Articles
Effect of pruning shape on the photosynthetic characteristics, fruit quality, and yield in Prunus avium L. ‘Jimei’
Article number
1408_42
Pages
301 – 310
Language
English
Abstract
The present study investigated the influence of tree shape on the photosynthetic characteristics, fruit quality, and yield of the sweet cherry (Prunus avium L. ‘Jimei’). The study analyzed the influence of Yangling leaning system (spacing 2 m × (0.8+4.5) m = 1,887 trees ha-1), tall spindle system (spacing 2×4.5 m = 1,111 trees ha-1), and upright fruiting offshoot (UFO) system (spacing 2×4 m = 1,250 trees ha-1) on seven-year-old ‘Jimei’ sweet cherry on ‘Mahaleb CDR-1’ rootstock.
In this study, the tree height was the greatest for the tall spindle system (351.1 cm), followed by UFO (300.5 cm) and Yangling leaning systems (268.6 cm), which was suitable for labor-saving cultivation.
The net photosynthetic rate was the highest for the tall spindle system and the lowest for the Yangling leaning system.
The different tree forms exhibited significant differences in the chlorophyll content of leaves.
Besides, a positive correlation was detected between the chlorophyll content of leaves and the net photosynthetic rate in the three systems (r=0.23). Nevertheless, the yield per hectare was the greatest for the Yangling leaning system, probably due to the significant positive correlation between the leaf area per hectare and the yield per hectare (r=0.9454). The mean fruit weight and soluble solid content were significantly higher in the tall spindle system than in the other two systems.
However, the three treatments showed no significant difference in fruit firmness.
Thus, the findings propose a Yangling leaning system with high planting density, low crown height, convenient picking, and high yield.
In this study, the tree height was the greatest for the tall spindle system (351.1 cm), followed by UFO (300.5 cm) and Yangling leaning systems (268.6 cm), which was suitable for labor-saving cultivation.
The net photosynthetic rate was the highest for the tall spindle system and the lowest for the Yangling leaning system.
The different tree forms exhibited significant differences in the chlorophyll content of leaves.
Besides, a positive correlation was detected between the chlorophyll content of leaves and the net photosynthetic rate in the three systems (r=0.23). Nevertheless, the yield per hectare was the greatest for the Yangling leaning system, probably due to the significant positive correlation between the leaf area per hectare and the yield per hectare (r=0.9454). The mean fruit weight and soluble solid content were significantly higher in the tall spindle system than in the other two systems.
However, the three treatments showed no significant difference in fruit firmness.
Thus, the findings propose a Yangling leaning system with high planting density, low crown height, convenient picking, and high yield.
Publication
Authors
J. Zhang, M. Zhao, Z.Q. Dou, X.Y. Lu, X.R. Chen, W. Xu, T. Liu, Y.L. Cai
Keywords
Prunus avium, ‘Jimei’, pruning, crown shape, photosynthetic characteristics, fruit quality, yield
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