Reduction of apple tree height (Malus domestica Borkh) cv. Ultra Red Gala/MM111 does not decrease fruit yield and quality

2011 ◽  
Vol 130 (1) ◽  
pp. 191-196 ◽  
Author(s):  
J.A. Yuri ◽  
M. Ibarra-Romero ◽  
J.L. Vásquez ◽  
V. Lepe ◽  
J. González-Talice ◽  
...  
Keyword(s):  
Malus Domestica ◽  
Apple Tree ◽  
Tree Height ◽  
Fruit Yield ◽  
Malus Domestica Borkh ◽  
Yield And Quality

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.

Effect of four different canopy shapes on apple yields

1996 ◽  
Vol 36 (4) ◽  
pp. 489 ◽  
Author(s):  
JE Campbell ◽  
HI Nicol ◽  
BR Cullis
Keyword(s):  
Malus Domestica ◽  
Fruit Yield ◽  
Early Years ◽  
Tree Size ◽  
Malus Domestica Borkh ◽  
Training Systems ◽  
Individual Training

The cultivars, Jonathan, Delicious and Granny Smith apple (Malus domestica Borkh.) trees on MM.106, Northern Spy, Seedling and MM.102 rootstocks were trained as-vase, central leader, palmette and Hawkes Bay multi-leade; systems for 18 years. Rootstock significantly affected tree size, and there were interactions of rootstock with training systems or cultivars. There was also an interaction between training ' systems and cultivars. In the early years, while the training systems were being established, fruit yield was inversely related to the severity of the pruning; central leader- and palmette-trained trees had higher yields and tree efficiency than Hawkes Bay trees whose yields and tree efficiency were higher than vase trees. When yields reached maximum and the training systems became well established (after about 8 years of cropping), the total annual yield and tree efficiency per tree of individual training systems within a cultivar and rootstock differed only slightly. Cumulative yields of central leader, palmette and Hawkes Bay were higher than vase in the early years of all training systems and cultivars, while tree size was often smaller. In the latter years, cumulative yields of the central leader, palmette and Hawkes Bay systems remained slightly higher than vase, except with the less vigorous Jonathan and Granny Smith/ MM.102 combinations where yields were similar.

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