Tag Archives: fruit weight

583-588 H. Jänes, P. Ardel, K. Kahu, K. Kelt and A. Kikas
Some biological properties and fruit quality parameters of new sweet cherry cultivars and perspective selections
Abstract |

Some biological properties and fruit quality parameters of new sweet cherry cultivars and perspective selections

H. Jänes, P. Ardel, K. Kahu, K. Kelt and A. Kikas

Polli Horticultural Research Centre, Institute of Agricultural and EnvironmentalSciences, Estonian University of Life Sciences, 69108 Karksi–Nuia, Estonia;e-mail: pille.ardel@pma.agri.ee

Abstract:

Twelve Estonian sweet cherry cultivars: ‘Anu’, ‘Arthur’ (control), ‘Elle’, ‘Ene’, ‘Irma’, ‘Kaspar’, ‘Mupi’, ‘Tontu’, ‘Elo’, ‘Jaago’, ‘Taki’, ‘Tiki’ and two selections: Polli 2–1 and Polli 4–13 as well as two introduced cultivars ‘Iputj’ (Russia) and ‘Jurgita’ (Lithuania) were evaluated for yield, ripening time, fruit weight and biochemical characteristics during 2007–2009 at the Polli Horticultural Research Centre. Results showed that the earliest ripening among the all studied genotypes was ‘Elo’ (16.06), while the latest one was Polli 2–1 (29.07). Average of the three years yields ranged from 6.0 kg per tree for cultivar ‘Jurgita’ to 20.1 kg per tree for cultivar ‘Arthur’. The largest fruits showed cultivars ‘Iputj’ (6.5 g) and ‘Jurgita’ (6.0 g), followed by ‘Arthur’, ‘Anu’ and ‘Mupi’ while the smallest fruits showed ‘Elo’ (3.2 g). The average °Brix value in fruit juice varied by the genotypes from 14.6 (‘Tiki’) to 19.6 (‘Anu’), average of all the genotypes was 17.1. The average total acids content ranged from 0.50% in ‘Iputj’ to 0.75% in ‘Ene’ while the total sugar content ranged from 7.7% in ‘Jurgita’ to 11.2% in ‘Arthur’. The ascorbic acid content ranged from 13.8 mg 100 g-1 in ‘Jaago’ to 24.8 mg 100 g-1 in ‘Anu’. The sugar:acid ratio was considerably high in ‘Iputj’, ‘Kaspar’, ‘Arthur’, ‘Anu’ and ‘Mupi’ (from 17.9 to 20.3). The most attractive were fruits of the cultivars ‘Iputj’, ‘Jurgita’, ‘Mupi’ and ‘Arthur’ (from 4.7 to 4.8 points).

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363-368 J. Lanauskas, A.Valiuškaitė, N. Kviklienė, A. Sasnauskas and N. Uselis
Assessment of apple cultivars for organic fruit cultivation
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Assessment of apple cultivars for organic fruit cultivation

J. Lanauskas, A.Valiuškaitė, N. Kviklienė, A. Sasnauskas and N. Uselis

Lithuania, Lithuanian Institute of Horticulture, Orchard management department, Kauno 30,LT-54333 Babtai, Kaunas distr., Lithuania; e-mail j.lanauskas@lsdi.lt

Abstract:

In 2005–2008 apple tree cultivars and selections were tested at the Lithuanian Institute of Horticulture in an organic apple tree orchard. Apple trees on rootstock B.396 were spaced at distances of 4 x 2 m; the orchard floor was a cultivated soil. The bioinsecticide Bioshower against aphids was applied once a year, fungicides were not used. Apple trees of cultivars. ‘Pilot’ and ‘Pinova’ were significantly affected by apple scab (Venturia inaequalis Cke. Wint), and ‘Lodel’ – by apple powdery mildew (Podosphaera leucotricha (Ellis et Everh.) Salm).Apple trees of the cultivar. ‘Aldas’ and selection 18501 were the most vigorous. In 2007–2008 the greatest average yield was from the cultivars ‘Florina’, ‘Rosana’, selections 20,490 and 22,1709.1–14.7 t ha-1. These same cultivars and selections were the most yield efficient. The greatest average fruit weight was from cultivar. ‘Witos’ (272 g), the smallest from the cultivars ‘Pilot’, ‘Pinova’, ‘Goldrush’ and ‘Lodel’ (111–137 g). The highest taste score was from ‘Goldstar’, ‘Rubinola’, ‘Topaz’, ‘Rajka’ and ‘Lodel’ apples.

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