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Willem J. Steyn

Researcher at Stellenbosch University

Publications -  33
Citations -  1215

Willem J. Steyn is an academic researcher from Stellenbosch University. The author has contributed to research in topics: Canopy & Malus. The author has an hindex of 9, co-authored 32 publications receiving 1024 citations.

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Anthocyanins in vegetative tissues: a proposed unified function in photoprotection

TL;DR: The various aspects of anthocyanin induction and pigmentation presented here are compatible with, and support, the proposed general role of Anthocyanins as photoprotective light screens in vegetative tissues.
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Evidence for a photoprotective function of low‐temperature‐induced anthocyanin accumulation in apple and pear peel

TL;DR: Results support the view that anthocyanins are adaptable light screens deployed to modulate light absorption in sensitive tissues such as fruit peel in response to environmental triggers such as cold front snaps.
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Apple Compositional and Peel Color Differences Resulting from Canopy Microclimate Affect Consumer Preference for Eating Quality and Appearance

TL;DR: This study evaluated the internal and external quality of inner and outer canopy apples in relation to consumer preference for the eating quality and appearance of these fruit from the Ceres region in South Africa in the 2009–10 and 2010–11 seasons.
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Estimating the water requirements of high yielding and young apple orchards in the winter rainfall areas of South Africa using a dual source evapotranspiration model

TL;DR: In this paper, the authors investigate the dynamics of water use in eight apple orchards in South Africa planted to Golden Delicious and the red cultivars i.e. Cripps’ Pink, Cripp’ Red and Rosy Glow in order to understand how canopy cover and crop load influence orchard water use.
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Peel Color and Blemishes in ‘Granny Smith’ Apples in Relation to Canopy Light Environment

TL;DR: Maximum chlorophyll synthesis and dark green color require an open canopy during the first half of fruit development, whereas shading is necessary during the latter half of Fruit development to avoid the occurrence of sunburn, red blush, and photothermal destruction of chlorophyLL.