1-Methylcyclopropene (1-MCP) and dynamic controlled atmosphere (DCA) applications under elevated storage temperatures: Effects on fruit quality of 'Elstar', 'Jonagold' and 'Gloster' apple (Malus domestica Borkh.)

2015 ◽  
Vol 80 (1) ◽  
pp. 25-32 ◽  
Author(s):  
D. Köpcke ◽  
2007 ◽  
Vol 87 (4) ◽  
pp. 593-599 ◽  
Author(s):  
Robert Veberic ◽  
Peter Zadravec ◽  
Franci Stampar

2005 ◽  
pp. 39-43
Author(s):  
József Racskó ◽  
Miklós Soltész ◽  
Lejla Budai ◽  
Zoltán Szabó ◽  
Ervin Farkas ◽  
...  

The authors studied the effect of rootstocks with different growing vigour on fruit quality of different cultivars. Research results shows that best fruit diamter and fruit weight of all cultivars are for M9 rootstock. Similar tendency was found in skin colour, but in the case of Granny Smith, MM106 rootstock is more favourable because the green skin colour is necessary for the consumers’ acceptance. Seedling rootstok has some unfavourable effects on fruit quality, thus its usage is not expedient.


Author(s):  
K.P. Tarnavska ◽  

The author has presented the results the yield and fruit quality of 21 introduced apple varieties of winter ripening in the conditions of Podillia. By the results of the five-year studying (2016-2020) of the studied varieties their estimation was carried out according to the complex of such qualities as early ripening, productivity, marketability, tast qualities and durability of fruits. The following introduced cultivars are difined to be the best: Graf Ezzo, Siabrina, Selena, Nadzieiny. The most early fruiting variety in the experiment was Siabrina (in the first year of growth in the orchard). At the age of two – ‘Angold’, ‘Ariwa’, ‘Beni Shogun Fuji’, ‘Graf Ezzo’, ‘Goldrush’, ‘Imant’, ‘Cameo’, ‘Nadzieiny’, ‘Rumiany Alpinist’, ‘Selena’, ‘Honeycrisp’ and control varieties Idared and Askolda began to bear fruit. At the latest (in the fourth year after planting in the garden) came into commercial fruiting plants varieties Pink Lady and Red Chief. The yield of five- nine-year old trees of the best varieties reaches 18,2-24,7 t/ha. The fastest growing yields at the age of two or six and fruiting annually trees varieties Siabrina, Selena, Angold, Ligol, Beni Shogun Fuji. The yield of the highest and first grade fruits in the best varieties Graf Ezzo, Siabrina, Selena, Nadzeiiny in 2016-2020 was 26-48 %. The lowest (19-24 %) this indicator was in the varieties Angold, Imant, Ligol, Fuji Kiku. Fruits of the best grades are more than the average sizes (Nadzieiny, Siabrina, Selena) and big (Graf Ezzo), average one-dimensionality, excellent, very harmonious sour-sweet taste (7,8-8,4 points), except for the Nadzeiiny grade (6,7 points). Apples of the best varieties were stored for 4-5 months. The fruits of control varieties Idared, Askolda and varieties Ariwa, Garant, Rubinola, Topaz, Fuji Kiku, Hillwell Braeburn were stored the longest (6-7 months).


Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4622
Author(s):  
Piotr Kowalik ◽  
Tomasz Lipa ◽  
Zenia Michałojć ◽  
Mirosława Chwil

Calcium is one of the most poorly reutilized nutrients. Its deficiencies cause various physiological disturbances and, consequently, reduce the quantity and quality of yields. Reduced content of Ca2+ ions in cells leads to development of, e.g., bitter pit in apples. Efficient and instantaneous mitigation of Ca2+ deficiencies is provided by foliar feeding. There are no detailed data on the effect of foliar feeding with various calcium forms on the cell structure or on the microanalysis and mapping of this element in apple fruit cells. Therefore, we carried out comparative studies of the ultrastructure of epidermis and hypodermis cells, to assess the content and distribution of calcium in the cell wall, cytoplasmic membrane, cytoplasm, and precipitates of Malus domestica Borkh. ‘Szampion’ fruit exposed to four Ca treatments, including the control with no additional Ca supplementation (I) and foliar applications of Ca(NO3)2 (II), CaCl2 (III), and Ca chelated with EDTA (IV). Light and transmission electron microscopy and an X-ray microanalyzer were used and showed a beneficial effect of calcium preparations on the ultrastructure of fruit epidermis and hypodermis cells, manifested in the presence of a normally developed cell wall with a regular middle lamella, preserved continuity of cytoplasmic membranes, and stabilized cell structure. In the selected elements of apical epidermis cells, the highest level of Ca2+ ions was detected in the middle lamella, cell wall, plasmalemma, and cytoplasm. The highest increase in the Ca2+ content in these cell constituents was recorded in treatment IV, whereas the lowest value of the parameters was noted in variant III.


PLoS ONE ◽  
2012 ◽  
Vol 7 (5) ◽  
pp. e36674 ◽  
Author(s):  
Satish Kumar ◽  
David Chagné ◽  
Marco C. A. M. Bink ◽  
Richard K. Volz ◽  
Claire Whitworth ◽  
...  

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