Horticultural Science, 2003 (vol. 30), issue 3
Changes in quality characteristics of Golden Delicious apples under different storage conditions and correlations between them
J. Blažek, I. Hlušičková, A. Varga
Hort. Sci. (Prague), 2003, 30(3):81-89 | DOI: 10.17221/3867-HORTSCI 
In this four-year study, fruits of Golden Delicious cv. randomly sampled from four different orchards on M 9 were kept at 1 or 2oC in air storage, and in the course of storing individually assessed for weight, skin colour, skin blush, skin waxiness, flesh firmness, vitamin C content, total acid content, pH value, total sugars, dry matter and calcium content. Changes in some of these fruit quality characteristics during storage are presented and compared with their course during storage both in the cellar and ULO. The maximum storage life of the fruits in the air storage was estimated at 150 days on average. From individual fruit data, correlations...
Variability of 21 apricot (Prunus armeniaca L.) cultivars and hybrids in selected traits of fruit and stone
Z. Vachůn
Hort. Sci. (Prague), 2003, 30(3):90-97 | DOI: 10.17221/3868-HORTSCI
Weight, height, width and diameter of fruits and stones were evaluated in 21 apricot cultivars and hybrids in 1994-1997. Statistically significant differences between the measured values of traits confirmed their applicability for objective characterization of genotypes. The evaluated traits are genetic dispositions. It was also proved by the rank of genotypes arranged according to the values of particular traits in one year that was highly significantly identical in the other years of the evaluated period (correlation coefficient r = 0.45++ to 0.87++). The relationship between fruit weight and other traits (stone weight,...
Taxonomic reliability of leaf and fruit morphological characteristics of the Pyrus L. taxa in Slovakia
V. Paganová
Hort. Sci. (Prague), 2003, 30(3):98-107 | DOI: 10.17221/3869-HORTSCI
A population of 1,149 pear individuals from Slovakia is analysed according to their morphological characteristics of fruits and leaves. Three basic taxa were identified - Pyrus pyraster, Pyrus amphigenea and Pyrus nivalis. Qualitative traits (shape of leaf blade, fruit shape, type of leaf or fruit base, etc.) allowed the exact identification of a particular taxon only in some cases. Quantitative characteristics of leaves proved to be more suitable for the identification of analysed taxa. Statistically significant differences were found between all studied taxa in the values of leaf length and width,...
Influence of natural leaf drop and nutritional status of the stock plant on rooting of peach cuttings
C.G. Tsipouridis, T. Thomidis
Hort. Sci. (Prague), 2003, 30(3):108-111 | DOI: 10.17221/3870-HORTSCI
This study showed that rooting is strongly affected by natural leaf drop occurring during cutting collection. Observations carried out during sampling showed that cultivars with more than 80% leaf drop had lower rooting percentages than cuttings from cultivars with leaf drop between 44 to 75%, and that generally, the peaks of leaf drop coincide very closely with low rooting. Besides, it was found that there is a relation between Fe and N content in the bark of cuttings and their rooting. The peaks of Fe content coincide with the peaks of rooting. In contrast, the peaks of N content coincide with the lowest percentage of rooting. Overall, there seems...
Cultivation of Brassica pekinensis under different forms of nitrogen nutrition
L. Ducsay, L. Varga
Hort. Sci. (Prague), 2003, 30(3):112-115 | DOI: 10.17221/3871-HORTSCI
A pot trial was aimed to investigate the effect of different forms of nitrogen fertilizer on the aboveground phytomass yield, vitamin C content and uptake of some macroelements by Brassica pekinensis. The trial was conducted in 2000 and 2001 in pots containing 10 kg of loamy brown soil. Optimized NPK nutrition with the rate of 90.9 kg/ha N increased phytomass yields of Chinese cabbage in all treatments compared to the unfertilized control. The most marked increase (by 55.6%) of yield was obtained when N was applied in the form of (NH4)2 SO4. The yields in the other treatments declined as follows: NH4NO3...
Influence of sodium humate on the yield and quality of green pepper
L. Varga, L. Ducsay
Hort. Sci. (Prague), 2003, 30(3):116-120 | DOI: 10.17221/6003-HORTSCI
In greenhouse conditions a 3-year small-plot experiment was conducted on loamy Chernozem originating from the humus horizon to investigate the effect of sodium humate application on yield, nitrate content and vitamin C content in green pepper fruits. The application of 5 kg of sodium humate per hectare in the form of watering 3 weeks after planting of pepper seedlings under full NPK nutrition (N nutrition was divided as follows: 2/3 of total N before planting and 1/3 of total N together with sodium humate 3 weeks after planting) resulted in a statistically significant increase in pepper yield by 13.6% at a concomitant significant reduction of nitrate...
Flaminia, a self-incompatible peach variety: Short communication
C.G. Tsipouridis, T. Thomidis
Hort. Sci. (Prague), 2003, 30(3):121-122 | DOI: 10.17221/3872-HORTSCI
This study showed that the peach variety Flaminia is self-incompatible in Northern Greece, and it produces fruits only after cross fertilization. Among the peach varieties Doukessa, Fayette, Late Naoussas, Princess Anne and Autumn Free used as pollinators, the peach variety Fayette was found as the best in Northern Greece.