Frost hardiness of grapevine grown under the conditions of air pollution caused by industrial immisions

• Published in: Ochrana Rostlin - UVTIZ (CSFR) Vol. 27; no. 3-4
• Main Author: Hubackova, M. (Vyzkumna Stanice Vinarska, Karlstejn (CSFR))
• Format: Journal Article
• Language: Czech
• Published: 01.12.1991
• Subjects: ENSAYOS DE VARIEDADES; ESSAI DE VARIETE; GEL; HELADA; POLLUTION ATMOSPHERIQUE; POLUCION DEL AIRE; REPUBLICA CHECA; REPUBLIQUE TCHEQUE; RESISTANCE A LA TEMPERATURE; RESISTENCIA A LA TEMPERATURA; VITIS VINIFERA
• ISSN: 0036-5394

The aim of this work was to evaluate frost-hardiness of winter grapevine buds from locality exposed to a strong current of harmful industrial immissions from chemical plants and from location exposed to the acid gas concentrations (SO2 and NOx) in air lower by 30-40 per cent. In winter period in 1989 - 1990, in the both locations, we cut away annual, well lignified shoots with buds from the grapevines of the Pinot gri and Riesling cultivars on the 2nd and 19th of January; these cuttings were exposed to frost stresses in the controlled conditions of freezing chambers at the temperature of -17, -20 and -23 degrees C according to a previously described process (Damborska,1978). Frost-hardiness of buds was evaluated on the basis of budding of one-bud cuttings after the frost stresses. The results obtained from six frost stresses showed that the average frost-resistance in both varieties was lower in the locality where the immission was higher. Differences in the frost-hardiness of buds showed up mainly in the second half of January after the frost stress of -23 degrees C.