Analyzing Fruit Tree Architecture: Implications for Tree Management and Fruit Production

Costes, Evelyne; Lauri, Pierre‐Éric; Regnard, Jean‐Luc

doi:10.1002/9780470767986.ch1

Cited by 121 publications

(105 citation statements)

References 179 publications

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“…The relationship between inflorescence size, sex ratio, fruit maturation (yield) (Negussie et al 2014), and plant architecture is important. For instance, in apple and pear trees the reproductive and vegetative branches are different (Costes et al 2006), while for coffee trees the branches bearing flowers and fruit grow horizontally from the stem (van der Vossen and Herbert 1985; Cilas et al 2006). In coffee shorter internode length, without a reduction in the numbers of fruit per cluster is also a selection criteria for higher yielding cultivars (Gichimu and Omondi 2010).…”

Section: Introductionmentioning

confidence: 99%

Tree or shrub: a functional branch analysis of Jatropha curcas L.

Tjeuw¹,

Mulia²,

Slingerland³

et al. 2015

Agroforest Syst

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Jatropha curcas is an oil-bearing semievergreen shrub or small tree with potential as a source of sustainable biofuel, yet information regarding vegetative and fruit biomass in relation to plant architecture is lacking. Research conducted in Indonesia used the tree based functional branch analysis (FBA) model as a non-destructive method to estimate above and belowground biomass, and plant architecture. The FBA utility for shrubs was unknown and required modification. This research used destructive measurements to validate modifications to the FBA model that included subcategorisation of the tapering coefficient for twig, branch, and wood diameter classes, and addition of a fruit load parameter in the distal link. The modified FBA model confirmed jatropha to be a shrub rather than a tree, producing variable estimates for aboveground biomass. This variation was due to morphological plasticity in the length-diameter relationship of the branches that diverged from fractal branching architecture. Fruit biomass variation between replicates was not well estimated and total proximal root diameter was a poor predictor of total root biomass, due to the proximal roots having enlarged water storage structures that do not follow fractal branching assumptions. Jatropha fruit was shown to predominate on twigs with a diameter between 0.9 and 1.4 cm. Understanding the correlation between fruit development and plant architecture will be necessary for fine-tuning the FBA model for future commercial breeding and selection. The high degree of morphological plasticity displayed by jatropha requires consideration when determining plant biomass.

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Section: Introductionmentioning

confidence: 99%

Tree or shrub: a functional branch analysis of Jatropha curcas L.

Tjeuw¹,

Mulia²,

Slingerland³

et al. 2015

Agroforest Syst

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“…Plant architecture is a key issue for the understanding of many aspects of plant ecology and is also one of the most important traits for the characterization and monitoring of fruit trees [1]. This is especially important in fruit breeding programs aimed at developing new cultivars adapted to specific growing systems [2].…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Airborne UAV Imagery to Assess Olive Tree Crown Parameters Using 3D Photo Reconstruction: Application in Breeding Trials

et al. 2015

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Abstract:The development of reliable methods for the estimation of crown architecture parameters is a key issue for the quantitative evaluation of tree crop adaptation to environment conditions and/or growing system. In the present work, we developed and tested the performance of a method based on low-cost unmanned aerial vehicle (UAV) imagery for the estimation of olive crown parameters (tree height and crown diameter) in the framework of olive tree breeding programs, both on discontinuous and continuous canopy cropping systems. The workflow involved the image acquisition with consumer-grade cameras on board a UAV and orthomosaic and digital surface model generation using structure-from-motion image reconstruction (without ground point information). Finally, geographical information system analyses and object-based classification were used for the calculation of tree parameters. Results showed a high agreement between remote sensing estimation and field measurements of crown parameters. This was observed both at the individual tree/hedgerow level (relative RMSE from 6% to 20%, depending on the particular case) and also when average values for different genotypes were considered for OPEN ACCESS Remote Sens. 2015, 7 4214 phenotyping purposes (relative RMSE from 3% to 16%), pointing out the interest and applicability of these data and techniques in the selection scheme of breeding programs.

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“…Among traditional methods of orchard management and cultural practices applied in an orchard to control growth and fruiting, branch bending has proved the most successful. Branch bending is a long established and widely used as a-cultural practice in high-density orchards, and its concept has nowadays been integrated into the Solaxe training system (Costes et al, 2006). "Le Conte" pear is considered a popular fruit in the temperate regions and in addition, it represents an important share of the cultivars grown in Egypt.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shoot Bending, Shoot Girdling and GA3 Application Treatments on Growth, Fruit Set %, Yield and Fruit Quality of "Le Conte" Pear

2012

Alexandria Science Exchange Journal: An International Quarterly

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The present investigation was carried out in private orchard at south El-Tahreer region, EL Behera governorate, on 5-years-old "Le Conte" pear trees (Pyrus communis L.× Pyrus pyrifolia N.) budded on (Pyrus betulaefolia) rootstock, during two growing seasons (2009 and 2010). The aim of this research was to study the effect of shoot bending, shoot girdling and GA 3 application on the vegetative growth, yield and fruit quality.The results indicated that gibberellic acid (GA 3 ) application and shoot bending three years old treatments induced significant increment in leaf area, spurs number, fruit set %, number of fruits per tree, total yield (ton / fed.), fruit weight, fruit size, fruit length, fruit diameter, fruit firmness, total soluble solids (TSS %) and total sugars compared with that of the control in both seasons of study. Shoot girdling (3y.) significantly gave the highest increase of spurs number, number of fruits per tree, fruit weight, fruit size, fruit firmness, total soluble solids (TSS %) and the reducing sugars, while, it gave significant decrease in fruit acidity % in both seasons of study.

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Analyzing Fruit Tree Architecture: Implications for Tree Management and Fruit Production

Cited by 121 publications

References 179 publications

Tree or shrub: a functional branch analysis of Jatropha curcas L.

Tree or shrub: a functional branch analysis of Jatropha curcas L.

High-Resolution Airborne UAV Imagery to Assess Olive Tree Crown Parameters Using 3D Photo Reconstruction: Application in Breeding Trials

Effect of Shoot Bending, Shoot Girdling and GA3 Application Treatments on Growth, Fruit Set %, Yield and Fruit Quality of "Le Conte" Pear

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