Influence of growth regulators application on the gooseberries mother plants on regenerative ability of their vegetative progeny depending on rooting condition

Анотація

Currently, the area under industrial gooseberry plantations in Ukraine is small. The reason is lack of qualitative planting material in modern varieties, that combine high yield, taste weak, thornless shoots and disease resistant. There is a need to search ways to quickly obtain planting material of these varieties with minimal material costs.

 The aim - to evaluate the effectiveness of the use of physiologically active substances in the preparation of mother plants for reproduction in different conditions cuttings rooting.

Research was done with gooseberry varieties: Grushenka, Sadko, Kolhozny, Zeleny Dosch. Age of mother plants are 3-5 years. As growth regulators were used 2-hloretilfosfon  acid ( "Etrel") at a concentration of 0,035%,  hlormekvat - chloride ("Athlete ") – 0,008%,  indolebutyric acid (IBA) - 30 mg/l. Researching mother plants were sprayed with retardants solutions ("Etrel", "Athlete") two weeks before cuttings, control plants was sprayed with water and control cuttings are treated with a solution of IBA according to traditional technology. Green cuttings was rooted in greenhouse  with  artificial fog and in the tunnels with manual watering, covered with milky-white film.

Research have demonstrated, that the use of physiologically active substances for preparation of gooseberry mother plants for reproduction, significantly increase the percentage of cuttings rooting and quality of the newly formed root system, especially during unregulated conditions under milky-white film rooting. Maximum efficiency was observed on varieties, that differ genetically determined low capacity for rooting (Sadko, Zeleny Dosch).