Evolution of principal phenological phases of some old autochthonous varieties in conditions of ampelographic collection of ISPHTA

Abstract

In the paper is presented the evolution during the last 50 years of the principal phenological phases of some old autochthonous varieties in the conditions of the Ampelographic Collection of the Scientific and Practical Institute of Horticulture and Food Technologies of the Republic of Moldova, in the context of evolution during this period of climatic parameters. The observations covered three distinct periods: 1962-1968, 1978-1987 and 2012-2014. For most varieties, during the last study period, there is a pronounced trend of earlier development of all phenological phases. The analysis of the qualitative parameters indicates a decrease, compared to the previous periods, of the total acidity of must.