scholarly journals Phenology of apple tree (Malus domestica Borkh.) in Kyiv Oblast in the context of climate change

2015 ◽  
Vol 0 (1-2(26-27)) ◽  
pp. 49-53 ◽  
Author(s):  
Т. Є. Кондратенко ◽  
П. В. Кондратенко
Keyword(s):  
Climate Change ◽  
Malus Domestica ◽  
Apple Tree ◽  
Malus Domestica Borkh

MORPHOLOGICAL CHARACTERISTICS OF STEMS AND ROOTS USED TO DISTINGUISH STANDARD FROM IRRADIATION-INDUCED VARIANT APPLE TREES

1982 ◽  
Vol 62 (2) ◽  
pp. 513-518
Author(s):  
B. J. PARLIMAN ◽  
C. STUSHNOFF
Keyword(s):  
Malus Domestica ◽  
Selection Criteria ◽  
Apple Tree ◽  
Growth Habit ◽  
Morphological Characteristics ◽  
Root Bark ◽  
Apple Trees ◽  
Malus Domestica Borkh ◽  
Gamma Irradiated

Beacon apple tree (Malus domestica Borkh.) variants derived from gamma-irradiated scionwood on Columbia Crab seedling (CC) rootstocks were compared to both standard Beacon/clonal rootstocks, standard Beacon/CC rootstocks and Columbia Crab seedling trees. Stem or root measurements of trees classed as induced spur-type dwarf variants/CC rootstocks had larger bark to xylem ratios than trees from other growth habit classes. Stem and root bark to xylem ratios have the potential to be used as juvenile selection criteria in screening for spur-type dwarf variants in irradiation-exposed apple tree populations.

Apple tree canopy development and photosynthesis as affected by rootstock

1991 ◽  
Vol 69 (2) ◽  
pp. 295-300 ◽  
Author(s):  
Ido Schechter ◽  
D. C. Elfving ◽  
J. T. A. Proctor
Keyword(s):  
Malus Domestica ◽  
Apple Tree ◽  
Net Photosynthesis ◽  
Light Interception ◽  
Tree Canopy ◽  
Seasonal Development ◽  
Hemispherical Photography ◽  
Canopy Development ◽  
Leaf Type ◽  
Malus Domestica Borkh

Trees of apple (Malus domestica Borkh.) with 'Starkspur Supreme Delicious' as the scion grafted on nine different rootstocks (Ottawa 3, M.7 EMLA, M.9 EMLA, M.26 EMLA, M.27 EMLA, M.9, MAC-9, MAC-24, OAR 1) were studied in their 8th and 9th years. Canopy seasonal development and its light interception followed by fisheye (hemispherical) photography showed that rootstock affected the amount of structural wood, the rate of canopy development, and final leaf area. However, rootstock did not affect the sigmoidal pattern of canopy development. Light interception was linearly correlated with tree dimensions and yield. Leaf net photosynthesis (Pn) of trees on dwarfing rootstocks tended to be lower than Pn rates of trees on more vigorous rootstocks. Rootstock did not affect the scion Pn response to different illumination levels. Shoot leaves, spur leaves on spurs without fruit (S − F), and spur leaves on spurs with fruit (S + F) from trees on M.26 EMLA and OAR 1 showed no differences in Pn rates. However, for both rootstocks, shoot leaves had the highest Pn rate, S + F the lowest, and S − F leaves had intermediate values. Key words: light interception, fisheye photography, leaf type.

scholarly journals The Influence of Agrotechnological Tools on cv. Rubin Apples Quality

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 463
Author(s):  
Kristina Laužikė ◽  
Nobertas Uselis ◽  
Giedrė Samuolienė
Keyword(s):  
Ascorbic Acid ◽  
Citric Acid ◽  
Phenolic Compounds ◽  
Malus Domestica ◽  
Apple Tree ◽  
Sugar Content ◽  
High Quality ◽  
Malus Domestica Borkh ◽  
The World

With the growing demand for quality food in the world, there is a new ambition to produce high-quality apples seeking reduced cultivation costs. The aim of this study was to evaluate the influence of agrotechnological tools on the quality of cv. Rubin apples during the harvest. The apple tree (Malus domestica Borkh.) cv. Rubin was grafted on dwarfing rootstocks P60, planted in single rows spaced 1.25 m between trees and 3.5 m between rows. Six agrotechnological tools were used—hand pruning, mechanical pruning, trunk incision, calcium-prohexadione, summer pruning and mechanical pruning one side, changing sides annually. The agrotechnical tools had no significant effect on accumulation of most sugars and elements, malic, folic and succinic acids in the fruits. Mechanical pruning resulted in significant accumulation of phenolic compounds, antioxidants, ascorbic acid, but reduced the amount of glucose compared to hand pruning. However, the trunk incision or spraying with ca-prohexadione together with mechanical pruning had no significant effect on sugar content but resulted in significantly higher amounts of phenols, antioxidants, ascorbic acid, Fe and Mn and reduced starch and citric acid.

scholarly journals The studies on redistribution of boron in apple trees as a result of leaf boron application

2013 ◽  
Vol 51 (1-2) ◽  
pp. 147-155
Author(s):  
Paweł Wójcik
Keyword(s):  
Acid Solution ◽  
Boric Acid ◽  
Malus Domestica ◽  
Apple Tree ◽  
Boric Acid Solution ◽  
High Ability ◽  
Apple Rootstock ◽  
Apple Trees ◽  
Malus Domestica Borkh ◽  
Leaf Boron

Redistribution of boron (B) within apple trees (Malus domestica Borkh.) as a result of leaf B application was examined. The experiments were canied out in a greenhouse on M.26 apple rootstock and in field conditions on five-year-old 'Elstar' and 'Szampion' apple trees grafted on M.26 rootstock. Boron was applied in a form of boric acid solution. It was found that leaf B application resulted in movement of B to leaves, flowers and apple fiuits untreated with B. These results clearly showed that B was retranslocated within apple tree. The retranslocation of B within apple trees took place when leaf B applications were done both in summer and autumn. Additionally, it was observed that B from leaf application had paiticularly high ability of movement within plant at insufficient B content (0,2μM) in solution. Generally, these data indicated that B within apple trees was transported in phloem, however mechanism of this phenomenon has not been well known yet. Thus, leaf B application of apple trees can be more successful treatment in reduction of B deficiency in plants compared to soil B application.

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