CONTENTS

PCo-A analysis of strawberry germplasm used in european breeding programs, based on evaluation of DNA polymorphism of investigated plants 
Anita Kuras, Małgorzata Korbin

Identification of pear cultivars with RAPD and ISSR markers 
Anna Lisek, Elżbieta Rozpara

Phenotypic diversity in a sample of blackcurrant (Ribes nigrum L.) cultivars maintained in the Fruit Breeding Department at the Research Institute of Pomology and Floriculture in Skierniewice, Poland 
Wiesław Mądry, Stanisław Pluta, Leszek Sieczko, Marcin Studnicki

The profile of polyphenols and antioxidant properties of selected apple cultivars grown in Poland
Aleksandra Duda-Chodak, Tomasz Tarko, Paweł Satora, Paweł Sroka, Tadeusz Tuszyński

Polyphenol oxidase activity in selected apple cultivars  
Krzysztof Kołodziejczyk, Joanna Milala, Michał Sójka, Monika Kosmala, Jarosław Markowski –

Chances, perspectives and dangers of GMO in agriculture 
Tomasz Twardowski

The influence of mycorrhizal fungi on the growth and yielding of plum and sour cherry trees  
Sławomir Świerczyński, Aleksander Stachowiak

Effect of plant growth regulators on apple fruit preharvest drop and quality  
Nomeda Kvikliene, Darius Kviklys, Audrius Sasnauskas

The usefulness of dikegulac in propagation of highbush blueberry (Vaccinium corymbosum L.) ‘Herbert’ 
Wojciech Litwińczuk, Agata Prokop

Evaluation of the direct and subsequent influence of a supersorbent polymer on cropping and rate of gas exchange of strawberry (Fragaria ananassa Duch.) ‘Elsanta’ 
Grzegorz Mikiciuk, Małgorzata Mikiciuk

Dynamics of changes of starch and its components in fruitlets and maturing ‘Jonagold’ and ‘Gala Must’ apples 
Maria Gawęda, Jan Ben

The influence of three seedling rootstocks on the growth and fruiting of peach trees in the first years after planting 
Sławomir Świerczyński

Flower and fruit thinning effects on the development and quality of ‘Šampion’ apple fruits 
Iwona Szot

Relations between tree age, fruit load and mean fruit weight 
Waldemar Treder, Augustyn Mika, Danuta Krzewińska

Effect of pruning time on growth, blooming and content of chemical constituents in leaves of four early ripening plum cultivars 
Ireneusz Sosna

Preliminary evaluation of the growth and yield of four Japanese plum cultivars (Prunus salicina Lindl.) grafted on Wangenheim Prune seedlings 
Ireneusz Sosna, Daria Kortylewska

Growth, productivity and fruit quality of ‘Kordia’ sweet cherry trees on eight clonal rootstocks 
Mirosław Sitarek, Zygmunt S. Grzyb

The effect of the rootstock on growth, yielding and fruit quality of three cultivars of sour cherry cultivated in the Warmia region 
Jan Kopytowski, Bogumił Markuszewski

Agrogel usage in cultivation of trees planted in ridges 
Dariusz Dereń, Adam Szewczuk, Ewelina Gudarowska

Productive value of eighteen gooseberry (Ribes grossularia L.) cultivars of different origin evaluated in central Poland 
Stanisław Pluta, Agata Broniarek-Niemiec, Edward Żurawicz

Influence of harvest date and storage conditions on the changes of selected qualitative conditions of ‘Concorde’ pears 
Jan Błaszczyk

Response of ‘Golden Delicious’ apples to postharvest application of 1-methylcyclopropene (1-MCP) in conditions of normal and controlled atmosphere 
Kamil Jeziorek, Mateusz Woźniak, Kazimierz Tomala

Evaluation of mechanical harvest quality of primocane raspberries 
Jacek Rabcewicz, Jan Danek

Assessment of amount of wood from pruned apple orchards as a source of renewable energy 
Jacek Rabcewicz, Paweł Białkowski, Paweł Konopacki

Economics of organic apple and strawberry production in Poland in the years 2007-2009 
Piotr Brzozowski, Krzysztof Zmarlicki

Yielding and healthiness of selected grape cultivars for processing in central Poland 
Jerzy Lisek

Productive value of new foreign strawberry cultivars evaluated in 2007-2010
Agnieszka Masny, Edward Żurawicz

Assessment of big bud mite (Cecidophyopsis ribis Westw.) infestation level of blackcurrant genotypes in the field 
Barbara H. Łabanowska, Stanisław Pluta

Different growth of excised and intact fourth internode after removal of the flower bud in growing tulips: focus on auxin action 
Marian Saniewski, Justyna Góraj, Elżbieta Węgrzynowicz-Lesiak, Hiroshi Okubo, Kensuke Miyamoto, Junichi Ueda

The effects of glucose and growth regulators on the organogenesis of Paeonia lactiflora Pall. in vitro 
Eleonora Gabryszewska

Response of three ornamental plant species to inoculation with arbuscular mycorrhizal fungi depending on compost addition to peat substrate and the rate of controlled release fertilizer
Bożena Matysiak, Grzegorz Falkowski

The use of arbuscular mycorrhizal fungi in container production of selected ornamental conifers under organic-mineral fertilization level 
Grzegorz Falkowski, Bożena Matysiak

Changes of physical properties in rockwool and glasswool slabs during hydroponic cultivation of roses 
Jacek S. Nowak

Recent advances in management and control of Fusarium yellows in Gladiolus species 
Sunita Chandel, Raj Deepika