Pepino (<i>solanum muricatum</i>): Chemical composition of ripe fruit

Redgwell, Robert J.; Turner, N. A.

doi:10.1002/jsfa.2740371211

Cited by 37 publications

(36 citation statements)

References 7 publications

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“…We have found values for SSC to be relatively high for this species (Redgwell and Turner 1986;. Although values for heritabilities are, in general, low (Table 2), it seems possible to select individuals with a high SSC both in the populations of hybrids and selfings.…”

Section: Resultsmentioning

confidence: 68%

“…In general, values for heritabilities were moderate. Clones with TA values higher than those previously reported (Redgwell and Turner 1986;ElZeftawi et al 1988;Ahumada and Cantwell 1996) may be selected if desired.…”

Section: Resultsmentioning

confidence: 98%

“…An increase in TA, associated with high SSC, would probably result in better taste, but this must be demonstrated experimentally. This fruit has an AAC that is higher than most fruits, including citrus fruits (Redgwell and Turner 1986). An additional increase in the AAC could contribute to the commercial success of this new crop.…”

Section: Mots Clésmentioning

confidence: 98%

“…Titratable acidity was determined by titrating diluted juice extracted with a domestic juice extractor with 0.025 N NaOH. Results were expressed as anhydrous citric acid (g 100 g -1 ) as this is the main acid in pepino (Redgwell and Turner 1986). Ascorbic acid concentration was immediately determined in juice extracted as for TA using metaphosphoric acid extraction and 2,6-dichlorophenolindolephenol dye reduction.…”

Section: Characters Controlledmentioning

confidence: 99%

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Strategies for breeding a new greenhouse crop, the pepino (Solanum muricatum Aiton)

Prohens¹,

Nuez²

1999

Can. J. Plant Sci.

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Strategies for breeding a new greenhouse crop, the pepino (Solanum muricatum Aiton). Can. J. Plant Sci. 79: 269-275. The introduction of pepino (Solanum muricatum Aiton) as a new greenhouse crop relies on the development of clones that produce high fruit yields with an increased soluble solids concentration (SSC). We have evaluated two breeding strategies aimed at obtaining new, improved clones of this heterozygous vegetatively propagated crop: selection in the segregating generation F 1 (hybrids) or in the first generation of selfing (selfings). We recorded the total yield, SSC, fruit weight, shape, firmness, titratable acidity and ascorbic acid concentration in seven populations of hybrids and in five populations of selfings. Four populations of clonal replicates were used to estimate environmental variability. Total yield and its heritability were higher in the hybrids than in the selfings. Expected responses to selection showed that it might be possible to select clones with a yield higher than 80 t ha -1 with selection pressures lower than 5% in some hybrid populations. Heritabilities for SSC were moderate, but clones with a SSC higher than 9.0 ºBrix could be selected. We also found an important variation in the other characters studied, indicating that improved clones could be selected for all of them. Values for genotypic correlations between characters were very variable. In most hybrid populations, however, we did not find negative genotypic correlations between yield and fruit quality characters. Our results indicate that new hybrid clones of pepino that exceed present clones in yield and fruit quality might be obtained. Deux stratégies de sélection ont été comparées quant à leurs possibilités de produire de nouveaux clones de cette culture hétérozy-gote à multiplication végétative: sélection dans la génération ségrégante F 1 (hybrides) ou dans la première génération d'autofé-condation (S 1 ). Nous notions le rendement total, la CES, le poids, la forme et la fermeté des fruits, l'acidité titrable (AT) et les concentrations d'acide ascorbique (CAA) dans sept populations d'hybrides et dans cinq populations de plantes autofécondées. Quatre populations de répétitions clonales étaient utilisées pour estimer la variabilité environnementale. Le rendement total et son héritabilité étaient plus importants parmi les hybrides que parmi les lignées autofécondées. Les réponses attendues à la sélection montrent qu'il serait possible de sélectionner des clones produisant d'avantage que 80 t ha -1 avec des pressions de sélection inférieures à 5 % dans certaines populations hybrides. Les indices d'héritabilité des CES étaient moyens, mais on pourrait sélec-tionner les clones possédant des CES supérieurs à 9,0ºBrix. Nous avons également observé une importante variabilité pour les autres caractères étudiés, ce qui suggère que des clones améliorés pourraient être sélectionnés quant à tous ces caractères. Les corrélations génotypiques entre caractères étaient très variables. Dans la plupart des populations hybrides, toutef...

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Section: Resultsmentioning

confidence: 68%

Section: Resultsmentioning

confidence: 98%

Section: Mots Clésmentioning

confidence: 98%

Section: Characters Controlledmentioning

confidence: 99%

See 2 more Smart Citations

Strategies for breeding a new greenhouse crop, the pepino (Solanum muricatum Aiton)

Prohens¹,

Nuez²

1999

Can. J. Plant Sci.

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“…[2,12,13] S. muricatum (sweet pepino) is used as a diuretic, and for the treatment of hypotension. [14,15] This study was conducted to evaluate the antimicrobial activities of vegetable fern, chayote and sweet pepino against a panel of pathogenic bacteria (Staphylococcus aureus, Bacillus cereus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli, and Acinetobacter baumannii ) and fungi (Candida albicans, Candida parapsilosis, Issatchenkia orientalis, Cryptococcus neoformans, Aspergillus brasiliensis and Trichophyton mentagrophytes).…”

Section: Introductionmentioning

confidence: 99%

Antifungal and antibacterial properties of three medicinal plants from Malaysia

Shing¹,

Wen²,

Wei³

et al. 2013

Phcog Commn

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Introduction: The increase of opportunistic fungal infections and the escalation of bacterial resistance have seriously reduced the efficacy of chemotherapeutic agents available. Thus the search for new antimicrobial agents from natural sources such as medicinal plants becomes necessary. Methods: The aerial parts of Diplazium esculentum and Sechium edule, and the fruits of Solanum muricatum were used, and extracted sequentially using hexane, chloroform, ethyl acetate, ethanol, methanol, and water. The extracts were then evaluated, in triplicate, against a panel of 12 medically-important microorganisms for microbiostatic and microbiocidal activities using colorimetric broth microdilution methods. Results: The total percentage yield obtained were 1.20%, 1.84% and 3.53% (w/w, based on fresh weight) for D. esculentum, S. edule and S. muricatum, respectively. All plant extracts showed antifungal activity with 66% and 49% of the bioassays demonstrating fungistatic and fungicidal activity, respectively. Two yeasts, Cryptococcus neoformans and Issatchenkia orientalis were found to be susceptible to all extracts. The lowest minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) was exhibited by the hexane extracts of S. edule and S. muricatum against C. neoformans, both with values of 0.08 mg/mL. In the antibacterial screening assays, 49% of the bioassays exhibited bacteriostatic activity while only 21% of them showed bactericidal activity. The lowest MIC and minimum bactericidal concentration (MBC) was recorded for the hexane extract of S. muricatum against Bacillus cereus and Klebsiella pneumoniae, both with values of 0.31 mg/mL. The susceptibility of bacteria towards the plant extracts evaluated was species-dependent, with the susceptibility indices ranging from 0% for Escherichia coli to 72% for Pseudomonas aeruginosa. Conclusions: The results from this study show that extracts from these plants have significant antimicrobial activity, which corroborates their use in traditional medicine.

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Developmental and Ripening-Related Effects on the Cell Wall of Pepino (Solanum muricatum) Fruit

O’Donoghue¹,

Somerfield²,

Vre³

et al. 1997

J. Sci. Food Agric.

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Several cell wall components in ripening pepino fruit have been quantitatively and qualitatively characterised, with the aim of identifying their contributions to the loss of tissue firmness. Pepinos were graded into nine groups based on progressive, characteristic skin colour changes, previously shown to correspond with decreasing fruit firmness. While fruit softening began when the pepinos were still green but with newly acquired purple stripes, the first significant quantitative signs of cell wall modification (total pectin and hemicellulose content declining and CDTA‐soluble pectin content increasing, on a fresh weight basis) were detectable later in ripening, when the fruit began to acquire yellow skin pigmentation. Gel fractionation studies demonstrated that there were increased levels of low‐molecular‐weight pectin and xyloglucan during pepino ripening. The change in molecular weight distribution of CDTA‐soluble pectin occurred as fruit started to acquire yellow pigmentation, while xyloglucan polymers were modified at an earlier stage that coincided with the initial loss of firmness. © 1997 SCI.

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Pepino (solanum muricatum): Chemical composition of ripe fruit

Cited by 37 publications

References 7 publications

Strategies for breeding a new greenhouse crop, the pepino (Solanum muricatum Aiton)

Strategies for breeding a new greenhouse crop, the pepino (Solanum muricatum Aiton)

Antifungal and antibacterial properties of three medicinal plants from Malaysia

Developmental and Ripening-Related Effects on the Cell Wall of Pepino (Solanum muricatum) Fruit

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