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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2021-10-31
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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 |
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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 |
_version_ |
1777671026777260032 |