Horticultural Science, 2008 (vol. 35), issue 4
Index of volume 35Index
editors
Hort. Sci. (Prague), 2008, 35(4):X1 | DOI: 10.17221/652-HORTSCI 
A comparison of apple cultivars regarding ethylene production and physico-chemical changes during cold storage
J. Goliáš, P. Mýlová, A. Němcová
Hort. Sci. (Prague), 2008, 35(4):137-144 | DOI: 10.17221/653-HORTSCI
Measurements of titratable acidity, soluble solids, firmness, ethylene production and weight loss were made for five apple cultivars held in cold storage for 100 days. Carbosieve G in the traps of the enrichment column, which has only a moderate affinity for light hydrocarbons, was found to meet the requirements for the optimal thermal desorption of ethylene (130°C for 2 minutes) from the enrichment column to the analytical column. ANOVA showed significant differences in all these five parameters between the five cultivars Golden Delicious Reinders, Resista, Topaz, Meteor and Rubinstep, and also in the course of storage. In all cases, the changes in...
Nutritional quality of Chinese cabbage from integrated culture
R. Pokluda
Hort. Sci. (Prague), 2008, 35(4):145-150 | DOI: 10.17221/19/2008-HORTSCI
The evaluation of nutritional quality of Chinese cabbage and the effects of cultivar, weed incidence, plant density and growing season were observed in integrated cultivation system. Mean contents of analysed compounds were as follows: 6% of dry matter, 10% of crude fibre, (in mg/kg of f.m.): 2,199 mg K, 289 mg Ca, 146 mg Mg, 111 mg Na, and 316 mg of vitamin C. Mean content of nitrates reached the value of 647 mg/kg. A significant effect of cultivar on the content of all observed substances in cabbage heads excluding magnesium was thus confirmed; however, a decrease of nitrates was found in the treatment with higher plant density. Weed cultivation...
Resistance of Chinese asters (Callistephus chinensis Nees.) to Fusarium wilts (Fusarium oxysporum f. sp. callistephi (Beach) Snyder and Hansen) evaluated using artificial inoculations
T. Nečas, F. Kobza
Hort. Sci. (Prague), 2008, 35(4):151-161 | DOI: 10.17221/656-HORTSCI
The resistance of Chinese asters to Fusarium wilt was tested by artificially inoculating the root systems. A mixture of Fusarium isolates was prepared with a concentration of about 104-109 propagules per litre of the pathogen. 63 cultivars of both domestic and foreign origin were evaluated in the 1st year, 95 in the 2nd year and 89 in the 3rd year. Clear, statistically valid differences in mortality, both with experiments involving artificial inoculations and considering natural infections, make it possible to divide aster varieties into three groups based in their resistance to infections....
Determination of Fox grape genotypes (Vitis labrusca L.) grown in Northeastern Anatolia
H. Celik, B. Kose, R. Cangi
Hort. Sci. (Prague), 2008, 35(4):162-170 | DOI: 10.17221/655-HORTSCI
Northeastern part of Anatolia is a gene center of grapevine and a wide diversity of Fox grapes grow here. Viticulture and some grapevines in the Black Sea Region (in the north of Turkey) are on the verge of extinction; several types and varieties grown in this region have never been described and did not survive till present. For the past 10 years vineyards and grapevines in the Black Sea Region have been studied. In the present study, eighteen grapevines of foxy taste grown in the Artvin and Rize provinces were described. An ampelographic description of young shoot, mature shoot, young leaf, mature leaf, berry, bunch and seed were carried out using...
Assessment of pollen viability and germinability in some European chestnut genotypes (Castanea sativa L.)
N. Beyhan, U. Serdar
Hort. Sci. (Prague), 2008, 35(4):171-178 | DOI: 10.17221/23/2008-HORTSCI
Pollen viability and germinability in some European chestnut genotypes was assessed in this study. In 10 chestnut genotypes, percentages of pollen viability were generally high and often around or over 80%. The pollen germination percentages of the genotypes were significantly affected by media sucrose concentrations. At optimum sucrose concentrations pollen germination percentages varied between 21.97 and 43.68% in 2004, 3.95 and 31.97% in 2005 and 6.79 and 31.03% in 2006, across all genotypes. The highest pollen germination percentage was obtained from 10% sucrose concentration in all years. Although, in 2006, a highly marked positive correlation...