Horticultural Science, 2018 (vol. 45), issue 3
Effect of some bioproducts on the growth, yield and fruit quality of apple treesOriginal Paper
Walid Fediala Abd El-Gleel Mosa, Lidia Sas Paszt, Mateusz Frąc, Paweł Trzciński, Michał Przybył, Waldemar Treder, Krzysztof Klamkowski
Hort. Sci. (Prague), 2018, 45(3):111-118 | DOI: 10.17221/75/2017-HORTSCI 
hese experiments began with the planting of maiden apple trees of cv. 'Topaz' in 2011. In springtime in 2012-2016, chemical fertilisation (NPK) and various natural bioproducts, namely Fertigo, Micosat, Humus UP, Humus Active + Aktywit PM, Aktywit PM, BioFeed Quality, BioFeed Amin, Vinassa, Florovit Natura and Florovit Eko were applied to the apple trees alone or enriched with Pantoea sp., Pseudomonas fluorescens, Klebsiella oxytoca and Rhizobium bacterial species. Growth, yield and fruit quality parameters were then evaluated. Our results reveal that the trunk cross-sectional area was greatly increased by the addition of...
Cold hardiness of peach flowers at different phenological stagesOriginal Paper
László Szalay, Imre Gergő Gyökös, Zsuzsanna Békefi
Hort. Sci. (Prague), 2018, 45(3):119-124 | DOI: 10.17221/146/2016-HORTSCI
At the colder peach production regions it is important to know the cold hardiness of peach cultivars at different phenological stages of flowering. In our experiment, artificial freezing tests were conducted in a climate chamber in five selected years between the period of 2007 and 2016 to determine the freeze tolerance of generative organs of three peach cultivars ('Venus', 'Redhaven', 'Piroska'
Does dikegulac affect in vitro shoot proliferation and hyperhydricity incidence in olive explants?Original Paper
Chrysovalantou Antonopoulou, Kortessa Dimassi, Ioannis Therios, Christos Chatzissavvidis
Hort. Sci. (Prague), 2018, 45(3):125-130 | DOI: 10.17221/212/2016-HORTSCI
Dikegulac was tested as a lateral shoot-inducing agent on micropropagated olive (Olea europaea 'Chondrolia Chalkidikis') shoots. Rugini olive medium was supplemented with dikegulac at 0, 16.9, 33.8, 66.7, 100.5 or 133.4 μΜ. Dikegulac was not phytotoxic and the explants treated with 100.5 μΜ had higher number, length, and weight of new shoots. Hyperhydricity (or vitrification) symptoms were diminished by increasing dikegulac concentration in the medium dose (66.7-133.4 μΜ). Also, dikegulac stimulated the production of large amounts of callus at the base of olive explants.
The effect of endogenous hormones on plant morphology and fruit quality of tomato under difference between day and night temperatureOriginal Paper
Xiao Kang Yuan, Zai Qiang Yang
Hort. Sci. (Prague), 2018, 45(3):131-138 | DOI: 10.17221/7/2017-HORTSCI
The difference between day and night temperature (DIF) was reported to influence plant morphology and fruit quality, but the mechanism was poorly known. Therefore, controlled-environment experiments were carried out to investigate the mechanism of DIF influenced plant morphology and fruit quality attributes of tomato during fruit stage. Five day/night temperature regimes 16/34, 19/31, 25/25, 31/19 and 34/16°C with respective DIFs of -18, -12, 0, +12 and +18 at a common 25°C mean daily temperature were used. The results showed that gibberellin 3, indoleacetic acid and zeatin content of stem tip were enhanced significantly by positive DIF and inhibited...
Influence of mulching on gherkins at two levels of irrigationOriginal Paper
Vojtěch Ptáček, Martin Koudela, Josef Sus, Jitka Doležalová
Hort. Sci. (Prague), 2018, 45(3):139-144 | DOI: 10.17221/200/2016-HORTSCI
The field experiments described here were conducted over a period of three years. The effect of mulching on emergence, phenophase, the weight of single fruits and yield of the 'Elisabet F1' and 'Harriet F1' cultivars of gherkins were evaluated, using wheat straw, black non-woven fabric and Ekocover paper mats as mulch compared to a non-mulched control variant. A positive effect of mulching on emergence was found using non-woven fabric at a reduced level of irrigation. The use of non-woven fabrics (21.01 t/ha) and wheat straw (22.92 t/ha) as mulch positively affected yield compared with the non-mulched variant (20.97 t/ha). Reduced levels of irrigation...
The influence of the cultivation environment on the fragrance of cyclamensOriginal Paper
Naoe Shibusawa, Shigeru Matsuyama, Ryo Ohsawa
Hort. Sci. (Prague), 2018, 45(3):145-155 | DOI: 10.17221/110/2017-HORTSCI
The scent of scented cyclamen flowers weakens when the plants are displayed for long periods, and this phenomenon is affected by the environment in which the plants are displayed. Counteracting environmental effects on scent intensity requires an understanding of floral scent emission during display. Here, we used gas chromatography-mass spectrometry and sensory analysis to evaluate the influence of light intensity on floral scent emission from scented cyclamens kept indoors and in a greenhouse. For the greenhouse cyclamen, odour intensity was nearly constant throughout the study period. In contrast, the odour intensity of the indoor plants had decreased...
Effect of sowing substrate on coverage and rate of weeding of directly sown annual flower bedsOriginal Paper
Tatiana Kuťková, Kristýna Klasová, Martin Dubský, Ivana Barošová
Hort. Sci. (Prague), 2018, 45(3):156-163 | DOI: 10.17221/161/2016-HORTSCI
The method of establishing directly sown annual flower beds has its benefits as well as problems. One of them is particularly surface weeding before sowing. The aim of the experiment was to find a solution to this problem, i.e. whether covering sowing substrates can suppress the germination and growth of weeds and improve growth parameters of annuals. The certified seed mixture of annuals and three variants of substrates that differed in ability to retain water were chosen for the experiment. Substrate A contained 70% vol. of sand and 30% vol. of peat; substrate B 50% vol. of sand, 20% vol. of siliceous marlite, 30% vol. of peat; and substrate C 30%...
Heterogeneous response of two bedding plants to peat substitution by two green compostsOriginal Paper
Daniele Massa, Domenico Prisa, Sara Lazzereschi, Sonia Cacini, Gianluca Burchi
Hort. Sci. (Prague), 2018, 45(3):164-172 | DOI: 10.17221/1/2017-HORTSCI
The promotion, at local level, of resource recycling chains, with low environmental impact and costs, appears of great interest for the production of green composts to replace peat in ornamental crops. In this work, two green composts, differing for the criterion of raw material selection for composting, were tested for the cultivation of two bedding plants in comparison with 100% peat based substrate. Leaf chlorophyll (SPAD index), biometric and growth parameters, and tissue mineral composition were measured to assess growing media-plant system performances. Both growing media and plants gave heterogeneous responses depending on substrate characteristics...