Template-Type: ReDIF-Article 1.0 Author-Name: editors Title: LIST OF REVIEWERS 2010 Journal: Horticultural Science Pages: I Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/2462-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/2462-HORTSCI.html File-Format: text/html Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:2462-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: J. Schovánková Author-Workplace-Name: Department of Food Preservation and Meat Technology, Institute of Chemical Technology, Prague, Czech Republic Author-Name: H. Opatová Author-Workplace-Name: Department of Food Preservation and Meat Technology, Institute of Chemical Technology, Prague, Czech Republic Title: Changes in phenols composition and activity of phenylalanine-ammonia lyase in apples after fungal infections Abstract: The defensive reaction of apple cultivar Idared (Malus domestica Borkh.) was studied after inoculation with three different pathogens (Penicillium expansum, Monilinia fructigena, and Gloeosporium spp.). Changes in phenolic content and activity of phenylalanine-ammonia lyase were determined after 7, 14, and 21 days after the inoculation. The significant differences were discovered in the progress of rotting after the inoculation. The increase in phenols concentration and in phenylalanine-ammonia lyase activity varied in the place of fungal attack, in the tissues around rotten zone and in the healthy part. The response to the infection was different in the fruit peel and flesh. Very good correlation was found between the activity of phenylalanine-ammonia lyase and total phenol content (r = 0.76-0.98). Keywords: apples, postharvest rot, fungal pathogens, phenolic compounds, phenylalanine-ammonia lyase Journal: Horticultural Science Pages: 1-10 Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/42/2010-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/42/2010-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-201101-0002.txt Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:42-2010-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: J. Blažek Author-Workplace-Name: Research and Breeding Institute of Pomology Holovousy, Ltd., Holovousy, Czech Republic Author-Name: J. Křelinová Author-Workplace-Name: Research and Breeding Institute of Pomology Holovousy, Ltd., Holovousy, Czech Republic Title: Tree growth and some other characteristics of new columnar apple cultivars bred in Holovousy, Czech Republic Abstract: Several characteristics related to tree growth, their fruitage and resistance against scab and powdery mildew were assessed during 2007-2008 on five new cultivars in comparison with the ancestral McIntosh Wijcik, in which 4 out of 5 had their pedigree. In several plots established between 1998 and 2006, the trees, which were on different rootstocks predominantly planted in spacing 4 × 0.5 m, were grown as vertical cordons practically without any pruning or shaping. Besides the first years after the planting these columnar trees generated very limited side branching. The cultivars mutually differ in tree vigour, spurring density, and size of fruiting spurs. Mean annual prolongation of central axes in the case of the trees on vigorous rootstocks varied within 30.8-57.5 cm, however, on M 9 rootstock it was distinctly shorter (23.4-34.1 cm). Beyond cultivar and rootstock the length of the annual prolongation was also significantly influenced by fruit set level. Trees of the Kordona cultivar were generally the most vigorous while those of Pidi were the weakest. The biennial pattern of bearing observed to an extent on nearly all the cultivars was connected with tendency to over-crop the trees. The highest annual yield equal to 10.3 kg was generated on trees of Kordona on MM 106, which corresponds to a total harvest of 25.7 t/ha. Cultivars Herald and Slendera possessed combined resistance both to scab and powdery mildew, whereas Kordona and Cumulus were resistant only to scab, but were in different degrees susceptible to mildew. Keywords: apple, cultivars, columnar growth, tree vigour, yields, scab, powdery mildew, resistance Journal: Horticultural Science Pages: 11-20 Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/23/2010-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/23/2010-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-201101-0003.txt Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:23-2010-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: T. Zichová Author-Workplace-Name: Department of Entomology, Crop Research Institute, Prague, Czech Republic Author-Name: V. Falta Author-Workplace-Name: Department of Entomology, Crop Research Institute, Prague, Czech Republic Author-Name: F. Kocourek Author-Workplace-Name: Department of Entomology, Crop Research Institute, Prague, Czech Republic Author-Name: J. Stará Author-Workplace-Name: Department of Entomology, Crop Research Institute, Prague, Czech Republic Title: Differences in the susceptibility of codling moth populations to Cydia pomonella granulovirus in the Czech Republic Abstract: The Cydia pomonella granulovirus is a very important agent for the biological control of the codling moth, Cydia pomonella, in both organic and integrated apple and pear production. Three populations of Cydia pomonella originating from three separate areas of the Czech Republic were tested for their susceptibility to Cydia pomonella granulovirus in laboratory bioassays at several concentrations of Cydia pomonella granulovirus. A sensitive laboratory strain was chosen as a control. The larval mortality was checked 14 days after the infection. The mortality of Cydia pomonella larvae was similar in specimens originating from both the wild populations and the laboratory strain. Decreased susceptibility to Cydia pomonella granulovirus was demonstrated neither in samples from locality without Cydia pomonella granulovirus treatment nor from a locality experimentally treated with Cydia pomonella granulovirus for several years during the registration process. However, one population experimentally treated for more than 10 years was partially resistant to Cydia pomonella granulovirus. Based on our findings; the Cydia pomonella granulovirus biopesticides will be efficient due to the high susceptibility of field codling moth populations to Cydia pomonella granulovirus in the Czech Republic. Keywords: codling moth, Cydia pomonella granulovirus, resistance, biological control, baculovirus Journal: Horticultural Science Pages: 21-26 Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/26/2010-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/26/2010-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-201101-0004.txt Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:26-2010-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: A.A. Malik Author-Workplace-Name: State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China Author-Name: Li Cui Author-Workplace-Name: State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China Author-Name: Shuxia Zhang Author-Workplace-Name: State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China Author-Name: Jin-Feng Chen Author-Workplace-Name: State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China Title: Efficiency of SSR markers for determining the origin of melon plantlets derived through unfertilized ovary culture Abstract: The effects of temperature pre-treatment, thidiazuron, naphthaleneacetic acid, and 6-benzylaminopurine on in vitro gynogenic plant production from un-pollinated melon (Cucumis melo L.) ovaries were investigated. Simple sequence repeat (SSR) marker analysis was conducted to identify the homozygous diploid individuals. The temperature pre-treatment (4°C) for 4 days increased embryo formation frequency (63.3%) significantly. Addition of thidiazuron (0.04 and 0.02 mg/l) in the induction medium significantly increased the number of responding ovaries (46.6%, 65.83%), respectively. The maximum number of plantlet regeneration (22.5%) was achieved by culturing the ovary derived embryos on Murashigue and Skoog medium (MS medium) supplement with 0.6 mg/l 6-benzylaminopurine. Spontaneous doubled haploids originated directly through embryogenesis were subjected to genetic analysis using SSR molecular marker with 23 primers pair for homozygosity. SSR markers with microsatellite CMGA172, confirmed that the alleles in the parental material were also present in the gynogenic plantlets, but amplified only two alleles as compared to four alleles of the heterozygous parent material at same locus. Therefore these regenerated plantlets were consider homozygous and produced through a process of gametophytic embryogenesis. Keywords: Cucumis melo L., in vitro gynogenesis, embryo formation, microsatellites markers Journal: Horticultural Science Pages: 27-34 Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/47/2010-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/47/2010-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-201101-0005.txt Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:47-2010-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: F. Larcher Author-Workplace-Name: Department of Agronomy, Forest and Land Management, Faculty of Agriculture, University of Turin, Turin, Italy Author-Name: A. Berruti Author-Workplace-Name: Department of Agronomy, Forest and Land Management, Faculty of Agriculture, University of Turin, Turin, Italy Author-Name: P. Gullino Author-Workplace-Name: Department of Agronomy, Forest and Land Management, Faculty of Agriculture, University of Turin, Turin, Italy Author-Name: V. Scariot Author-Workplace-Name: Department of Agronomy, Forest and Land Management, Faculty of Agriculture, University of Turin, Turin, Italy Title: Reducing peat and growth regulator input in camellia pot cultivation Abstract: Regulating plant development plays an important part in Camellia japonica L. pot production. Cultivation usually occurs on peat-based substrate and growth control is performed with triazoles application. However, there is an increasing need for suitable peat alternatives and more effective protocols. This study evaluated the effectiveness of three different dosages (50, 100, 200 mg/l) and two application protocols (foliar spray, once or twice) of paclobutrazol on two C. japonica cultivars grown on eight different substrate mixtures. The substrates were composed of four peat substitutes (local green compost, pumice, composted coconut peat, and pine bark) mixed with the standard substrate at 30-40% by volume. Treated plants showed reduction in most of the growth-related parameters, enhancement of ornamental value and an overall plant health improvement. Basically, one application of paclobutrazol 50 mg/l was sufficiently active. Among substrates, pine bark appeared to be a suitable partial peat alternative. Considering their lower cost and effective performances, pumice and coconut peat proved suitable alternatives, too. Keywords: flowering, plant development, paclobutrazol, ornamental plants, substrates Journal: Horticultural Science Pages: 35-42 Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/70/2010-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/70/2010-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-201101-0006.txt Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:70-2010-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: I. Ozturk Author-Workplace-Name: Department of Horticulture, Faculty of Agricultural Sciences, Aarhus University, Aarslev, Denmark Author-Name: C.O. Ottosen Author-Workplace-Name: Department of Horticulture, Faculty of Agricultural Sciences, Aarhus University, Aarslev, Denmark Author-Name: C. Ritz Author-Workplace-Name: Department of Basic Sciences and Environment/Statistics, Faculty of Life Sciences, University of Copenhagen, Frederiksberg, Denmark Author-Name: J.C. Streibig Author-Workplace-Name: Department of Agriculture and Ecology, Faculty of Life Sciences, University of Copenhagen, Taastrup, Denmark Title: Non-linear mixed-effects modeling for photosynthetic response of Rosa hybrida L. under elevated CO2 in greenhouses - Short communication Abstract: hotosynthetic response to light was measured on the leaves of two cultivars of Rosa hybrida L. (Escimo and Mercedes) in the greenhouse to obtain light-response curves and their parameters. The aim was to use a model to simulate leaf photosynthetic carbon gain with respect to environmental conditions. Leaf gas exchanges were measured at 11 light intensities from 0 to 1,400 µmol/m2s, at 800 ppm CO2, 25°C, and 65 ± 5% relative humidity. In order to describe the data corresponding to different measurement dates, the non-linear mixed-effects regression analysis was used. The model successfully described the photosynthetic responses. The analysis indicated significant differences in light saturated photosynthetic rates and in light compensation points. The cultivar with the lower light compensation points (Escimo) maintained a higher carbon gain despite its lower (but not-significant) quantum efficiency. The results suggested acclimation response, as carbon assimilation rates and stomatal conductance at each measurement date were higher for Escimo than Mercedes. Differences in photosynthesis rates were attributed to the adaptive capacity of the cultivars to light conditions at a specific day when the experiments were undertaken. Keywords: miniature rose, irradiance, response curve, carbon assimilation Journal: Horticultural Science Pages: 43-47 Volume: 38 Issue: 1 Year: 2011 DOI: 10.17221/97/2010-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/97/2010-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-201101-0007.txt Handle: RePEc:caa:jnlhor:v:38:y:2011:i:1:id:97-2010-HORTSCI