Estimates of repeatability for selection of genotypes of seedless table grapes for Brazilian semiarid regions

Sales, Witalo da Silva; Ishikawa, Francine Hiromi; Souza, E. M. de C.; Nascimento, J. H. B.; Souza, Edimara Ribeiro de; Leão, P. C. de S.

doi:10.1016/j.scienta.2018.10.018

Cited by 9 publications

(4 citation statements)

References 14 publications

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“…The superiority of the temporary environmental variance (V te ) in relation to the permanent phenotypic variance estimated between plants (V pp ) (Table 2) indicate that these characteristics are highly influenced by environmental conditions. Results similar to these were reported by Carvalho et al (2023) for yield, number of bunches, bunch traits, soluble solids content, titratable acidity and ratio; Sanchéz et al (2017) for fruit production; and Sales et al (2019) for all the variables evaluated by them (yield, bunch weight, soluble solids content, and ratio), with the exception of the number of bunches, in which the V pp values were greater than the V te values. In contrast, Leão et al (2018) detected higher V pp…”

Section: Discussionsupporting

confidence: 84%

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Multitrait selection in seedless grape hybrids in semiarid regions of Brazil

Carvalho

Pio

et al. 2023

Crop Science

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The absence of seeds has been one of the most valued traits in grapes (Vitis spp.) for fresh consumption. However, the simultaneous selection of superior genotypes for multiple traits is complex. The objective of this study was to select genotypes of superior seedless table grapes in semiarid regions of Brazil. Multiple traits were considered by using the factor analysis and genotype–ideotype best linear unbiased prediction (FAI‐BLUP) selection index. A total of 110 grape progenies from 24 crosses were evaluated for traits of agronomic interest. Each hybrid was represented by a single vine plant, without experimental design or repetition. The mixed‐model methodology was used to predict the breeding values. The FAI‐BLUP index was used to select superior genotypes based on factor analysis and the genotype–ideotype distance. Four factors explained the 11 characteristics studied, with a variability of 81.84%. Desirable gains were observed for 10 of the 11 traits evaluated. The FAI‐BLUP index allowed the selection of superior seedless table grape hybrids, which can be used in the genetic improvement of grapevines. In conclusion, we report the selection of seedless table grape hybrids for our study to advance in the table grape breeding program in Brazilian semiarid regions.

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Section: Discussionsupporting

confidence: 84%

“…(2017) for fruit production; and Sales et al. (2019) for all the variables evaluated by them (yield, bunch weight, soluble solids content, and ratio ), with the exception of the number of bunches, in which the V pp values were greater than the V te values. In contrast, Leão et al.…”

Section: Discussionmentioning

confidence: 99%

Multitrait selection in seedless grape hybrids in semiarid regions of Brazil

Carvalho

Pio

et al. 2023

Crop Science

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“…The differences obtained in this study between Vpp and Vte are probably related to the genetic structure of populations as well as the biotic and abiotic environmental effects that act on them. Similar results of greater phenotypic than environmental variation were observed for fruit traits in other perennial species, e.g., acerola (Malpighia emarginata), mango (Mangifera indica L.), sweet orange (Citrus sinensis (L.) Osbeck), peach (Prunus persica L. Batsch), and grapevine (Vitis vinifera) (Lopes et al 2001;Costa 2003;Negreiros et al 2008;Bruna et al 2012;Da Silva Sales et al 2019).…”

Section: Discussionmentioning

confidence: 57%

“…REML/BLUP analyses have been increasingly used in plant breeding, especially with perennial crops. From this perspective, many studies have been carried out to improve forest species, e.g., rubber (Kalil et al 2000) and eucalyptus (Rocha et al 2006), species that produce essential stimulant foods, e.g., coffee (Petek et al 2008), and various fruit species, including acerola (Paiva et al 2002), cupuaçu (Alves and Resende 2008), papaya (Oliveira et al 2012), açaí (Teixeira et al 2012, passion fruit (Santos et al 2015), mango (Arriel et al 2016), guava (Dos Santos et al 2017), soursop (Sanchéz et al 2017), and grapevine ( Da Silva Sales et al 2019).…”

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confidence: 99%

Repeatability coefficient for fruit quality and selection of mango hybrids using REML/BLUP analysis

Costa

Neto

et al. 2023

Preprint

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Mango is a tropical fruit of significant economic, social, and nutritional importance. However, the low diversity of commercial mango orchards in Brazil highlights the need to broaden the genetic base of this crop. From this perspective, this study aimed to select mango genotypes for cultivation under semi-arid conditions using the mixed model methodology: restricted maximum likelihood/best linear unbiased prediction (REML/BLUP). Two hundred and ninety-two plants were evaluated over two crop seasons using fifteen traits related to fruit quality. The statistical analyses were performed with the software Selegen. The repeatability coefficient estimates (r) ranged from 0.06 to 0.97, and were considered high for most variables. The selective accuracy predicted by REML for the evaluated parameters ranged from 0.25 to 0.98, revealing a good degree of confidence in the inferences. For all evaluated traits there was a genetic gain with selection. Twelve genotypes were selected as the most promising using the minimum selection indices proposed in this study, showing higher mean values for all evaluated traits. These genotypes can be selected for new stages of the mango breeding program in the Brazilian semi-arid region.

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