1985-2017, respectively.

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Genetic progress over 53 years of the peach breeding program of Embrapa: canning genotypes

Cited by 2 publications

References 22 publications

Genotypic influence in the juvenile to adult transition in olive seedlings

Genotypic influence in the juvenile to adult transition in olive seedlings

Genetic progress in 53 years of the Peach Breeding Program of Embrapa: Fresh market cultivars

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