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.

中文翻译：

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两个葡萄品种的潜在施肥能力：伊比利亚西北半岛原产地指定对农业生产的影响

在本研究中，我们分析了2017年和2018年这两个葡萄品种Godello和Mencía与潜在施肥能力相关的主要参数。该研究是在加利西亚里贝罗产区指定产区的两个葡萄园中进行的。和里贝拉·萨克拉。选择每个品种的十个葡萄藤进行束和花计数，花粉计算，通过乙酰胭脂红（AC）染色和2,3,5-三苯基四唑鎓（TTC）方法进行花粉生存力研究以及确定其发芽率率。除2017年Cenlle的Godello以外，所有葡萄园中均达到了50％的果期。Godello的平均库拉值（40.5％）高于孟买的平均库拉值（31％）。分析每棵植物的花粉产量和空气中的花粉水平，我们观察到它们之间的重要矛盾，这可能是由于天气条件的影响，并且与自花传粉过程有关。我们发现花粉生存力的重要差异取决于所应用的方法和品种，在所有研究小区中，两种方法的AC方法值均高于TTC，而Mencía品种的值高于Godello。关于发芽率，我们观察到所有研究地点和两个品种的2017年均比2018年显着下降。分析的参数有助于解释戈贝罗和孟西亚品种在两个被研究的里贝罗和里贝拉萨克拉生物气候地区的不同生产能力。在所有研究小区中，两个品种的AC方法值均高于TTC，孟席亚品种的值均高于Godello。关于发芽率，我们观察到所有研究地点和两个品种的2017年均比2018年显着下降。分析的参数有助于解释戈贝罗和孟西亚品种在两个被研究的里贝罗和里贝拉萨克拉生物气候地区的不同生产能力。在所有研究地块中，两种方法的AC方法值均高于TTC，而孟西亚的值高于Godello。关于发芽率，我们观察到所有研究地点和两个品种的2017年均比2018年显着下降。分析的参数有助于解释戈贝罗和孟西亚品种在两个被研究的里贝罗和里贝拉萨克拉生物气候地区的不同生产能力。