Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry

Pruning is crucial to balance productivity and fruit quality in blueberry orchards. Slight, conventional and severe pruning treatments were applied on 4- and 5-year old bluberry plants cultivar 'Brigitta' to evaluate their effect on yield, leaf area, gas exchange and fruit load as driver o...

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Autores principales:	Jorquera-Fontena,E, Alberdi,M, Franck,N
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2014
Materias:	Fruit weight soluble sugars canopy leaf area photosynthesis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400008
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spelling	oai:scielo:S0718-951620140004000082015-01-20Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberryJorquera-Fontena,EAlberdi,MFranck,N Fruit weight soluble sugars canopy leaf area photosynthesis Pruning is crucial to balance productivity and fruit quality in blueberry orchards. Slight, conventional and severe pruning treatments were applied on 4- and 5-year old bluberry plants cultivar 'Brigitta' to evaluate their effect on yield, leaf area, gas exchange and fruit load as driver of fruit quality traits. Yield and berries per plant decreased with increasing pruning severity, whereas canopy leaf area increased. The resulting fruit load ranged from 0.2 to 1.4 fruit per cm² leaf area. Fruit weight, dry matter, glucose and fructose were negatively related to fruit load, with fruit fresh weight decreasing to greater extent than sugars. Berry weight was restricted by source limitation during the initial cell division and initial cell enlargement fruit growth phases as indicated by decreased relative growth rate. Light-saturated photosynthetic rate diminished with increasing pruning severity indicating a sink limitation of photosynthesis. The strong association between photosynthesis and stomatal conductance shows a high corregulation in the response of carbon and water exchange to sink demand. Our results underline agronomic and physiological factors determining blueberry yield and fruit quality and can be useful for agro-technical management.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.14 n.4 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400008en10.4067/S0718-95162014005000068
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Fruit weight soluble sugars canopy leaf area photosynthesis
spellingShingle	Fruit weight soluble sugars canopy leaf area photosynthesis Jorquera-Fontena,E Alberdi,M Franck,N Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry
description	Pruning is crucial to balance productivity and fruit quality in blueberry orchards. Slight, conventional and severe pruning treatments were applied on 4- and 5-year old bluberry plants cultivar 'Brigitta' to evaluate their effect on yield, leaf area, gas exchange and fruit load as driver of fruit quality traits. Yield and berries per plant decreased with increasing pruning severity, whereas canopy leaf area increased. The resulting fruit load ranged from 0.2 to 1.4 fruit per cm² leaf area. Fruit weight, dry matter, glucose and fructose were negatively related to fruit load, with fruit fresh weight decreasing to greater extent than sugars. Berry weight was restricted by source limitation during the initial cell division and initial cell enlargement fruit growth phases as indicated by decreased relative growth rate. Light-saturated photosynthetic rate diminished with increasing pruning severity indicating a sink limitation of photosynthesis. The strong association between photosynthesis and stomatal conductance shows a high corregulation in the response of carbon and water exchange to sink demand. Our results underline agronomic and physiological factors determining blueberry yield and fruit quality and can be useful for agro-technical management.
author	Jorquera-Fontena,E Alberdi,M Franck,N
author_facet	Jorquera-Fontena,E Alberdi,M Franck,N
author_sort	Jorquera-Fontena,E
title	Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry
title_short	Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry
title_full	Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry
title_fullStr	Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry
title_full_unstemmed	Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry
title_sort	pruning severity affects yield, fruit load and fruit and leaf traits of 'brigitta' blueberry
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400008
work_keys_str_mv	AT jorquerafontenae pruningseverityaffectsyieldfruitloadandfruitandleaftraitsofbrigittablueberry AT alberdim pruningseverityaffectsyieldfruitloadandfruitandleaftraitsofbrigittablueberry AT franckn pruningseverityaffectsyieldfruitloadandfruitandleaftraitsofbrigittablueberry
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Pruning severity affects yield, fruit load and fruit and leaf traits of 'Brigitta' blueberry

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