Horticultural Science, 2011 (vol. 38), issue 2

The elimination of Plum pox virus in plum cv. Bluefree and apricot cv. Hanita by chemotherapy of in vitro cultures

A. Hauptmanová, J. Polák

Hort. Sci. (Prague), 2011, 38(2):49-53 | DOI: 10.17221/10/2010-HORTSCI  

In vitro cultures of plum cv. Bluefree and apricot cv. Hanita infected with Plum pox virus (PPV) were used for the virus elimination by chemotherapy. Low ribavirin concentrations of 5 and 10 mg/l in Murashige-Skoog medium were applied in the treatment. Plum pox virus was completely eliminated by 5 mg/l of ribavirin in plum cv. Bluefree within twenty weeks and in apricot cv. Hanita in twelve weeks of the application. Plum pox virus was completely eliminated by 10 mg/l of ribavirin both in plum cv. Bluefree and apricot cv. Hanita within twelve weeks. The presence of PPV was not proved by RT-PCR. Clones of plum cv....

Effect of gamma radiation on the male sterility and other quality parameters of peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae)

M.F. Mahmoud, M. Barta

Hort. Sci. (Prague), 2011, 38(2):54-62 | DOI: 10.17221/88/2010-HORTSCI  

Bactrocera zonata, a serious pest of fruits in many parts of the world, has recently been recorded in Northern Africa. Even though it has not been introduced to the European continent yet, a strong emphasis is being placed on developing effective measures to suppress this pest and to prevent it from establishing in neighbouring European countries. The sterile insect technique is widely used in integrated programmes against tephritid fruit flies and, in this paper, quality parameters of irradiated B. zonata were evaluated for possible use of sterile insect technique within the management of this pest. Pupae were irradiated (60Co) 48...

Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit

O. Rop, V. Řezníček, J. Mlček, T. Juríková, J. Balík, J. Sochor, D. Kramářová

Hort. Sci. (Prague), 2011, 38(2):63-70 | DOI: 10.17221/99/2010-HORTSCI  

The fruit of blue honeysuckle (Lonicera caerulea L. var. kamtchatica (Sevast.) Pojark.) belongs to the fruit of great value because of itsunique chemical composition. The aim of our measurement of this fruit species was to select the cultivars which could be the most suitable food supplement in relation to strengthening human immunity system. The comparison of the fruit of 12 cultivars was made. The highest contents of polyphenolic substances were recorded in the cultivar Zolushka with the value of 9.03 g of gallic acid/kg fresh mass. In particular cultivars the DPPH (2,2-diphenyl-1-picrylhydrazyl) test was performed to determine...

Clonal preselection of grapevine cultivars of the appellation "Cangas Quality Wine" (Asturias, Spain)

M.D. Loureiro, P. Moreno-Sanz, B. Suárez

Hort. Sci. (Prague), 2011, 38(2):71-80 | DOI: 10.17221/87/2010-HORTSCI  

The Asturian vineyard is composed mostly of autochthonous minority cultivars only present in the northwest of Spain. This vineyard is characterized by its antiquity, confusion as to the identity of certain cultivars, lack of certified plant material, and a great number of mixed cultivars in each individual vineyard. With the aim of restoring this viticulture after years of abandonment and improving the quality of its wines, old plants belonging to four red grapevine cultivars (Albarín tinto, Carrasquín, Verdejo tinto, and Mencía) presenting a good sanitary state and adequate yield were selected for clonal preselection. Agronomic and enological data...

Cauliflower qualities in two irrigation levels with the using of hydrophilic agent

M. Koudela, F. Hnilička, L. Svozilová, J. Martinková

Hort. Sci. (Prague), 2011, 38(2):81-85 | DOI: 10.17221/149/2010-HORTSCI  

The aim of this work was to evaluate the influence of a hydrophilic agent (Agrisorb), added to a substrate for seedling cultivation (3 g Agrisorb/l of substrate), on the weight of roots, weight, and height of the aboveground part, the number of leaves and root collar diameter of precultivated cauliflower seedlings (cultivar Chambord F1). Seedlings were planted under two different irrigation levels: optimal with available water capacity 80%, and reduced with 50%. The influence of Agrisorb on the following characteristics of cauliflower edible parts was evaluated after harvest: weight, diameter, percentage representation of marketable parts, market yield,...