Early Shoot Development Affects Carbohydrate Supply and Fruit Quality of Red-Fleshed Actinidia chinensis var. chinensis ‘Zes008’

Richardson, Annette; Eyre, Victoria; Kashuba, Peggy; Ellingham, Deborah; Jenkins, H. W.; Nardozza, Simona

doi:10.3390/agronomy11010066

Cited by 9 publications

(3 citation statements)

References 72 publications

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“…This may be due to low photosynthetic rate which resulted in increase in leaf area with girdling at a rate of 25%. Present findings supported by Richardson et al (2021), who observed that girdling might create an imbalance in the source-sink ratios, transpiration rates, and structural properties of the leaves. Primary reasons for the decrease in the rate of photosynthesis that occurs after girdling are the closure of the stomatal aperture and the reduction in the amount of RuBP activity that occurs per leaf area Cheng et al (2008).…”

Section: Leaf Area and Carbohydrates Contentsupporting

confidence: 90%

Kiwifruit productivity and nutrient uptake in response to different levels of girdling

Kuchay,

Rana,

Azizi

et al. 2024

SKUAST Journal of Research

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Research was conducted on the "Allison" cultivar of kiwifruit that were ten years old and had been grown on their own roots, in situ, and grafted vines. Girdling was carried in these plants at different planting intensities. The experimental vines were subjected to four different girdling treatments viz. no girdling, 25% girdling, 50% girdling, and 100% girdling. Data generated revealed that grafted kiwifruit plants whose trunks were girdled up to 25% by removing 2 mm of bark in the last week of March resulted in early blooming, and had higher leaf carbohydrates (4.43 %), fruit length (67.10 mm), and yield (18.03 tonnes/ha). Also, there was notable increase in the amount of nitrogen (2.45%), phosphorus (0.29%), and (2.42%) that was accumulated by the leaves. The correlation study revealed that yield had a positive relationship with leaf area, leaf carbohydrates, and fruit length, but did not have a significant positive relationship with leaf macronutrients.

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Section: Leaf Area and Carbohydrates Contentsupporting

confidence: 90%

Kiwifruit productivity and nutrient uptake in response to different levels of girdling

Kuchay,

Rana,

Azizi

et al. 2024

SKUAST Journal of Research

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show abstract

“…chinensis 'Zes008' (red-fleshed kiwifruit) were also studied. These fruit were harvested from a commercial orchard based in Kerikeri New Zealand (for details see Richardson et al, 2021). During fruit growth these fruit were either bagged with lightproof bags (Hirst et al, 1990) from 56 days after anthesis (DAA) for 108 days or left unbagged (control).…”

Section: Materials and Data Collection Biological Samplesmentioning

confidence: 99%

A Data Driven Approach to Assess Complex Colour Profiles in Plant Tissues

McAtee

Nardozza

Richardson³

et al. 2022

Front. Plant Sci.

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The ability to quantify the colour of fruit is extremely important for a number of applied fields including plant breeding, postharvest assessment, and consumer quality assessment. Fruit and other plant organs display highly complex colour patterning. This complexity makes it challenging to compare and contrast colours in an accurate and time efficient manner. Multiple methodologies exist that attempt to digitally quantify colour in complex images but these either require a priori knowledge to assign colours to a particular bin, or fit the colours present within segment of the colour space into a single colour value using a thresholding approach. A major drawback of these methodologies is that, through the process of averaging, they tend to synthetically generate values that may not exist within the context of the original image. As such, to date there are no published methodologies that assess colour patterning using a data driven approach. In this study we present a methodology to acquire and process digital images of biological samples that contain complex colour gradients. The CIE (Commission Internationale de l’Eclairage/International Commission on Illumination) ΔE2000 formula was used to determine the perceptually unique colours (PUC) within images of fruit containing complex colour gradients. This process, on average, resulted in a 98% reduction in colour values from the number of unique colours (UC) in the original image. This data driven procedure summarised the colour data values while maintaining a linear relationship with the normalised colour complexity contained in the total image. A weighted ΔE2000 distance metric was used to generate a distance matrix and facilitated clustering of summarised colour data. Clustering showed that our data driven methodology has the ability to group these complex images into their respective binomial families while maintaining the ability to detect subtle colour differences. This methodology was also able to differentiate closely related images. We provide a high quality set of complex biological images that span the visual spectrum that can be used in future colorimetric research to benchmark colourimetric method development.

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“…chinensis 'Zes008' (red-eshed kiwifruit) were also studied. These fruit were harvested from a commercial orchard based in Kerikeri New Zealand (for details see [49]). During fruit growth these fruit were either bagged with lightproof bags [50] from 56 days after anthesis (DAA) for 108 days or left unbagged (control).…”

Section: Image Capturementioning

confidence: 99%

A Data Driven Approach to Assess Complex Colour Profiles in Plant Tissues

McAtee

Nardozza

Richardson

et al. 2021

Preprint

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BackgroundThe ability to quantify the colour of fruit is extremely important for a number of applied fields including plant breeding, postharvest assessment, and consumer quality assessment. Fruit and other plant organs display highly complex colour patterning. This complexity makes it challenging to compare and contrast colours in an accurate and time efficient manner. Multiple methodologies exist that attempt to digitally quantify colour in complex images but these either require a priori knowledge to assign colours to a particular bin, or average the colours present within an assayed region into a single colour value. As such, to date there are no published methodologies that assess colour patterning using a data driven approach. Results In this study we present a methodology to acquire and process digital images of biological samples that contain complex colour gradients. The CIE (Commission internationale de l'éclairage / International Commission on Illumination) ΔE2000 formula was used to determine the perceptually unique colours (PUC) within images of fruit containing complex colour gradients. This process, on average, resulted in a 98% reduction in colour values from the number of unique colours (UC) in the original image. This data driven procedure summarised the colour data values while maintaining a linear relationship with the normalised colour complexity contained in the total image. A weighted ΔE2000 distance metric was used to generate a distance matrix and facilitated clustering of summarised colour data.ConclusionsClustering showed that our data driven methodology has the ability to group these complex images into their respective binomial families while maintaining the ability to detect subtle colour differences. This methodology was also able to differentiate closely related images. We provide a high quality set of complex biological images that span the visual spectrum that can be used in future colorimetric research to benchmark method development.

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Early Shoot Development Affects Carbohydrate Supply and Fruit Quality of Red-Fleshed Actinidia chinensis var. chinensis ‘Zes008’

Cited by 9 publications

References 72 publications

Kiwifruit productivity and nutrient uptake in response to different levels of girdling

Kiwifruit productivity and nutrient uptake in response to different levels of girdling

A Data Driven Approach to Assess Complex Colour Profiles in Plant Tissues

A Data Driven Approach to Assess Complex Colour Profiles in Plant Tissues

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