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1

Yielding and fruit quality of selected sweet cherry (Prunus avium) cultivars in the conditions of central Poland

100%

Szpadzik E. , Krupa T. , Niemiec W. , Jadczuk-Tobiasz E.

Acta Scientiarum Polonorum. Hortorum Cultus

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2019

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tom 18

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nr 3

EN

The study involving 5 cherry cultivars was conducted in 2015–2016. The varieties ‘Techlovan’, ‘Summit’, ‘Sylvia’, ‘Kordia’ and ‘Regina’ were planted in 2010 in the Experimental Orchard of the Department of Pomology in Warsaw-Wilanów on GiSelA5 rootstock. The aim of the study was to evaluate the production value and dessert fruit quality as well as health proprieties of the tested cultivars’ fruits and select the most valuable ones. It was shown that the varieties differed in fruit set and yielding as well as fruit quality (i.e. fruit size, firmness, soluble solid content, acidity) and health benefits (i.e. polyphenol, anthocyanin, and ascorbic acid content). ‘Techlovan’ trees had the lowest yield, but their fruits were of high quality. ‘Kordia’ and ‘Regina’ also provided high quality fruit with high total polyphenol content. In contrast, the ‘Sylvia’ cultivar had a high yield, but the fruit obtained from it was of poor quality. All tested cultivars had similar vitamin C content.

2

Biology of sweet cherry flowering

100%

Lech W. , Malodobry M. , Dziedzic E. , Bieniasz M. , Doniec S.

Journal of Fruit and Ornamental Plant Research

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2008

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tom 16

189-199

3

Wpływ odmiany i podkładki na wzrost i plonowanie czereśni

100%

Kaplan M. , Szot I. , Dobrzanski B. , Baryla B. , Lipa T. , Klimek K.

Acta Agrophysica

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2018

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tom 25

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nr 4

PL

Celem przeprowadzonych badań była ocena wzrostu i plonowania drzew czterech odmian czereśni okulizowanych na dwóch podkładkach. Badania przeprowadzono w latach 2011-2013 w sadzie produkcyjnym zlokalizowanym na terenie Wyżyny Sandomierskiej. Materiał doświadczalny obejmował czereśnie odmian: ‘Kordia’, ‘Regina’, ‘Summit’ i ‘Vanda’ w wieku od 3 do 5 lat, okulizowane na podkładkach: GiSelA 5 i Colt. Wzrost drzew czterech odmian czereśni określony powierzchnią przekroju poprzecznego pni, objętością korony, współczynnikiem intensywności owocowania i produktywności korony istotnie zależał od odmiany i typu zastosowanej podkładki. Drzewa odmiany ‘Summit’ średnio za cały cykl badań plonowały istotnie najlepiej, zaś ‘Kordia’ i ‘Vanda’ istotnie najsłabiej. Drzewa uszlachetniane na podkładce GiSelA 5 charakteryzowały się istotnie mniejszą powierzchnią przekroju poprzecznego pni i objętością korony oraz istotnie większym współczynnikiem intensywności owocowania, produktywności korony oraz średnim plonem za cały cykl badań niż drzewa na podkładce Colt. Istotnie największą masą owocu czereśni i pestek charakteryzowała się odmiana ‘Regina’. Owoce odmian ‘Kordia’ i ‘Regina’ zawierały istotnie więcej ekstraktu niż owoce pozostałych odmian. Nie wykazano istotnego wpływu typu podkładki na masę owocu i pestki, procentowy udział pestki w owocu oraz poziom ekstraktu.

EN

The research objective was assessment of growth and yielding of four cultivars of sweet cherry trees grafted on two rootstocks. The study was carried out over the years 2011-2013 in an orchard located in the Sandomierska Upland area. The research material included four 3 to 5 years old sweet cherry trees of cultivars `Kordia`,`Regina`,`Summit`,`Vanda` budded onto GiSelA 5 and Colt rootstocks. The growth of the four sweet cherry cultivars, estimated by the trunk cross-sectional area, volume of the crown, cropping efficiency coefficient and productivity of the crown, significantly depended on the cultivar and rootstock type. On average, trees of the cultivar ‘Summit’ produced significantly the highest yields throughout the study period, whereas those of cv. ‘Kordia’ and ‘Vanda’ significantly the lowest. The trees grafted on the GiSelA 5 rootstock had significantly decreased trunk cross-sectional area and the crown volume together with significantly higher cropping efficiency coefficient, productivity of the crown and average yielding over the research period, as compared to the trees developed on the Colt rootstock. Significantly the highest fruit and stone weight was determined for the ‘Regina’ cultivar. The sweet cherry fruit of ‘Kordia’ and ‘Regina’ cultivars showed a significantly higher extract content relative to the other cultivars. The rootstock type did not affect significantly sweet cherry fruit and stone weight, stone percentage in fruit, or extract content.

4

Postharvest quality of sweet cherry fruits as affected by bioregulators

88%

Kalajdzic J. , Milic B. , Petres M. , Stankov A. , Grahovac M. , Magazin N. , Keserovic Z.

Acta Scientiarum Polonorum. Hortorum Cultus

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2019

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tom 18

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nr 5

EN

During the cold storage of sweet cherry, severe losses can occur due to the water loss, phytopathogenic fungi and physiological disorders. The aim of this research was to assess the effects of treatments with NAA (α-naphthaleneacetic acid), BA (6-benzyladenine), and GA3 (gibberellic acid) on fruit quality at harvest and after 21 days of storage under two regimes, including 0°C, RH (relative humidity) 90% and 3°C, RH 70%, and after additional shelf life exposure. Sweet cherry cultivars – ‘Summit’, ‘Kordia’ and ‘Regina’ – were treated with bioregulators at the end of flowering. NAA significantly increased the fruit weight at harvest compared to the control in all cultivars assessed. BA stimulated the fruit growth in ‘Kordia’ and ‘Regina’, while it was ineffective in ‘Summit’. GA3 caused significant increase in fruit weight by 8.3% in ‘Kordia’ only. Moreover, BA and GA3 induced a higher firmness of fruits at harvest. Weight loss of fruits during storage at 0°C, RH 90%, was increased with NAA and reduced with GA3 in ‘Regina’ only. BA and GA3 reduced the weight loss of sweet cherry fruits stored at 3°C, RH 70%. Bioregulator treatments increased TA (titratable acidity) in fruits at harvest, while the effects on TA during storage were variable depending on the cultivar. ‘Summit’ had the highest sensitivity to storage fruit rot. BA and GA3 decreased the disease occurrence on fruits stored at 0°C in ‘Summit’ and ‘Kordia’.

5

Cultivar effect on the sweet cherry antioxidant and some chemical attributes

75%

Skrzynski J. , Leja M. , Gonkiewicz A. , Banach P.

Folia Horticulturae

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2016

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tom 28

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nr 1