Screening sweet cherry cultivars from the Pacific Agri-Food Research Centre Summerland breeding program for resistance to brown rot (<i>Monilinia fructicola</i>)

Kappeland, Frank; Sholberg, P. L.

doi:10.4141/cjps07137

Cited by 10 publications

(10 citation statements)

References 7 publications

(8 reference statements)

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“…The annual disparity found in the responses of the genotypes to brown rot after inoculation may be due to different levels of cuticular cracking or fractures, as has been reported for stone fruits by other authors (Gradziel et al, 2003;Kappel and Sholberg, 2008). Cuticular cracks are considered to be the preferential portal of entry for fungi pathogens in the Monilinia genus (Gibert et al, 2007), and the incidence of fruit infection increases with increasing fruit cuticular crack surface area (Borve et al, 2000;Gibert et al, 2009).…”

Section: Discussionmentioning

confidence: 58%

Breeding strategies for identifying superior peach genotypes resistant to brown rot

Ikechukwu

Barriuso

Usall³

et al. 2019

Scientia Horticulturae

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A sustainable approach to control the incidence of brown rot in pre-and post-harvest management is to select genotypes with high contents of antioxidant compounds and tolerance to Monilinia laxa (Aderh. and Ruhland) Honey. In this study, 68 progenies of the 'Babygold 9' × 'Crown Princess' population from the EEAD-CSIC breeding program were screened under controlled conditions for a period of 3 years (2013-2015). Susceptibility to brown rot was evaluated after inoculating 20 healthy fruits per genotype with M. laxa. Brown rot incidence, lesion diameter, and colonization extent, as well as the severities of these issues, were calculated after 5 days of incubation. Physicochemical traits, such as fruit firmness and soluble solids content, were also recorded before and after storage. Titratable acidity, pH, and antioxidant composition were measured at harvest. Significant differences were found for pathogenic traits, as well as for contents of vitamin C, total phenolics, flavonoids, and anthocyanins, within genotypes in this population. Negative correlations were also found between the content of phytochemical compounds (such as anthocyanins and total phenolics), as well as disease incidence and severity. Differences in susceptibility to brown rot confirm the genetic variability available in these progeny. This allowed the selection of six genotypes highly resistant to brown rot of M. laxa, with high organoleptic properties and high phenol content, to be introduced in our peach breeding program.

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Section: Discussionmentioning

confidence: 58%

Breeding strategies for identifying superior peach genotypes resistant to brown rot

Ikechukwu

Barriuso

Usall³

et al. 2019

Scientia Horticulturae

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“…The application of standard methods to screen resistance to Monilinia spp. on apricot, cherry, nectarine and plum highlighted a variable range of susceptibility, indicating that this trait has a genetic component. Phenotyping constitutes the basis for the identification of suitable parents for efficient breeding programs to improve this trait and is a requirement for finding the genetic determinants underlying the observed variability.…”

Section: Introductionmentioning

confidence: 99%

Exploring sources of resistance to brown rot in an interspecific almond × peach population

et al. 2019

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BACKGROUND Monilinia spp. are responsible for brown rot, one of the most significant stone fruit diseases. Planting resistant cultivars seems a promising alternative, although most commercial cultivars are susceptible to brown rot. The aim of this study was to explore resistance to Monilinia fructicola over two seasons in a backcross one interspecific population between almond ‘Texas’ and peach ‘Earlygold’ (named T1E). RESULTS ‘Texas’ almond was resistant to brown rot inoculation, whereas peach was highly susceptible. Phenotypic data from the T1E population indicated wide differences in response to M. fructicola. Additionally, several non‐wounded individuals exhibited resistance to brown rot. Quantitative trait loci (QTLs) were identified in several linkage groups, but only two proximal QTLs in G4 were detected over both seasons and accounted for 11.3–16.2% of the phenotypic variation. CONCLUSION Analysis of the progeny allowed the identification of resistant genotypes that could serve as a source of resistance in peach breeding programs. The finding of loci associated with brown rot resistance would shed light on implementing a strategy based on marker‐assisted selection (MAS) for introgression of this trait into elite peach materials. New peach cultivars resistant to brown rot may contribute to the implementation of more sustainable crop protection strategies. © 2019 Society of Chemical Industry

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“…For this reason, the standard error bars are much smaller in the evaluations with injury when compared to the uninjured fruit evaluations, both for BRI in the parents and in the progeny (Figure 1). This indicates that the sample means were more reliable when the wound was used, and this methodology is recommended, since microcracks of diverse origin can exist and are highly associated with the environmental conditions and not with the genotype, presenting a disparity between the evaluated seasons [13,27,35,36].…”

Section: Discussionmentioning

confidence: 99%

Breeding Peaches for Brown Rot Resistance in Embrapa

et al. 2022

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Brown rot, caused by Monilinia spp., is the main stone fruit disease. Major efforts to detect sources of resistance are being applied by several breeding programs worldwide. The main objective of this study was to seek sources of brown rot resistance, as well as to study the segregation, estimate the heritability, verify the possible existence of the maternal effect, and estimate the genetic advances. For this purpose, 20 parents and 303 seedlings, representing 16 breeding families, and ‘Bolinha’ (control) have been phenotyped for fruit reaction to brown rot using wounded and non-wounded inoculation procedures in 2015–2016, 2016–2017, and 2017–2018 growing seasons. Wounded fruits were very susceptible to brown rot incidence, however, the incidence and severity of non-wounded fruits showed high variability among the evaluated genotypes. Conserva 947 and Conserva 1600 and their progeny, had lower disease incidence and severity than most of the evaluated genotypes. Genetic gain estimation was −5.2 to −30.2% (wounded fruits) and between −15.0 to −25.0% (non-wounded fruits) for brown rot resistance. Selected genotypes were equal to or better than ‘Bolinha’ in relation to brown rot resistance, with several of them far superior in fruit quality than ‘Bolinha’, demonstrating the progress of the Embrapa Peach Breeding Program.

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Screening sweet cherry cultivars from the Pacific Agri-Food Research Centre Summerland breeding program for resistance to brown rot (Monilinia fructicola)

Cited by 10 publications

References 7 publications

Breeding strategies for identifying superior peach genotypes resistant to brown rot

Breeding strategies for identifying superior peach genotypes resistant to brown rot

Exploring sources of resistance to brown rot in an interspecific almond × peach population

Breeding Peaches for Brown Rot Resistance in Embrapa

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