Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada

We studied the effect of shade on the phenology, growth, berry yield, and chemical content of two common blueberry species (<i>Vaccinium myrtilloides</i> and <i>V. angustifolium</i>) in Northwestern Ontario. We hypothesized that high shade would delay vegetative and reproduct...

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Main Authors: Viktoriya Dyukaryeva, Azim U. Mallik
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:Plants
Subjects:
Online Access:https://www.mdpi.com/2223-7747/12/24/4099
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author Viktoriya Dyukaryeva
Azim U. Mallik
author_facet Viktoriya Dyukaryeva
Azim U. Mallik
author_sort Viktoriya Dyukaryeva
collection DOAJ
description We studied the effect of shade on the phenology, growth, berry yield, and chemical content of two common blueberry species (<i>Vaccinium myrtilloides</i> and <i>V. angustifolium</i>) in Northwestern Ontario. We hypothesized that high shade would delay vegetative and reproductive phenology and decrease berry yield by increasing resource allocation to vegetative vs. reproductive growth, whereas moderate shade would increase berry phenolic content and antioxidant capacity. We subjected transplanted blueberry plants to a controlled shade treatment and evaluated plant phenological events, vegetative and reproductive growth, berry phenolics, and antioxidant capacity. High shade caused an earlier leaf maturation in <i>V. myrtilloides,</i> delayed flowering in <i>V. angustifolium</i>, and prolonged fruit maturation in both. The berry yield of both species decreased with increasing shade. High shade reduced the berry phenolic content and antioxidant capacity, especially in <i>V. myrtilloides</i>. We concluded that shade shifts species-specific vegetative and reproductive phenology, leading to a difference in resource acquisition, resulting in lower berry yield and antioxidant activity.
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spelling doaj.art-6afccc3e05054de8bdd0c4514e1264762023-12-29T15:47:21ZengMDPI AGPlants2223-77472023-12-011224409910.3390/plants12244099Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, CanadaViktoriya Dyukaryeva0Azim U. Mallik1Department of Biology, Lakehead University, Thunder Bay, ON P7B 5E1, CanadaDepartment of Biology, Lakehead University, Thunder Bay, ON P7B 5E1, CanadaWe studied the effect of shade on the phenology, growth, berry yield, and chemical content of two common blueberry species (<i>Vaccinium myrtilloides</i> and <i>V. angustifolium</i>) in Northwestern Ontario. We hypothesized that high shade would delay vegetative and reproductive phenology and decrease berry yield by increasing resource allocation to vegetative vs. reproductive growth, whereas moderate shade would increase berry phenolic content and antioxidant capacity. We subjected transplanted blueberry plants to a controlled shade treatment and evaluated plant phenological events, vegetative and reproductive growth, berry phenolics, and antioxidant capacity. High shade caused an earlier leaf maturation in <i>V. myrtilloides,</i> delayed flowering in <i>V. angustifolium</i>, and prolonged fruit maturation in both. The berry yield of both species decreased with increasing shade. High shade reduced the berry phenolic content and antioxidant capacity, especially in <i>V. myrtilloides</i>. We concluded that shade shifts species-specific vegetative and reproductive phenology, leading to a difference in resource acquisition, resulting in lower berry yield and antioxidant activity.https://www.mdpi.com/2223-7747/12/24/4099blueberryphenologyreproductive responsevegetative growthlight intensityblack shading net
spellingShingle Viktoriya Dyukaryeva
Azim U. Mallik
Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada
Plants
blueberry
phenology
reproductive response
vegetative growth
light intensity
black shading net
title Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada
title_full Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada
title_fullStr Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada
title_full_unstemmed Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada
title_short Shade Effect on Phenology, Fruit Yield, and Phenolic Content of Two Wild Blueberry Species in Northwestern Ontario, Canada
title_sort shade effect on phenology fruit yield and phenolic content of two wild blueberry species in northwestern ontario canada
topic blueberry
phenology
reproductive response
vegetative growth
light intensity
black shading net
url https://www.mdpi.com/2223-7747/12/24/4099
work_keys_str_mv AT viktoriyadyukaryeva shadeeffectonphenologyfruityieldandphenoliccontentoftwowildblueberryspeciesinnorthwesternontariocanada
AT azimumallik shadeeffectonphenologyfruityieldandphenoliccontentoftwowildblueberryspeciesinnorthwesternontariocanada