Table 1. Nutrient concentrations in cranberry berry samples from producing plantings (Aluksne,Talsu, Madonas and Riga district) and woodlands (Riga, Jelgava and Saldus district) in Latvia.V.macrocarponV. oxycoccosElementRange Mean ± SE Range Mean ± SEMacroelements (mg·100g -1 fresh berries)N 10.4 – 65.0 40.3 ± 3.38 a 1 13.0 – 78.0 35.1 ± 9.36 aP 6.5 – 11.7 9.1 ± 0.26 a 6.5 – 7.8 6.5 ± 0.13 bK 52.0 – 98.8 79.3 ± 2.08 a 78.0 – 93.6 81.9 ± 1.82 aCa 7.8 – 14.3 10.4 ± 0.39 a 9.1 – 18.2 13.0 ± 1.30 bMg 5.2 – 9.1 6.5 ± 0.13 a 7.8 – 9.1 7.8 ± 0.13 bS 5.2 – 14.3 9.1 ± 0.39 a 6.5 – 18.2 11.7 ± 1.43 aMicroelements (mg·100g -1 fresh berries)Fe 0.22 – 1.17 0.51 ± 0.049 a 0.33 – 0.42 0.36 ± 0.010 bMn 0.06 – 0.57 0,21 ± 0.005 a 2.18 – 3.95 2.78 ± 0.194 bZn 0.07 – 0.17 0,12 ± 0.005 a 0.14 – 0.19 0.16 ± 0.007 bCu 0.04 – 0.08 0.05 ± 0.002 a 0.06 – 0.08 0.07 ± 0.002bMo 0.01 – 0.02 0.01 ± 0.001 a 0.01 – 0.02 0.01 ± 0.001 aB 0.03 – 0.12 0.07 ± 0.005 a 0.10 – 0.17 0.13 ± 0.008 b1 Means with different letters in a row were significantly different (t-Test, p < 0.05)Statistically significant differences (p
The contribution of V. macrocarpon and V. oxycoccus fruits as a dietary source of mineral elementswas estimated from our study results. The potential contribution of 100 g of cultivated and wildcranberries to the Recommended Dietary Allowances (RDA) (USDA RDA chart, 2004) for mineralelements is presented in Table 3.Table 3. Contribution of 100 g of cranberries to the Recommended Dietary Allowance (RDA) foradults per day.RDA*,Element concentrationmg 100 g -1 g fresh fruit% of RDA supplied by 100 gcranberriesElement mg V.macrocarpon V.oxycoccos V.macrocarpon V. oxycoccosP 700 9.1 6.5 1.32 0.97K 2500 79.3 81.9 3.16 3.28Ca 1000 10.4 13.0 1.07 1.31Mg 420 6.5 7.8 1.64 1.93S 850 9.1 11.7 1.06 1.39Fe 8 0.51 0.36 6.33 4.46Mn 2.3 0.21 2.78 9.26 120.96Zn 11 0.12 0.16 1.11 1.49Cu 0.9 0.05 0.07 6.00 7.67Mo 0.045 0.01 0.01 8.89 8.89B 1.5 0.07 0.13 4.73 8.73* USDA RDA chart (2004)Wild and cultivated cranberries supply 9.26 % and even 120.96 %, respectively, of the adult dailyrequirement for Mn. The content of Fe, Cu, Mo, and B in 100 g fresh fruits of both cranberriesstudied also contributes from 4.46 % to 8.89 % of the daily micronutrient requirement. Frommacronutrients only K in V. macrocarpon and V. oxycoccus fruits was found in appreciableamounts (3.16 and 3.28 %, respectively of the RDA). One hundred grams of fresh wild andcultivated cranberries may supply also a few percent of RDA for P, Ca, Mg, S and Zn.The relationship between food and health becomes increasingly significant as consumers nowdemand healthy, tasty and natural foods that have been grown in uncontaminated environments.Numerous studies have shown that among horticultural crops fruits are an important source ofdietary nutrients, especially with respect to minerals (Grusak and DellaPenna, 1999). Among berryfruits, cranberries are considered to be not only an excellent source of phenolic compounds andvitamins, but also as valuable source of mineral nutrients (Ekholm et. al., 2007).Our research revealed statistically significant differences between V. macrocarpon and V.oxycoccus results for P, Ca, Mg, Fe, Mn, Zn, Cu and B in fruit samples and P, K, Ca, Mg, S, Fe,Mn, Zn and B in leaf samples. Nitrogen is the controlling element for American cranberry nutritionand adequate fertilization, in general, is used to maintain renewal growth, crop production, andflower bud development for the next crop (DeMoranville, 1997). However surprisingly similar Nconcentrations were found in the cultivated American cranberry and wild cranberry leaf samples. Itshould be stressed that V. oxycoccos growing medium – sphagnum peat are especially N poor(Stewart and Nilsen 1993). Our research revealed a considerably higher content of Mn in V.oxycoccus leaves (1583.0 mg kg -1 ) in comparison to American cranberry leaves (282.9 mg kg -1 ).This phenomenon could be explained by the different pH of the growing substrata for both speciesstudied. Significantly lower pH and consequentially higher availability of Mn in natural high bogswas found in our previous studies (Karlsons and Osvalde, 2007). Both cranberry fruit Mn contentssupported these differences.Cultivated cranberry fruits had higher content of P and Fe while wild cranberry fruits showed thehighest levels of Ca, Mg, Mn, Zn, Cu and B. The sequences with regard to the content of macroandmicroelements in V. macrocarpon fruits were as K > N > Ca > P = S > Mg and Fe > Mn > Zn69
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Conference Organizing CommitteeChai
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15 Pormale J., Osvalde A. and Nolle
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were established in 1985. Nowadays,
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10,1-15 ha7%15,1-20 ha7%< 20,1 ha0%
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In less than half the surveyed farm
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economical and biochemical characte
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SHORT INFORMATION ABOUT THE HISTORY
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Evaluation of cultivars. After the
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the number of pistils (female clone
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Table 2. Number of flowers per harv
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ResultsFirst time upright dieback i
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grew rapidly on PDA at 20 - 24 o C.
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Figure 9. Conidia of Physalospora v
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References1. CABI, EPPO, (1997) Dia
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Results und DiscussionBerries were
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In literature Caruso eds. and Гop
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the total area under a cranberry ma
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Skilled works on development of the
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Tika atrastas dažas būtiskas ats
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appears to maintain a quite low lev
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8. Garkava - Gustavson L.,Persson H