Resistance of grapevine varieties of Kvemo (lower) Kartli of Georgia to abiotic factors

Abstract

The paper analyzes relative resistance to abiotic factors of Lower (Kvemo) Kartli, Georgia grape varieties such as Rkatsiteli, Saperavi, Asuretuli shavi and Tavkveri (Vitis vinifera L.) with chlorophyll fluorescence method. It is shown that Rkatsiteli and Asuretuli shavi are distinguished by the highest frost resistance, followed by Saperavi and Tavkveri. However, Asuretuli shavi is more resistant to spring frosts. Rkatsiteli reveals more resistance to high temperatures, followed by Saperavi, Asuretuli shavi and Tavkveri. As for droughts, the most resistant is Asuretuli shavi, followed by Rkatsiteli, Saperavi and Tavkveri.