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Effect of crop load on fruiting and leaf photosynthesis of 'Braeburn'/M.26 apple trees
Open accessAbstract
Four-year-old apple (Malus x domestica Borkh.) trees cv. 'Braeburn' on M.26 rootstock were thinned at full bloom to establish six crop loads ranging from a heavy crop to a deflowered treatment. At harvest, mean yield per tree varied from 0 to 38 kg and mean fruit weight ranged from 225 g in the heaviest cropping treatment to 385 g in the lightest cropping treatment. Light cropping resulted in a significant advance in fruit maturity as indicated by background color, starch/iodine score and soluble solids. There were small differences in leaf photosynthetic rate among the treatments when shoot growth was active. However, in early January, coincident with cessation of shoot growth and maximum rate of accumulation of fruit weight, leaf assimilation rate was reduced by as much as 65% on the deflowered trees compared to the trees carrying the heaviest crop. Leaf assimilation rate showed a curvilinear response to crop load at this time, with little increase in leaf assimilation when crop load exceeded 12 fruit m(-2) leaf area.
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Citations
Cited by
Apple fruit quality: Overview on pre-harvest factors
Musacchi, S., & Serra, S. (2018) · Scientia Horticulturae · doi:10.1016/j.scienta.2017.12.057 · Cited by 527
Vaast, P., Bertrand, B., Perriot, J., Guyot, B., & Génard, M. (2006) · Journal of the Science of Food and Agriculture · doi:10.1002/jsfa.2338 · Cited by 384
Carbon allocation during fruiting in Rubus chamaemorus
Gauci, R., Otrysko, B., Catford, J.-G., & Lapointe, L. (2009) · Annals of Botany · doi:10.1093/aob/mcp142 · Cited by 14
Metadata
- Authors
- Palmer, J. W., Giuliani, R., & Adams, H. M.
- Venue
- Tree Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1997-11-01
- Volume
- 17
- Issue
- 11
- Pages
- 741-746
- ISSN
- 0829-318X (ISSN-L)
- 1758-4469
- OpenAlex
- W2001895763
- Cited by
- 165
- References
- 0
- FWCI
- 2.83
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Effect of crop load on fruiting and leaf photosynthesis of 'Braeburn'/M.26 apple trees. https://app.cochat.ai/papers/10.1093/treephys/17.11.741
- The paper
- Palmer, J. W., Giuliani, R., & Adams, H. M. (1997). Effect of crop load on fruiting and leaf photosynthesis of 'Braeburn'/M.26 apple trees. Tree Physiology. https://doi.org/10.1093/treephys/17.11.741
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
