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Open AccessArticle

Potential Fertilization Capacity of Two Grapevine Varieties: Effects on Agricultural Production in Designation of Origin Areas in the Northwestern Iberian Peninsula

1
CITACA, Agri-Food Research and Transfer Cluster, Faculty of Sciences, University of Vigo, 32002 Ourense, Spain
2
Earth Sciences Institute (ICT), Pole of the Faculty of Sciences University of Porto, 4169-007 Porto, Portugal
3
Department of Botany, Higher Polytechnic School of Engineering, University of Santiago de Compostela, 27002 Lugo, Spain
4
Department of Botany, Pharmacy Faculty, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(7), 961; https://doi.org/10.3390/agronomy10070961
Received: 4 June 2020 / Revised: 26 June 2020 / Accepted: 30 June 2020 / Published: 3 July 2020
In the present study, we analyzed the main parameters related with the potential fertilization ability of two grapevine varieties, Godello and Mencía, during the years 2017 and 2018. The research was carried out in two vineyards of the Galician winegrowing Designation of Origin areas of Ribeiro and Ribeira Sacra. Ten vines of each variety were selected for bunch and flower counting, pollen calculations, pollen viability studies by means of aceto-carmine (AC) stain and 2, 3, 5-triphenyl tetrazolium chloride (TTC) methods, and the determination of their germination rate. In all vineyards the 50% fruitset was reached, except for Godello in Cenlle during 2017. The mean coulure value was higher for Godello (40.5%) than for Mencía (31%). Analyzing the pollen production per plant and airborne pollen levels, we observed important discordances between them, which can be due to the influence of weather conditions and be related with self-pollination processes. We found important differences on pollen viability depending on the applied method and variety, with higher values for the AC method than the TTC for both varieties in all study plots, and higher values for Mencía variety than Godello. Regarding germination rates, we observed a marked reduction in 2017 with respect to 2018, in all study sites and for both varieties. The analyzed parameters were useful to explain the different productive abilities of Godello and Mencía varieties in the two studied bioclimatic regions of Ribeiro and Ribeira Sacra. View Full-Text
Keywords: pollen fertility; Godello; Mencía; reproductive performance; harvest production pollen fertility; Godello; Mencía; reproductive performance; harvest production
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MDPI and ACS Style

Cortiñas Rodríguez, J.A.; Fernández-González, M.; González-Fernández, E.; Vázquez-Ruiz, R.A.; Rodríguez-Rajo, F.J.; Aira, M.J. Potential Fertilization Capacity of Two Grapevine Varieties: Effects on Agricultural Production in Designation of Origin Areas in the Northwestern Iberian Peninsula. Agronomy 2020, 10, 961. https://doi.org/10.3390/agronomy10070961

AMA Style

Cortiñas Rodríguez JA, Fernández-González M, González-Fernández E, Vázquez-Ruiz RA, Rodríguez-Rajo FJ, Aira MJ. Potential Fertilization Capacity of Two Grapevine Varieties: Effects on Agricultural Production in Designation of Origin Areas in the Northwestern Iberian Peninsula. Agronomy. 2020; 10(7):961. https://doi.org/10.3390/agronomy10070961

Chicago/Turabian Style

Cortiñas Rodríguez, J. Antonio; Fernández-González, María; González-Fernández, Estefanía; Vázquez-Ruiz, Rosa A.; Rodríguez-Rajo, F. Javier; Aira, María Jesús. 2020. "Potential Fertilization Capacity of Two Grapevine Varieties: Effects on Agricultural Production in Designation of Origin Areas in the Northwestern Iberian Peninsula" Agronomy 10, no. 7: 961. https://doi.org/10.3390/agronomy10070961

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