Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner

Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner

Resumen del trabajo presentado en el International XI Symposium on Grapevine Physiology and Biotechnology, celebrado en Stellenbosch (Sudáfrica), del 31 de octubre al 5 de noviembre de 2021

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Main Authors: Krunić, Božidar, Forneck, Astrid, Herrera, José Carlos, Tello, Javier
Format: póster de congreso biblioteca
Published: 2021-10-31
Online Access:http://hdl.handle.net/10261/262601
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spelling dig-icvv-es-10261-2626012022-03-11T03:26:33Z Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner Krunić, Božidar Forneck, Astrid Herrera, José Carlos Tello, Javier Resumen del trabajo presentado en el International XI Symposium on Grapevine Physiology and Biotechnology, celebrado en Stellenbosch (Sudáfrica), del 31 de octubre al 5 de noviembre de 2021 Pre-flowering leaf removal (PFLR) is a management practice that involves the removal of basal leaves from selected nodes of the vine before the onset of flowering. Numerous works indicate the beneficial effect of this practice to mitigate yield loss derived from cluster rot diseases (such as gray and sour rots), particularly in grapevine cultivars with highly compact clusters. However, few of them indicate the effect of PFLR on the reproductive performance of the vine. Here, we tested the effect of two PFLR treatments applied at two different moments (one or two weeks before flowering time) on the cluster yield parameters of Grüner Veltliner, one of the most important cultivars for the Austrian wine industry. Our results indicate that PFLR treatments affect male gamete development and viability, probably due to the detrimental effect of pre-flowering carbohydrate source limitation on gametogenesis processes. This limitation affected fruit set processes, which in turn decreased the number of berries per cluster of defoliated vines. As it did not generate changes in rachis architecture or berry dimensions, the reduction in berry number had a loosening effect on Grüner Veltliner clusters. Interestingly, no effects on female gamete development were observed, as defoliated and no-defoliated plants showed a similar number of seeds per berry, suggesting some asynchrony between male and female gametes development and/or different degree of susceptibility to PFLR treatments. The lower number of berries per cluster observed in defoliated plants led to lower cluster weight compared to the undefoliated ones. However, this lower yield could be considered as an acceptable trade-off for the wine industry, as the significantly lower cluster compactness might contribute to a better sanitary status of Grüner Veltliner grapes for high-quality winemaking. Peer reviewed 2022-03-02T13:20:02Z 2022-03-02T13:20:02Z 2021-10-31 2022-03-02T13:20:02Z póster de congreso http://purl.org/coar/resource_type/c_6670 XI Symposium on Grapevine Physiology and Biotechnology (2021) http://hdl.handle.net/10261/262601 Sí open
institution ICVV ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icvv-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICVV España
description Resumen del trabajo presentado en el International XI Symposium on Grapevine Physiology and Biotechnology, celebrado en Stellenbosch (Sudáfrica), del 31 de octubre al 5 de noviembre de 2021
format póster de congreso
author Krunić, Božidar
Forneck, Astrid
Herrera, José Carlos
Tello, Javier
spellingShingle Krunić, Božidar
Forneck, Astrid
Herrera, José Carlos
Tello, Javier
Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner
author_facet Krunić, Božidar
Forneck, Astrid
Herrera, José Carlos
Tello, Javier
author_sort Krunić, Božidar
title Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner
title_short Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner
title_full Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner
title_fullStr Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner
title_full_unstemmed Pre-flowering leaf removal affects gamete viability and reduces cluster compactness in Vitis vinifera L. Grüner Veltliner
title_sort pre-flowering leaf removal affects gamete viability and reduces cluster compactness in vitis vinifera l. grüner veltliner
publishDate 2021-10-31
url http://hdl.handle.net/10261/262601
work_keys_str_mv AT krunicbozidar prefloweringleafremovalaffectsgameteviabilityandreducesclustercompactnessinvitisviniferalgrunerveltliner
AT forneckastrid prefloweringleafremovalaffectsgameteviabilityandreducesclustercompactnessinvitisviniferalgrunerveltliner
AT herrerajosecarlos prefloweringleafremovalaffectsgameteviabilityandreducesclustercompactnessinvitisviniferalgrunerveltliner
AT tellojavier prefloweringleafremovalaffectsgameteviabilityandreducesclustercompactnessinvitisviniferalgrunerveltliner
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