13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring

Stored reserves are critical for the early spring growth of reproductive and vegetative sinks in sweet cherry (Prunus avium L.). To study the distribution of carbon storage reserves on new, highly productive hybrid rootstocks in sweet cherry, an experiment was established using 5-yr-old cv. 'Re...

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Autores principales:	Ayala,Marlene, Lang,Gregory A
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2015
Materias:	Fruit set 'Gisela®' rootstock sink spring remobilization stage I storage reserves transition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200006
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spelling	oai:scielo:S0718-162020150002000062015-09-1613C Photoassimilate partitioning in sweet cherry (Prunus avium) during early springAyala,MarleneLang,Gregory A Fruit set 'Gisela®' rootstock sink spring remobilization stage I storage reserves transition Stored reserves are critical for the early spring growth of reproductive and vegetative sinks in sweet cherry (Prunus avium L.). To study the distribution of carbon storage reserves on new, highly productive hybrid rootstocks in sweet cherry, an experiment was established using 5-yr-old cv. 'Regina' on the semi-vigorous rootstock 'Gisela®6' ('GI®6'). Using whole-canopy enclosure chambers, five trees were pulse-labeled three times with high levels of 13CO2 during the fall. At leaf drop, leaves, buds, wood, bark and roots were sampled for gas chromatography-mass spectrometry (GC-MS) analysis. The storage organs with the highest percentages of excess 13C atoms were the roots and the older wood in the trunks, branches and buds. During the spring, newly developing organs (flowers, immature fruits and leaves) were sampled weekly from bloom to stage III of fruit development for additional GC-MS analysis. 13C-reserves were remobilized and partitioned to flowers, fruits and young leaves from before budbreak (side green stage) until 14 days after full bloom (DAFB). The isotopic composition differed significantly between phenological stages, and the highest 13C levels in the growing sinks were detected between bloom and fruit set. The reproductive organs had the strongest sink activity until 14 DAFB, and competition with spur leaf sink activity was apparent. It is proposed that reserve source limitation may impact fruit set and spur leaf development, which may ultimately impact the availability of photoassimilate during the later stages of fruit growth.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.42 n.2 20152015-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200006en10.4067/S0718-16202015000200006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Fruit set 'Gisela®' rootstock sink spring remobilization stage I storage reserves transition
spellingShingle	Fruit set 'Gisela®' rootstock sink spring remobilization stage I storage reserves transition Ayala,Marlene Lang,Gregory A 13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring
description	Stored reserves are critical for the early spring growth of reproductive and vegetative sinks in sweet cherry (Prunus avium L.). To study the distribution of carbon storage reserves on new, highly productive hybrid rootstocks in sweet cherry, an experiment was established using 5-yr-old cv. 'Regina' on the semi-vigorous rootstock 'Gisela®6' ('GI®6'). Using whole-canopy enclosure chambers, five trees were pulse-labeled three times with high levels of 13CO2 during the fall. At leaf drop, leaves, buds, wood, bark and roots were sampled for gas chromatography-mass spectrometry (GC-MS) analysis. The storage organs with the highest percentages of excess 13C atoms were the roots and the older wood in the trunks, branches and buds. During the spring, newly developing organs (flowers, immature fruits and leaves) were sampled weekly from bloom to stage III of fruit development for additional GC-MS analysis. 13C-reserves were remobilized and partitioned to flowers, fruits and young leaves from before budbreak (side green stage) until 14 days after full bloom (DAFB). The isotopic composition differed significantly between phenological stages, and the highest 13C levels in the growing sinks were detected between bloom and fruit set. The reproductive organs had the strongest sink activity until 14 DAFB, and competition with spur leaf sink activity was apparent. It is proposed that reserve source limitation may impact fruit set and spur leaf development, which may ultimately impact the availability of photoassimilate during the later stages of fruit growth.
author	Ayala,Marlene Lang,Gregory A
author_facet	Ayala,Marlene Lang,Gregory A
author_sort	Ayala,Marlene
title	13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring
title_short	13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring
title_full	13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring
title_fullStr	13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring
title_full_unstemmed	13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring
title_sort	13c photoassimilate partitioning in sweet cherry (prunus avium) during early spring
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200006
work_keys_str_mv	AT ayalamarlene 13cphotoassimilatepartitioninginsweetcherryprunusaviumduringearlyspring AT langgregorya 13cphotoassimilatepartitioninginsweetcherryprunusaviumduringearlyspring
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13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring

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