Comparison of the effects of some applications on root and shoot development of different vitis species

Abstract

Grape varieties, rootstocks and genotypes belonging to the Vitis species have been grown for various purposes since ancient times. Different Vitis species can be propagated through both grafted and non-grafted methods. There are significant differences in rooting and shoot development among the rootstocks of different Vitis species. These differences significantly affect sapling yield and quality. In our study, we used grape varieties belonging to different species and polyploidy levels and the American grapevine rootstocks most commonly used in Turkiye to investigate the effects of five organic and inorganic based products on rooting and shoot development. We used 12 different grape varieties and seven different American grapevine rootstocks as materials. Two of the grape varieties belonging to different Vitis species were tetraploid. We investigated the effects of the five different applications on callus formation, root development level, number of roots, root length, number of shoots, shoot length and number of leaves on the shoot (excluding the rootstock). As a result, MAS RAIZ application, which is an organic based product, gave the best results in terms of callus development and shoot number, and 2000 ppm indole butyric acid applications gave the best results in terms of root development level and number of roots. Considering the general averages in terms of root length, shoot length and number of leaves on the shoot, pure water application gave better results than other applications. Growers must choose the most appropriate application, especially considering efficiency and cost. In addition, new products of chemical and organic origin that claim to promote rooting enter the market every year. These new products should be compared with scientific research, and the most accurate information should be provided to both growers and nurseries.