Template-Type: ReDIF-Article 1.0 Author-Name: Jan Wolf Author-Workplace-Name: Department of Fruit Science, Faculty of Horticulture in Lednice, Mendel University in Brno, Brno, Czech Republic Author-Name: Martina Göttingerová Author-Workplace-Name: Department of Fruit Science, Faculty of Horticulture in Lednice, Mendel University in Brno, Brno, Czech Republic Author-Name: Jiří Kaplan Author-Workplace-Name: Department of Genebank, Research and Breeding Institute of Pomology Holovousy Ltd., Holovousy, Czech Republic Author-Name: Tomáš Kiss Author-Workplace-Name: Department of Fruit Science, Faculty of Horticulture in Lednice, Mendel University in Brno, Brno, Czech Republic Author-Name: Rostislav Venuta Author-Workplace-Name: Fruit nursery Rostislav Venuta in Kadov, Kadov, Czech Republic Author-Name: Tomáš Nečas Author-Workplace-Name: Department of Fruit Science, Faculty of Horticulture in Lednice, Mendel University in Brno, Brno, Czech Republic Title: Determination of the pomological and nutritional properties of selected plum cultivars and minor fruit species Abstract: This study included twenty-three samples of minor fruit species and twenty-three plum cultivars. First of all, the pomological properties of the plum cultivars were assessed, where the cultivar 'Aphrodite' was determined as the cultivar with the biggest fruits (56.6 g). The selected nutritional properties were subsequently determined in all forty-six samples. The highest value of the total soluble solids in the plums was 27.3 % in 'Stanley' (Prunus domestica) and 26.1 % in 'Krasavica' (Sorbus aucuparia) in the minor fruits; the highest total content of ascorbic acid in the plums was 83.3 mg/100 g in 'Stanley' (P. domestica) and 622.9 mg/100 g in 'Krasavica' (S. aucuparia) in the minor fruits; the highest total phenolic content in the plums was 429.8 mg GAE/100 g in 'Fortune' (Prunus salicina) and 45.3 mg GAE/100 g in the minor fruits and 983.9 mg GAE/100 g in 'Vydubecký' (Cornus mas); the highest total flavonoid content in the plums was 291.5 mg CE/100 g in 'Fortune' (P. salicina) and 544.7 mg CE/100 g in 'Nero' (Sorbus melanocarpa) in the minor fruits, and the highest total antioxidant activity in the plums was 809.5 mg TE/100 g in the hybrid 'SLE2014/2' (P. domestica × P. salicina) and 849.8 mg TE/100 g in 'Amfora' (Lonicera edulis) in the minor fruits. Keywords: vitamin C, antioxidant activity, Japanese plum, European plum, phenols Journal: Horticultural Science Pages: 181-193 Volume: 47 Issue: 4 Year: 2020 DOI: 10.17221/18/2020-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/18/2020-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-202004-0001.txt Handle: RePEc:caa:jnlhor:v:47:y:2020:i:4:id:18-2020-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: Aleksandra Trzewik Author-Workplace-Name: Research Institute of Horticulture, Skierniewice, Poland Author-Name: Teresa Orlikowska Author-Workplace-Name: Research Institute of Horticulture, Skierniewice, Poland Author-Name: Waldemar Kowalczyk Author-Workplace-Name: Research Institute of Horticulture, Skierniewice, Poland Author-Name: Robert Maciorowski Author-Workplace-Name: Research Institute of Horticulture, Skierniewice, Poland Author-Name: Agnieszka Marasek-Ciołakowska Author-Workplace-Name: Research Institute of Horticulture, Skierniewice, Poland Author-Name: Evelyn Klocke Author-Workplace-Name: Julius Kühn-Institut, Quedlinburg, Germany Title: Stimulation of ex vitro growth of Rhododendron hybrids 'Nova Zembla' and 'Alfred' by inoculation of roots with Serendipita indica Abstract: Experiments were carried out to study the consequences of inoculating Rhododendron 'Nova Zembla' and 'Alfred' microcuttings and young plants with Serendipita indica (formerly Piriformospora indica), an endophytic fungus. The inoculation at the in vitro rooting stage decreased the in vitro root and shoot quality, but after planting microplants in a greenhouse in a non-fertilised peat substrate, the plants grew 33% taller, with 10% more leaves and with more abundant roots in comparison with the non-inoculated microplants. The young plants rooted in vitro, acclimated in a greenhouse in a peat substrate and inoculated with S. indica at the time of the transplantation to the pots displayed, after 15 months, an increase in the shoot lengths by 35% and 13%, depending on the cultivar, in the leaf number by 47% and in the chlorophyll content by 31% when compared with the non-inoculated plants. The beneficial effect of S. indica on the young Rhododendron plants indicates the possibility of its practical use in the nursery production of this plant. Keywords: endophyte, growth stimulation, micropropagation, Rhododendron, roots colonisation Journal: Horticultural Science Pages: 194-202 Volume: 47 Issue: 4 Year: 2020 DOI: 10.17221/7/2020-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/7/2020-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-202004-0002.txt Handle: RePEc:caa:jnlhor:v:47:y:2020:i:4:id:7-2020-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: Beata Janowska Author-Workplace-Name: Department of Ornamental Plants, Dendrology and Pomology, Faculty of Agronomy, Horticulture and Bioengineering, Poznań University of Life Sciences, Poznań, Poland Author-Name: Roman Andrzejak Author-Workplace-Name: Department of Phytopathology, Seed Science and Technology, Faculty of Agronomy, Horticulture and Bioengineering, Poznań University of Life Sciences, Poznań, Poland Author-Name: Tomasz Kosiada Author-Workplace-Name: Department of Phytopathology, Seed Science and Technology, Faculty of Agronomy, Horticulture and Bioengineering, Poznań University of Life Sciences, Poznań, Poland Title: The influence of fungi of the Trichoderma genus on the flowering of Freesia refracta Klatt 'Argentea' in winter Abstract: The flowering and quality of Freesia refracta Klatt 'Argentea' were assessed after the application of fungi of the Trichoderma genus and assimilation lighting. The assimilation lighting accelerated the flowering of the Freesia refracta 'Argentea' plants by 3-4 weeks. The fungi of the Trichoderma genus accelerated the flowering of the Freesia refracta 'Argentea' plants with light deficit by about one week. The assimilation lighting resulted in the development of shorter main inflorescence shoots regardless of the fact whether the plants had been treated with the fungi of the Trichoderma genus or not. The assimilation lighting and the fungi of the Trichoderma genus stimulated the development of lateral inflorescence shoots in the 'Argentea' cultivar. The fungi of the Trichoderma genus stimulated the development of flowers in the 'Argentea' cultivar. This effect was particularly noticeable when the plants were exposed to the assimilation lighting. The assimilation lighting stimulated the uptake of potassium in the 'Argentea' cultivar. The fungi of the Trichoderma genus stimulated the uptake of phosphorus and calcium in the plants underexposed to light. They also stimulated the uptake of potassium in the plants exposed to the assimilation lighting. The assimilation lighting stimulated the uptake of microelements. The fungi of the Trichoderma genus stimulated the uptake of iron, manganese and zinc both in the plants exposed to the assimilation lighting and those underexposed to light. The assimilation lighting combined with the treatment with the fungi of the Trichoderma genus stimulated the uptake of copper. Keywords: geophytes, Trichoderma, flowering, micro- and macro-elements Journal: Horticultural Science Pages: 203-210 Volume: 47 Issue: 4 Year: 2020 DOI: 10.17221/35/2019-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/35/2019-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-202004-0003.txt Handle: RePEc:caa:jnlhor:v:47:y:2020:i:4:id:35-2019-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: Jolien Smessaert Author-Workplace-Name: Laboratory for Fruit Breeding and Biotechnology, University of Leuven, Leuven, Belgium Author-Name: Gaby Van Kemenade Author-Workplace-Name: Plant Conservation and Population Biology, University of Leuven, Leuven, Belgium Author-Name: Anneleen Arnoys Author-Workplace-Name: Laboratory for Fruit Breeding and Biotechnology, University of Leuven, Leuven, Belgium Author-Name: Olivier Honnay Author-Workplace-Name: Plant Conservation and Population Biology, University of Leuven, Leuven, Belgium Author-Name: Wanness Keulemans Author-Workplace-Name: Laboratory for Fruit Breeding and Biotechnology, University of Leuven, Leuven, Belgium Title: A preliminary evaluation of the effects of pollinator enhancement and gibberellins on the fruit set and fruit shape of 'Conference' pears - Short Communication Abstract: 'Conference' (Pyrus communis L.) is a self-incompatible cultivar, although it can also set fruit parthenocarpically. Stimulating parthenocarpy through gibberellin (GA) applications increases the fruit set, but it may also negatively affect the fruit size and shape. The aim of this study was to investigate the effects of a bumblebee (BB) amendment in combination with a GA treatment on the fruit set and fruit shape of 'Conference' pears. In the first experiment, we applied three treatments (GA, GA + BB & control) in a 'Conference' monoculture. In the second experiment, we applied two treatments (GA & GA + BB) in a 'Conference' orchard inter-planted with 'Concorde' as pollinizer trees. Both experiments showed that the GA application and bumblebee supplementation did not affect the fruit set. However, the BB treatment resulted in significantly higher amounts of normally shaped pears. Trees closer to the bumblebee hive had more normal shaped pears than trees further away. Keywords: Bombus spp., bumblebees, phytohormones, polliniser trees, Pyrus communis L Journal: Horticultural Science Pages: 211-216 Volume: 47 Issue: 4 Year: 2020 DOI: 10.17221/123/2019-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/123/2019-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-202004-0004.txt Handle: RePEc:caa:jnlhor:v:47:y:2020:i:4:id:123-2019-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: Gabriel Castro Author-Workplace-Name: Instituto de Conservación y Mejora de la Agrodiversidad, Universitat Politècnica de València (COMAV-UPV), Valencia, Spain Author-Name: Gorka Perpiñá Author-Workplace-Name: Instituto de Conservación y Mejora de la Agrodiversidad, Universitat Politècnica de València (COMAV-UPV), Valencia, Spain Author-Name: Belén Picó Author-Workplace-Name: Instituto de Conservación y Mejora de la Agrodiversidad, Universitat Politècnica de València (COMAV-UPV), Valencia, Spain Author-Name: Cristina Esteras Title: 'Mini PS': A new mini melon breeding line exploiting the "Dudaim" variability - Short Communication Abstract: 'Piel de Sapo' is one of the most consumed market class of melons in the Mediterranean area and it represents an important economic crop in Spain. The 'Mini PS' melon breeding line, which bears two main introgressions from the dudaim 'Queen's pocket' melon in the Piel de Sapo genetic background, was evaluated for its fruit quality traits in three environments. Some interesting commercial characteristics were detected, such as a notable decrease in the fruit weight and a rounder shape, compared with Piel de Sapo, while the other quality traits were not altered. Thus, this mini melon line, ideal as a personal melon, may be useful in the development of new melon cultivars. Keywords: uality traits, Cucumis melo, breeding, fruit shape, fruit weight Journal: Horticultural Science Pages: 217-220 Volume: 47 Issue: 4 Year: 2020 DOI: 10.17221/86/2019-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/86/2019-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-202004-0005.txt Handle: RePEc:caa:jnlhor:v:47:y:2020:i:4:id:86-2019-HORTSCI