Abstract
In terms of climate change researches about adaptation mechanism of perennial crop plant to summer and winter stresses are actual. Physiological-biochemical assessment of grapevine varieties allows to clarify the mechanisms of protective and adaptive reaction on stresses and identify perspective genotypes for cultivation in stressful terms. Ecological and geographical origin are important in this case. Winterhardiness of following grapevine varieties: ‘Kristal’, ‘Aligote’, ‘Dostoyniy’ ‘Krasnostop AZOS’, ‘Zarif’ and ‘Vostorg’, are studied in conditions of Anapa-Taman region of the Russian Federation. At the beginning of winter reduced water content of vine tissue are noted for ‘Kristal’, ‘Krasnostop AZOS’ and ‘Dostoyniy’ (41,4-45,3 %). Also, for this varieties are found elevated accumulation of sucrose (2 times more) which means high resistance to low temperature. Intensification of antioxidative protective system’s functioning in response on stress are discovered for varieties ‘Kristal’, ‘Krasnostop AZOS’, ‘Dostoyniy’ and ‘Vostorg’. High containing of anthocyanins and chalcones in varieties ‘Kristal’, ‘Dostoyniy’, ‘Krasnostop AZOS’ and ascorbic acid in varieties ‘Krasnostop AZOS’, ‘Dostoyniy’ are revealed. According to generalized assessment of physiological-biochemical research results in conditions of climate change in Anapa-Taman region of Russia more winterhardiness were varieties ‘Krasnostop AZOS’, ‘Dostoyniy’, ‘Kristal’ than varieties ‘Aligote’, ‘Vostorg’, ‘Zarif’.
Highlights
Develop of freeze resistance in autumn during process of hardening and its stability during cold wave in thawing weather are very important for grape wintering [1,2]
Analysis of climatic change in Anapa-Taman region of the Russian Federation showed increase of lowtemperature stresses frequency in period of hardening with extension of warm autumn period, increase of frost frequency under -15 °С in the same period and large amplitude of
Researches about physiological-biochemical adaptation mechanism of grapevine varieties to winter stresses in climatic changes conditions are actual. At this time searching of diagnostic criteria of resistance to stressful environ conditions are persisted for the purpose of effective and quick selection of grapevine varieties and usage adaptive to abiotic stresses varieties [3,4]
Summary
Develop of freeze resistance in autumn during process of hardening and its stability during cold wave in thawing weather are very important for grape wintering [1,2]. Researches about physiological-biochemical adaptation mechanism of grapevine varieties to winter stresses in climatic changes conditions are actual. At this time searching of diagnostic criteria of resistance to stressful environ conditions are persisted for the purpose of effective and quick selection of grapevine varieties and usage adaptive to abiotic stresses varieties [3,4]. The object of the research was physiological-biochemical assessment of grapevine varieties of different ecological and geographical origin under stressful conditions of winter and selection perspective genotypes for cultivation
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