Folia Horticulturae

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Improvement of grapevines rooting and growth of plants under stress conditions by Asahi SL

Krzysztof Górnik, Mieczysław Grzesik, Augustyn Mika

Research Institute of Pomology and Floriculture
Department of Ornamental Nursery and Seed Science
Pomologiczna 18, 96-100 Skierniewice, Poland
e-mail: kgornik@insad.pl

The effects of grapevines cutting soaking in Asahi SL on their rooting and further plant development under optimal (20°C; 42% H2O v/v), drought (20°C; 18, 25, 32% v/v) or temperature (10°C, 30°C; 42% v/v) stress conditions were investigated. Drought or temperature stress negatively affected subsequent development of grapevine plants in optimal conditions during the first growth season as well as in the year following winter storage. The influence of 10°C was the most unfavorable one among all the examined stress conditions. The growth of plants obtained from the rooted cuttings subjected to this temperature at the time when one developed primary root appeared was inhibited. Asahi SL application in 0.2% increased grapevine tolerance to temperature and drought stress. The positive reaction of this chemical was more prominent when cuttings with one developed primary root were exposed to the most severe drought stress (20°C, 18% H2O v/v). This chemical agent decreased frost damages not only during winter storage but also positively affected further growth in the next vegetation season.

Górnik K., Grzesik M., Mika A., 2007. Improvement of grapevines rooting and growth of plants under stress conditions by Asahi SL. Folia Horticulturae 19/2: 57-67.