Abstract
The minirhizotron system gives opportunity to study the root development without disturbing the soil and root. We have found certified differences in root development during the year 2013 among the rootstocks grafted on ‘Cabernet sauvignon’. The number of roots varied according to the rootstocks in different depth of soil layers and also varied the development of ripeness of the root system. We conclude that root system development is affected by soil physical and chemical properties, but differences according to the rootstock genotype on the similar type of soil exist.
Highlights
Phylloxera resistant grape rootstocks have been used widely since the end of the nineteenth century (Galet, 1988)
Cultivars bred and selected to grape rootstocks originated from different Vitis species covering wide range of environmental conditions
Our aim is to enhance our knowledge on seasonal root development of different grape rootstocks grafted on the top one scion, ‘Cabernet sauvignon’
Summary
Phylloxera resistant grape rootstocks have been used widely since the end of the nineteenth century (Galet, 1988). Cultivars bred and selected to grape rootstocks originated from different Vitis species covering wide range of environmental conditions. Environmental factors strongly influence the growth rates, as a result, the role of the grape rootstocks are important, especially when extreme soil conditions are given (Bertamini et al, 1992). The quantity and quality of the yield depends on both component, on grape rootstock and scion, and their combinations (Rives, 1971; Lefort és Legisle, 1977; Howell, 1987). The root system expansion and function through water and mineral uptake cause the direct effect, while growth habit, yield quantity and quality could be influenced through a carbohydrate source sink relation, or through secondary metabolites. Our aim is to enhance our knowledge on seasonal root development of different grape rootstocks grafted on the top one scion, ‘Cabernet sauvignon’. Knowledge can be used for better rootstock selection to similar soil conditions and for better coordination of applied phytotechnics and fertilization in the future
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