2014
DOI: 10.1371/journal.pone.0091016
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Fruit Self-Thinning: A Trait to Consider for Genetic Improvement of Apple Tree

Abstract: In apple (Malus×domestica Borkh), as in many fruiting crops, fruit maintenance vs abscission is a major criteria for production profitability. Growers routinely make use of chemical thinning agents to control total fruit load. However, serious threats for the environment lead to the demand for new apple cultivars with self-thinning properties. In this project, we studied the genetic determinism of this trait using a F1 progeny derived from the cross between the hybrid INRA X3263, assumed to possess the self-th… Show more

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Cited by 33 publications
(24 citation statements)
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“…Our results concerning the effect of high and extremely high fruit set on biennial bearing occurrence are also in agreement with data in existing literature (Guitton et al 2012;Durand et al 2013;Celton et al 2014).…”
Section: Discussionsupporting
confidence: 93%
“…Our results concerning the effect of high and extremely high fruit set on biennial bearing occurrence are also in agreement with data in existing literature (Guitton et al 2012;Durand et al 2013;Celton et al 2014).…”
Section: Discussionsupporting
confidence: 93%
“…It is well known that management practices in the orchard influence tree canopy balance and the production of high apple fruit quality. For this reason, defining the optimal crop load of a new cultivar characterized by the trait of setting one or two fruits per cluster requires a fine-tuning of all the management techniques [7]. In fact, pruning trees helps maintain a sufficient and well-illuminated canopy to act as a source for photosynthate production [8], whereas apple crop load management adjusts the number of sinks to reduce resource competition and have enough carbon for developing fruits [9].…”
Section: Introductionmentioning
confidence: 99%
“…Despite the characterization of the genetic determinism of fruitlet self-thinning (Celton et al, 2014b), the selection of elite cultivars exhibiting this characteristic remains largely empirical. The quasi-systematic acquisition of dominance of central fruitlets over the lateral ones allows the setting up of experimental designs aimed at deciphering the processes involved in the natural acquisition of this dominance and the activation of fruitlet AZ.…”
Section: Discussionmentioning
confidence: 99%
“…If all pedicels of the corymb have amphivasal bundles, the central fruit dominance may not be exacerbated, so what is the tree bearing behavior then? Further investigation should focus on the particular role of these additional bundles and determine how the expression of this characteristic is controlled in a dedicated segregating population, such as the one used by Celton et al (2014b). Such study may confirm whether the selfthinning trait is associated with the presence of amphivasal bundles in the central pedicel only.…”
Section: Central X3177 Fruit Pedicels Contain Additional Amphivasal Vmentioning
confidence: 96%
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