Template-Type: ReDIF-Article 1.0 Author-Name: J. Blažek Author-Workplace-Name: Research and Breeding Institute of Pomology, Holovousy, Czech Republic Author-Name: J. Křelinová Author-Workplace-Name: Research and Breeding Institute of Pomology, Holovousy, Czech Republic Title: Seven-year orchard performance of eleven new apple cultivars from Holovousy in comparison with some commonly grown ones Abstract: In an orchard trial that was established in the spring of 1999 on M 9 rootstock at the spacing of 4 × 1 m, eleven new apple cultivars bred in Holovousy (Angold, Julia, Nabella, Primadela, Produkta, Resista, Rubinstep, Rucla, Selena, Vysočina and Zuzana) were evaluated in comparison with three standard varieties (Gala, Golden Delicious and Jonagold) and another two with resistance to scab (Rosana and Topaz). In the first three years, the incidence of scab and mildew was evaluated under limited chemical protection. In 2000-2005 on each of 10 randomly selected trees of each cultivar, the time of flowering and optimum harvest ripening were recorded, flower set and fruit sets were rated, yield per tree and weight of 10 fruit samples were measured. Trunk diameter was measured between 2002 and 2005. The early summer apple Julia had the healthiest state and it was recommended for organic growing. Selena was the most precocious, the least vigorous and had the highest crop efficiency. The highest annual yields per tree were recorded with Produkta, but this cultivar had the highest proportion of trees with biennial bearing. Primadela achieved the highest cumulative yields, whereas Angold brought the largest fruits on average. With the obtained results, the evaluated cultivars were characterised by some important features or recommendations for growers. Keywords: apples, cultivars, yields, fruit size, tree vigour, fruit set, time of flowering, time of harvest, yield efficiency, biennial bearing, scab, mildew Journal: Horticultural Science Pages: 131-139 Volume: 33 Issue: 4 Year: 2006 DOI: 10.17221/3752-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3752-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200604-0001.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:4:id:3752-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: C. Tsipouridis Author-Workplace-Name: Pomology Institute (Nagref), Naoussa, Greece Author-Name: D. Almaliotis Author-Workplace-Name: Pomology Institute (Nagref), Naoussa, Greece Author-Name: T. Thomidis Author-Workplace-Name: Pomology Institute (Nagref), Naoussa, Greece Author-Name: A. Isaakidis Author-Workplace-Name: Pomology Institute (Nagref), Naoussa, Greece Title: Effects of different sources of iron, hormones and Agrobacterium tumefaciens on the chlorophyll and iron concentration in the leaves of peach trees Abstract: The aim of this study was to investigate the effect of different sources of iron, hormones and Agrobacterium tumefaciens in the chlorophyll and iron concentration of the peach cultivars Katerina and Fire Blight. The results showed that the concentration of Fe in the leaves was significantly increased after spraying with FeSO4.7H2O (alone or in combination with KNO3, urea, citric acid or ascorbic acid) or with GA3 + Kinetin. Soil applications with Fe-EDDHA also significantly increased the iron concentration in leaves. Chlorophyll (a/b) increased only in trees sprayed with citric acid or H2SO4 60 days after application. SPAD chlorophyll measurements showed that Fe-EDDHA and FeSO4.7H2O + organic matter, applied as soil drench, significantly increased the chlorophyll concentration in leaves of Katerina even up to 120 days after application. Foliar treatments had no significant effect on the SPAD index. SPAD measurements also showed that the concentrations of chlorophyll in leaves of the rootstocks St. Julien 655/2 and wild seedling rootstocks were significantly lower than in GF677 and Antafuel. The rootstocks inoculated with the A. tumefaciens strain Ag-28 alone showed a significantly lower chlorophyll concentration than the uninoculated ones. Keywords: acidic compounds, hormones, iron chlorosis, peach cultivars, rootstocks Journal: Horticultural Science Pages: 140-147 Volume: 33 Issue: 4 Year: 2006 DOI: 10.17221/3753-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3753-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200604-0002.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:4:id:3753-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: V. Kučera Author-Workplace-Name: Research Institute of Crop Production Prague-Ruzyně, Czech Republic Author-Name: V. Chytilová Author-Workplace-Name: Research Institute of Crop Production Prague-Ruzyně, Czech Republic Author-Name: M. Vyvadilová Author-Workplace-Name: Research Institute of Crop Production Prague-Ruzyně, Czech Republic Author-Name: M. Klíma Author-Workplace-Name: Research Institute of Crop Production Prague-Ruzyně, Czech Republic Title: Hybrid breeding of cauliflower using self-incompatibility and cytoplasmic male sterility Abstract: Two self-sterility systems, self-incompatibility (SI) and cytoplasmic male sterility (CMS) were used to verify their suitability for hybrid breeding of cauliflower. The possibility of reproduction of SI and CMS lines in isolation cages using insect pollinators were proved. The best results in reproduction of SI lines derived from the cultivar Montano were achieved by spraying with 3% NaCl solution in the evening and using bumblebees as pollinators. The mean weight of seeds per plant attained approximately 5 g. Two CMS lines bred from cultivars Brilant and Fortuna achieved seed set per plant after honeybee pollination with their fertile analogues 0.8 and 2.0 g, respectively. The yield of F1 seeds in hybridization experiment based on SI was 1.8 grams per plant of SI mother line. In hybridization based on CMS, the yield of F1 seeds per CMS plant was 2.3 grams. The F1 hybrid of SI line Montano × self-pollinating line from cv. Fortuna showed to be the best combination in a preliminary field trial. Keywords: cauliflower, hybrid breeding, self-incompatibility (SI), CMS, reproduction of lines, hybrid seed production Journal: Horticultural Science Pages: 148-152 Volume: 33 Issue: 4 Year: 2006 DOI: 10.17221/3754-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3754-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200604-0003.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:4:id:3754-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: M. Valšíková Author-Workplace-Name: Research Institute of Vegetables, Nové Zámky, Slovak Republic Author-Name: J. Králová Author-Workplace-Name: Research Institute of Vegetables, Nové Zámky, Slovak Republic Author-Name: Š. Barkoci Author-Workplace-Name: Research Institute of Vegetables, Nové Zámky, Slovak Republic Title: Study of some characteristics of vegetable pepper varieties Abstract: In three test years an assortment of 15 varieties of vegetable pepper (Capsicum annuum L.) were grown in field conditions to study experimentally some of their morphological and biological properties. Mean plant height ranged from 435.7 mm (cv. Lastočka) to 636.7 mm (cv. Srbská). The smallest fruits had cultivars Čerešňová and Kecskeszarv with the weight of 4.86 g and 17.68 g. Average weight was the highest at varieties Pola kapia (92.23 g) and Melišor (91.92 g). The biggest length of mature leaves over 100 mm was measured at varieties Dolmy, Podarok Moldavy and Tuba; the smallest leaves according to length and width had variety Čerešňová. The mean vitamin C content in fruits about 2,000 mg/kg at green mature stage was found in cv. Bohatýr, Čerešňová and Podarok Moldavy. The highest vitamin C content in red fruits was analyzed at cv. Čerešňová (2,551.0 mg/kg) and Lastočka (2,422.2 mg/kg). Other observed characteristics were colour, shape and taste of fruits, colour of leaves and fruit wall thickness. Keywords: vegetable pepper, assortment, evaluation Journal: Horticultural Science Pages: 153-157 Volume: 33 Issue: 4 Year: 2006 DOI: 10.17221/3755-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3755-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200604-0004.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:4:id:3755-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: K. Karlová Author-Workplace-Name: Department of Gene Bank, Research Institute of Crop Production Prague-Ruzyně, Workplace in Olomouc, Czech Republic Title: Accumulation of flavonoid compounds in flowering shoots of Achillea collina Becker ex. Rchb. Alba during flower development Abstract: The objective of this paper was a screening of flavonoid content in Achillea collina Becker ex. Rchb. Alba flowering tops (Herba millefolii) and flowers (Flos millefolii). Ten developmental stages of plant (flowers and tops separately) - from the beginning of flower differentiation to ripe seed stage - were studied. The methanol extract of plant material was used for HPLC analysis. The flavones apigenin, luteolin, and their 7-O-glucosides were found as the main flavonoid constituents in all developmental stages of both flower and top drug. Apigenin and apigenin-7-O-glucoside contents have a similar accumulation tendency during ontogenesis - their contents fluently increased until the full flower phase and then they decreased. Maximal apigenin and apigenin-7-O-glucoside content was established to range between 0.6 and 0.7 mg/g in millefolii herba and 0.9 and 1.3 mg/g in millefolii flos. The luteolin content has the same tendency and also quantity as apigenin and the highest value at the full flowering stage was found even stronger. On the other hand, luteolin-7-O-glucoside has the highest content at the stage of small flower bud (about 1.0 mg/g). Its amount decreased later on and it increased to the second maximum at the full flower phase. Keywords: Achillea collina, flavonoids, apigenin, luteolin, HPLC, ontogenesi Journal: Horticultural Science Pages: 158-162 Volume: 33 Issue: 4 Year: 2006 DOI: 10.17221/3756-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3756-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200604-0005.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:4:id:3756-HORTSCI Template-Type: ReDIF-Article 1.0 Author-Name: T. Thomidis Author-Workplace-Name: Pomology Institute (NAGREF), Naoussa, Greece Author-Name: C. Tsipouridis Author-Workplace-Name: Pomology Institute (NAGREF), Naoussa, Greece Title: Evaluation of BC Williams and PI1/6 pear cultivars for their compatibility with 49 quince genotypes and their susceptibility to fire blight: Short communicaton Abstract: In this study, the compatibility of the pear cultivars PI1/6 and BC Williams with 49 quince genotypes was evaluated. The results showed that the cv. PI1/6 had a good compatibility with several of the quince genotypes, and the cv. BC Williams only with a few of them. Differences were also found in their susceptibility to fire blight (Erwinia amylovora). The cultivar PI1/6 was very susceptible, while the cultivar BC Williams was relatively tolerant. Keywords: compatibility, fire blight, pear, PI1/6, quince, Williams Journal: Horticultural Science Pages: 163-166 Volume: 33 Issue: 4 Year: 2006 DOI: 10.17221/3757-HORTSCI File-URL: http://hortsci.agriculturejournals.cz/doi/10.17221/3757-HORTSCI.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/hor-200604-0006.txt Handle: RePEc:caa:jnlhor:v:33:y:2006:i:4:id:3757-HORTSCI