The effect of salicylic acid on qualitative and quantitative characteristics of grafted grapevine seedlings

Natalia G Pavlyuchenko ,S.i Melnikova ,N.i Zimina ,Olga I Kolesnikova

doi:10.1051/e3sconf/202127301014

Abstract

While the production of grafted grapevine seedlings we studied the effect of treatment of copulation sections on rootstock vine cuttings with salicylic acid solution (SC) (10-2, 10-4, 10-6, 10-8) on tissue regeneration, root formation, growth and development of shoots, leaf surface formation during the period of grafting stratification and on adaptation of seedlings in the field. In the experiment, we used grafted grapevine variety Cabernet Sauvignon, the rootstock - Berlandieri of Riparia Kober 5BB. The experiment was carried out according to a completely randomized scheme with triple repetitions (each repetition has 100 plants) in laboratory and field conditions. The results showed a reduction in the period of grafts’ stratification in some variants, due to the activation of the process of callus tissue formation. At the same time, the use of salicylic acid stimulated the budding of the scion, the growth of shoots and the development of root system. Increased concentration of SC (10-2) inhibits the growth of shoots. The positive effect of SC on adaptive parameters was established.

Highlights

With the spread of phylloxera in European vineyards, a dangerous pest that affects the root system and the aboveground part of a bush, grafting is the only effective way to propagate grapevines
To overcome the incompatibility of the scion and rootstock, to accelerate the regeneration process, to stimulate or inhibit growth processes and root formation, physiologically active substances of various types are used in nursery production
The aim of the study was to assess the effect of salicylic acid on the processes of regeneration, root formation, growth, development and adaptation to biotic and abiotic stressors of grafted grapevine seedlings

Summary

Introduction

With the spread of phylloxera in European vineyards, a dangerous pest that affects the root system and the aboveground part of a bush, grafting is the only effective way to propagate grapevines. The main reasons is incompatibility of graft and rootstock varieties belonging to different systematic species [1, 2]. Inoculation incompatibility can be defined as the inability to form a high-quality compound between two parts of a plant when all other requirements are met, such as technique, time, phytosanitary conditions, and environmental conditions [3, 4]. To overcome the incompatibility of the scion and rootstock, to accelerate the regeneration process, to stimulate or inhibit growth processes and root formation, physiologically active substances of various types are used in nursery production. Salicylic acid (SC) is a phenolic compound, a natural product of phenylpropanoid metabolism. SC is considered as an endogenous multifunctional bioregulator of phenolic nature, taking part in cellular signaling, growth processes, and the formation of adaptive reactions of plants [5]

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