Horticultural Science, 2019 (vol. 46), issue 4
Analysis of freezable water content by DSC for apple dormant bud cryopreservationOriginal Paper
Alois Bilavčík, Jiří Zámečník, Miloš Faltus, Petra Jadrná
Hort. Sci. (Prague), 2019, 46(4):163-170 | DOI: 10.17221/146/2018-HORTSCI 
Dormant bud cryopreservation is a valuable tool for the germplasm of temperate trees preservation. Freezable water content, as an important cryopreservation characteristic, was analysed by DSC. Scions of modern apple tree varieties (Malus domestica) were collected during the winter season from orchards, freeze-dehydrated to 26-32% of water content at -5°C and cryopreserved by the two-step procedure. Samples were rehydrated in moist peat after 4 months of cryopreservation and grafted on rootstocks in a field. Regeneration by sprouting buds on rootstocks was evaluated. The varieties were divided into three groups according to their water content...
Leaf pinching and phytohormones - two important components for the branching induction on sweet cherryOriginal Paper
Luděk Laňar, Martin Mészáros, Klára Kyselová, Josef Sus, Jan Náměstek, Hana Bělíková, Patrik Čonka
Hort. Sci. (Prague), 2019, 46(4):171-179 | DOI: 10.17221/12/2019-HORTSCI
The promising branching agent cyclanilide [1-(2,4-dichlorophenylaminocarbonyl)-cyclopropane carboxylic acid] is not permitted in the EU and the low vigour rootstocks preferred by growers make the branching of young sweet cherry (Prunus avium) trees difficult in the temperate zone production regions. To increase the number and length of new branches ("feathers") on such trees, chemical (6-benzyladenine [BA], gibberellic acid [GA4/7]), mechanical (leaf pinching, summer notching) and various combined treatments were tested from 2015-2018. The numbers of feathers divided into three different lengths...
The effect of preharvest 28.6% chitosan composite film sprays for controlling the soft rot on kiwifruitOriginal Paper
Cheng Zhang, You-Hua Long, Qiu-Ping Wang, Jiao-Hong Li, Hua-Ming An, Xiao-Mao Wu, Ming Li
Hort. Sci. (Prague), 2019, 46(4):180-194 | DOI: 10.17221/84/2018-HORTSCI
This study evaluated the effects of preharvest plant 28.6% chitosan composite film (CTS-Fh) sprays on the postharvest quality and diseases in kiwifruit (Actinidia deliciosa cv. 'Guichang'), it was screened and prepared by mixing chitosan, calcium, dextrin, ferulic acid and auxiliaries. 28.6% CTS-Fh solutions at different concentrations were sprayed three times during the fruit growing season. The obtained results show that 28.6% CTS-Fh sprays remarkably promoted the improvement of the yield and quality of the kiwifruit, significantly (P < 0.05) increased the Ca content and firmness, delayed the fruit ripening and softening, and...
The efficacy of European fruit lecanium, Parthenolecanium corni (Bouché, 1844) control using natural productsOriginal Paper
Michal Skalský, Jana Niedobová, Jan Popelka
Hort. Sci. (Prague), 2019, 46(4):195-200 | DOI: 10.17221/215/2017-HORTSCI
European fruit lecanium, Parthenolecanium corni (Bouché, 1844) is among the leading worldwide pests of fruits such as plums, currants, jostaberry, grapevine and many others. This study is focused on testing the effectiveness of natural insecticide treatments compared with conventional insecticides on overwintering nymphs of the European fruit lecanium. In February of 2017, two experiments were conducted under laboratory conditions. The tested products were Boundary SW®
Consumer acceptance of disease tolerant apple cultivarsOriginal Paper
Jonas Inderbitzin, Simone Schütz, Nadine Klein, Markus Kellerhals
Hort. Sci. (Prague), 2019, 46(4):201-207 | DOI: 10.17221/97/2018-HORTSCI
The current study was designed to compare the consumer acceptance of the three Rvi6 scab-resistant apple cultivars 'Rustica', 'Ariane' and 'Ladina' with the two standard disease-susceptible cultivars 'Braeburn' and 'Mariella'. A consumer test with 189 participants, using written questionnaires, was carried out alongside a sensory descriptive analysis with a trained panel. For appearance acceptance 'Ariane' reached the highest score. Three distinct groups of consumers with different visual preferences were found using hierarchical cluster analysis. In terms of eating quality 'Mariella' was liked the most. Yet again, three groups were found,...
Effect of aboveground plant conditioner treatment on arbuscular mycorrhizal colonization of tomato and pepperOriginal Paper
Alena F. Lukács, Gábor M. Kovács
Hort. Sci. (Prague), 2019, 46(4):208-214 | DOI: 10.17221/4/2019-HORTSCI
We aimed to test the hypothesis that treatment with an aboveground plant conditioner has an effect on important vegetable crops inoculated with arbuscular mycorrhizal fungi (AMF) and on their colonization by AMF. Potting experiments were set with pepper and tomato plants inoculated with commercial AMF inoculum and plants were treated with an aboveground plant conditioner. After harvesting, the dry weight of shoots and roots were measured, and the AMF colonization of the roots was quantified. We found a significant effect of the treatment on fungal colonization: the AMF colonization, the hyphal colonization rate and the frequency of the arbuscules in...
Early water stress effects on pollen viability, berry set and embryo development in cv. 'Syrah' (Vitis vinifera L.)Original Paper
Ilknur Korkutal, Elman Bahar, Alain Carbonneau
Hort. Sci. (Prague), 2019, 46(4):215-223 | DOI: 10.17221/110/2018-HORTSCI
Early water deficit at bloom results in poor berry set and/or a grape yield reduction. The purpose of this work was to determine the effects of early water stress in a berry's development. The experiment was carried out in a SupAgro ECOTRON System in Montpellier, France. Seven year- old 'Syrah' vines were used. The pot's surface was protected from rainfall, and the growing medium was perlite+coarse sand with controlled drainage. The treatments were WS0 (control): 4 l/day, WS1: 3 l/day, WS2: 2 l/day, and...