Template-Type: ReDIF-Article 1.0 Author-Name: J. Goliáš Author-Workplace-Name: Horticultural Faculty, Mendel University of Agriculture and Forestry Brno, Lednice, Czech Republic Author-Name: A. Němcová Author-Workplace-Name: Horticultural Faculty, Mendel University of Agriculture and Forestry Brno, Lednice, Czech Republic Author-Name: P. Mýlová Author-Workplace-Name: Horticultural Faculty, Mendel University of Agriculture and Forestry Brno, Lednice, Czech Republic Title: Ethylene production in apple infected by Gleosporium album Ostrw. at cold storage Abstract: In ten cultivars of apple fruit, ethylene production expressed in μl/kg/h was determined. The cultivar Resista exhibited a higher ethylene production and can be differentiated from other cultivars. The production ranged from 4.2 ± 0.58 μl/kg/h in the case of Meteor cv. up to 131.6 ± 5.5 μl/kg/h in Resista cv. Infected fruit of Topaz cv. had a lower ethylene production at cold storage temperature (3°C) than some healthy fruit. All examined cultivars can be divided into three clusters. Discriminant analysis and canonical correlation analysis of the examined apple fruit led to the determination of healthy and infected fruit. Values of ethylene production were analyzed on intact fruit by using headspace gas analysis by CGC with thermal desorption technique. Carbosieve G was chosen as the adsorbent material for the traps due to its relatively high affinity for light hydrocarbons such as ethylene. For a full trap of ethylene in the enrichment column the sufficient amount of percolating gas is about 0.3 l. Keywords: Gleosporium rot, apple fruit, ethylene production, headspace gas analysis, cultivars Journal: Horticultural Science Pages: 1-6 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3732-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3732-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0001.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3732-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: J. Polák Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Author-Name: J. Svoboda Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Title: The reliability of detection and the distribution of Apple chlorotic leafspot virus in pears in the Czech Republic Abstract: The distribution of Apple chlorotic leafspot virus in pear cultivars in selected orchards of three different districts in the Czech Republic was evaluated by ELISA. The same procedure of DAS - ELISA as in apple trees, was used for the detection of ACLSV in pear trees. The detection of ACLSV in pear flower petals by ELISA was more sensitive than the ACLSV detection in leaves. ACLSV was detected in pear leaves in the reliable way only in June. The presence of ACLSV was not proved by ELISA in nine tested pear rootstocks. The different distribution of ACLSV was detected in pear cultivars Lucasova máslovka and Boscova lahvice grown in different orchards. Low occurrence of ACLSV was found in cultivars Konference, Pařížanka and Dicolor. ACLSV was not detected in cultivars Madame Verté and Bohemica. Keywords: pear, orchards, Apple chlorotic leafspot virus, distribution, flower, cultivars and rootstocks, ELISA Journal: Horticultural Science Pages: 7-10 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3733-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3733-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0002.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3733-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: G. Juhásová Author-Workplace-Name: Institute of Forest Ecology SAS Zvolen, Branch of Woody Plants Biology Nitra, Slovak Republic Author-Name: K. Adamčíková Author-Workplace-Name: Institute of Forest Ecology SAS Zvolen, Branch of Woody Plants Biology Nitra, Slovak Republic Author-Name: M. Kobza Author-Workplace-Name: Institute of Forest Ecology SAS Zvolen, Branch of Woody Plants Biology Nitra, Slovak Republic Title: Sphaeropsis tip blight disease of Austrian pine in urban greenery Abstract: An extent of the damage of Austrian pine trees was evaluated in urban greenery in selected sites in Slovak Republic during the years 2004-2005. Fungi Sphaeropsis sapinea (Fr.: Fr.) Dyko & B. Sutton (syn. Diplodia pinea (Desm.) J. Kickx fil) and Pestalotia sp. were diagnosed on all observed trees. Symptoms of the disease were recorded. S. sapinea was isolated successfully from needles and from cone scales. The growth rate of hyphae of mycelium and the mean daily growth were evaluated on three types of cultivated media at different temperatures. The highest mean daily growth of mycelium was recorded on maltose agar at 25°C after 24 hours of cultivation (31.7 mm). Conidia of S. sapinea and Pestalotia sp. on water agar began to germinate after 3 and 2 hours, respectively. After 6 hours the mean germination rate of conidia of S. sapinea was 81.75% (from cone) and 89.3% (from needles); for Pestalotia it was 88.5%. Keywords: Sphaeropsis sapinea, Pinus nigra, Pestalotia, Slovak Republic Journal: Horticultural Science Pages: 11-15 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3734-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3734-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0003.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3734-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: E. Duman Author-Workplace-Name: Department of Horticulture, Faculty of Agriculture, University of Ondokuz Mayis, Samsun, Turkey Author-Name: U. Serdar Author-Workplace-Name: Department of Horticulture, Faculty of Agriculture, University of Ondokuz Mayis, Samsun, Turkey Title: Research on shortening the nursery period in grafted chestnut Abstract: The objective of this study was to determine the effects of inverted radicle and hypocotyl grafting methods on potted nursery tree production in chestnut. The study was carried out in greenhouse conditions in 2003-2004. Newly germinated chestnut seeds and young seedlings of SA 5-1 genotype were used as rootstocks and sprouts with dormant buds of the same genotype were used as scions. Graftings were done at three periods from April to June. Graft success and scion shoot growth were examined to determine a suitable method and time of grafting. It was found in the study that potted chestnut nursery trees could be produced in one year using either of the grafting methods. Better graft success and survival ratio were obtained from inverted radicle grafting. In this method, graft success was 83.6% in 2003 and 96.7% in 2004. Keywords: chestnut, Castanea sativa, inverted radicle grafting, hypocotyl grafting, nursery period, graft success, juvenile grafts Journal: Horticultural Science Pages: 16-22 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3735-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3735-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0004.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3735-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: R. Cangi Author-Workplace-Name: Faculty of Agriculture, Gaziosmanpaşa University, Tokat, Turkey Author-Name: D. A. Atalay Author-Workplace-Name: Faculty of Agriculture, Dicle University, Diyarbakir, Turkey Title: Effects of different bud loading levels on the yield, leaf and fruit characteristics of Hayward kiwifruit Abstract: The effects of different levels of bud loading on the yield and some leaf and fruit characteristics in Hayward cultivar (A. deliciosa) in the province of Ordu, Turkey were examined during two growing seasons in 2000-2001. Six years old kiwifruit vines were pruned to carry the loads of 120, 180, 240 or 300 buds/vine on the canes with 12 buds. The study determined probable total leaf area (PTLA), probable total leaf number (PTLN), probable total leaf weight (PTLW) and yield per vine. Mean fruit weight (MFW) and soluble solid contents (SSC, %) of fruits were expressed. In addition, unit leaf area/100 g fruit weight (ULA/FW) was calculated. Leaf characteristics were examined in 3 periods of the growing season. Correlations between yield, leaf and fruit characteristics and treatments were determined. The result of the experiment, namely mean leaf area (MLA), mean leaf weight (MLW), PTLA, PTLN, PTLW ranged between 185.51-194.17 cm2, 7.98-8.67 g, 21.047-58.61 m2/vine, 1,129.6-3,035.3 number/vine, 9.04-25.68 kg/vine, respectively. The mean yields of vines loaded with 120 and 300 buds were 34.84 and 100.96 kg/vine (12.19 and 35.34 ton/ha), respectively. Mean leaf area and mean leaf weight increased with increasing levels of bud loading, whereas MFW and ULA/FW decreased. There was a negative relationship between MFW, SSC and yield, and a positive relationship between MLA, PTLA and yield. ULA/FW ratio was between 581.88-611.54 cm2 according to the bud loading level. Fruit size diminished as a consequence of dense canopies in both levels of bud loading (120 and 300 buds/vine). Unit leaf area per fruit weight ranged between 581.88-611.54 cm2/100 g, with respect to the bud loading applications. Increasing levels of bud loading resulted in reduced ULA/FW ratio and affected yield and some leaf and fruit characteristics. Keywords: kiwifruit, Actinidia deliciosa, Hayward, pruning, fruits, leaf area, characteristics, bud loading Journal: Horticultural Science Pages: 23-28 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3736-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3736-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0005.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3736-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: A. Bhargava Author-Workplace-Name: Division of Genetics and Plant Breeding, National Botanical Research Institute, Lucknow, India Author-Name: S. Shukla Author-Workplace-Name: Division of Genetics and Plant Breeding, National Botanical Research Institute, Lucknow, India Author-Name: B. S. Dixit Author-Workplace-Name: Lipid Metabolism Laboratory, National Botanical Research Institute, Lucknow, India Author-Name: R. Bannerji Author-Workplace-Name: Lipid Metabolism Laboratory, National Botanical Research Institute, Lucknow, India Author-Name: D. Ohri Author-Workplace-Name: Division of Genetics and Plant Breeding, National Botanical Research Institute, Lucknow, India Title: Variability and genotype × cutting interactions for different nutritional components in Chenopodium album L. Abstract: Thirteen germplasm lines of vegetable Chenopodium (C. album) were evaluated in a randomized block design with three replications to estimate the foliage yield and its seven contributing quality traits for three successive cuttings. The variability present in vegetable Chenopodium and interactions operating at various levels were also studied. The mean foliage yield was maximum for CA-II (3.03 ± 0.39 kg/plot), followed by CA-VII (2.94 ± 0.27 kg/plot) and CA-VI (2.41 ± 0.20 kg/plot). Moisture content showed a constant decrease in all germplasm lines with successive cuttings except for CA-IX in 3rd cutting. Protein content exhibited a strong trend of increase with each successive cutting and was maximum in 3rd cutting. Protein content showed the highest heritability in 1st cutting (96.35%) while the values were highest for ascorbic acid in 2nd and 3rd cutting. The carotenoid content and ascorbic acid exhibited consistently high genetic gain in all the three cuttings. Keywords: Chenopodium album, foliage yield, carotenoids, protein, ascorbic acid, interactions Journal: Horticultural Science Pages: 29-38 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3737-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3737-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0006.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3737-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: H. Çelik Author-Workplace-Name: Department of Horticulture, Faculty of Agriculture, University of Ondokuz Mayis, Samsun, Turkey Author-Name: H. Zenginbal Author-Workplace-Name: Department of Horticulture, Faculty of Agriculture, University of Ondokuz Mayis, Samsun, Turkey Author-Name: M. Özcan Author-Workplace-Name: Department of Horticulture, Faculty of Agriculture, University of Ondokuz Mayis, Samsun, Turkey Title: Enhancing germination of kiwifruit seeds with temperature, medium and gibberellic acid Abstract: Germination responses to temperature, medium and gibberellic acid (GA3) treatments were studied in kiwifruit (Actinidia deliciosaChev. cv. Hayward) seeds. The seeds treated with four GA3concentrations (0, 2,000, 4,000 and 6,000 ppm) were sown in trays with peat moss, perlite + heater humus and soil mixture and subjected to the temperatures of 20°C, 25°C, 30°C and 35°C with bottom heating, under controlled conditions. All the treatments significantly affected the kiwifruit seeds germination. Seeds sown in peat moss and subjected to the temperature of 35°C with bottom heating reached the maximum germination percentage (99.17%). Peat moss and 6,000 ppm GA3 treatment also had a high germination rate (79%). Moreover, peat moss caused an earlier start of germination than the other mediums and shortened the germination period. Keywords: kiwifruit seed, PGR, temperature, medium, germination Journal: Horticultural Science Pages: 39-45 Volume: 33 Issue: 1 Year: 2006 DOI: 10.17221/3738-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3738-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200601-0007.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:1:id:3738-HORTSCI