Evidence for Qualitative Suppression of Red Skin Color in Peach

Beckman, T.G.; Alcazar, J. Rodriguez; Sherman, W. B.; Werner, Dennis J.

doi:10.21273/hortsci.40.3.523

Cited by 20 publications

(15 citation statements)

References 4 publications

(2 reference statements)

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“…Based on coloration of the peel, we also expected to observe differences in ANC accumulation between the breeding selections lacking red color (NC 97-48 and NC Yellow) and cultivars that display significant red color in the same tissue ('Contender', 'China Pearl', and 'Carolina Gold'). The peel-specific ANC mutation in North Carolina peach germplasm has been designated H for Highlighter and differs from both ANC-less and white flower mutations previously described in peach (Beckman et al, 2005). In Rosaceae, MYB transcription factors (MYB10) regulate the transcription of UDP-glucose-flavonoid-3-O-glucosyltransferase (UFGT) and dihydroflavonol 4-reductase (DFR) genes and likely provide specific impact of ANC levels in the peel (Lin-Wang et al, 2010;Ravaglia et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Variation of Carotenoids and Polyphenolics in Peach and Implications on Breeding for Modified Phytochemical Profiles

Brown

Yousef

Guzmán

et al. 2014

J. Amer. Soc. Hort. Sci.

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The objective of this study was to examine the relative impact of genetics and environment on phenolic and carotenoid profiles in peach (Prunus persica) germplasm. Fully mature, (“ready-to-eat” stage) firm fruit of peach cultivars China Pearl, Contender, and Carolina Gold were collected from established trees at two North Carolina locations in 2009 and 2010. Advanced breeding selections NC Yellow and NC 97-48 were collected from a single location in both years. Using tandem extractions and chromatography analyses, 10 carotenoids and 24 phenolic compounds were quantified separately in the peel and flesh. Statistically significant differences were noted among peach cultivars and advanced selections for β-carotene, cyanidin-3-glucoside, cyanidin-3-rutinoside, cholorogenic acid, quercetin-3-glucoside, and individual procyanidins. Peel anthocyanin (ANC) concentration ranged from 183 mg/100 g in ‘Contender’ to non-detectable levels in NC97-48 and NC Yellow. ‘China Pearl’ and ‘Carolina Gold’ produced ANC levels approximately half of ‘Contender’. Chlorogenic acid concentration also fit a discrete pattern of accumulation but was not related to the accumulation of ANC. ‘China Pearl’, NC 97-48, and NC Yellow contained the highest levels of chlorogenic acid (105 to 136 mg/100 g), ‘Carolina Gold’ contained the lowest (52 mg/100 g), and ‘Contender’ represented an intermediate phenotype (70 mg/100 g). Statistically significant genetic variation was found for almost all compounds identified, whereas location and year effects tended to be compound-specific. For chlorogenic acid, 28% of the phenotypic variance was explained by location (year = nonsignificant), whereas 40% of the phenotypic variation of ANC was explained by differences in years (location = nonsignificant). Analyzing fruit from the same environment over 2 years or from two locations in the same year would not have adequately accounted for the variation associated with environment. The detailed phytochemical profile of peach reported here demonstrates the importance of multiyear, multilocation analysis in revealing accurate measures of phytochemical genetic variation and provides a comprehensive baseline analysis of phytochemicals in commonly grown peach cultivars that can be used to evaluate novel germplasm.

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Section: Discussionmentioning

confidence: 99%

Variation of Carotenoids and Polyphenolics in Peach and Implications on Breeding for Modified Phytochemical Profiles

Brown

Yousef

Guzmán

et al. 2014

J. Amer. Soc. Hort. Sci.

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“…S -17, S-22, S-33). The map location for the highlighter trait (h) in peach has not been determined (Beckman et al 2005). However, several color traits are associated with LG 3 such as flesh fruit color around the stone (Fs), anther color (Ag), and flower color (Fc) (17, 27.7, 40 cM, respectively) (Dirlewanger et al 2004;Yamamoto et al 2001).…”

Section: Loci Under Selectionmentioning

confidence: 99%

Genetic diversity in peach [Prunus persica (L.) Batsch] at the University of Florida: past, present and future

Chavez

Beckman

Werner

et al. 2014

Tree Genetics & Genomes

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The University of Florida (UF) stone fruit breeding and genetics program was created in 1952 to develop early ripening stone fruit cultivars with high quality, adaptation to summer rainfall, low chilling requirements, and the ability to withstand high disease pressure. Diverse germplasm sources were used to introduce desirable traits in UF breeding pool. The main objective of this research was to determine the genetic diversity and population structure of the breeding germplasm, and to search for loci under selection. A total of 195 peach genotypes were used: UF cultivars and advanced selections (n=168), cultivars and selections from the UF-UGA-USDA joint breeding effort (n=13), landrace cultivars (n=4), high-chilling cultivars released by NCSU (n=5), and related Prunus (n=5) species. A total of 36 SSR markers distributed across the peach genome amplified 423 alleles. An average of 18 genotypes were detected per marker: A (number of observed alleles) of 11.43, Ae (effective number of alleles) of 2.58, Ho (observed heterozygosity) of 0.4, He (expected heterozygosity) of 0.52, F (Wright's fixation index) of 0.25, and PIC (polymorphism information content) of 0.48. UPGMA cluster analysis based on Nei's genetic distance represented best the known pedigree information for the germplasm pools. Two major groups were observed across the germplasm corresponding to melting and non-melting flesh cultivars/selections. Population structure results supported these two major groups. Several loci closely located to genome regions where different phenotypic traits have been previously mapped were detected to be under selection.

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“…Previous works have described how the full-red and no-red colored fruit phenotypes are controlled by recessive Mendelian genes (Beckman and Sherman 2003;Beckman et al 2005). In addition, the Sc locus controlling fruit skin color has been reported to map on G6 (Yamamoto et al 2001); however, in these studies skin color was scored as a qualitative trait and not as quantitative.…”

Section: External Fruit Overcolor Qtlsmentioning

confidence: 99%

QTL analysis of fruit quality traits in two peach intraspecific populations and importance of maturity date pleiotropic effect

Eduardo

Pacheco

Chietera

et al. 2010

Tree Genetics & Genomes

136

174

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Two intraspecific peach breeding populations have been used to conduct a quantitative trait locus (QTL) analysis of fruit quality traits: an F 1 from the cross Bolero (B) x OroA (O) and an F 2 from the cross Contender (C) x Ambra (A). A total of 344 Prunus simple sequence repeats (SSRs) were analyzed in B, O, C, A parents and CxA F 1 hybrid. Eight SSR were mapped for the first time in peach. A multiplex-ready polymerase chain reaction (PCR) protocol has allowed considerable time and cost saving during genotyping steps. Two maps (B map and O map) were produced for BxO population following the pseudo-test cross strategy and one for CxA. No marker could be mapped on G6 for the B map, on G4 and G8 for the O map and on G5 for the CxA map. Both populations were phenotyped over 2 years for maturity date (MD), fruit weight, external fruit skin overcolor, juice total soluble solids (SSC, Brix degree), juice titrable acidity and juice pH. Data for blooming time and flower type were scored only for BxO in 2007. All traits had a normal distribution, except for MD which was bimodal in BxO and trimodal in CxA, where it was scored as a co-dominant trait. Up to two QTLs per trait were detected in each population, and most of them were located in the same region forming clusters of QTLs, especially on G4. This is likely due to a major pleiotropic effect of MD masking the identification of other QTLs for different traits.

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Evidence for Qualitative Suppression of Red Skin Color in Peach

Cited by 20 publications

References 4 publications

Variation of Carotenoids and Polyphenolics in Peach and Implications on Breeding for Modified Phytochemical Profiles

Variation of Carotenoids and Polyphenolics in Peach and Implications on Breeding for Modified Phytochemical Profiles

Genetic diversity in peach [Prunus persica (L.) Batsch] at the University of Florida: past, present and future

QTL analysis of fruit quality traits in two peach intraspecific populations and importance of maturity date pleiotropic effect

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