Influence of microbial complexes based on microorganisms’ polyfunctional strains on the grapes’ rootstock rhizogenesis stages passage

Viacheslav Ivanchenko,Dmitry Potanin,Anton Zotikov,Oleg Zameta,Sergey Mikhailov,S Knyazev,M Tsoy,O Loretts,V Kukhar,O Panfilova

doi:10.1051/e3sconf/202125404002

Abstract

The article presents data on the complex influence study of new microbial preparations Diazophyte, Phosphoenterin, Biopolicide, Aurill and Azotobacterin on biometric indicators of growth and development of grapes rootstock at separate rhizogenesis stages. Standard cuttings of the Berlandieri x Riparia Kober 5 BB rootstock grape variety were used as objects of the four-year study. For the first time, the optimal breeding range of the studied microbial complexes (MPC-1 and MPC-2 in dilution 1:10) was determined; with it, stable efficiency of root formation stimulation of subpar grape variety Berlandieri x Riparia Kober 5BB cuttings was observed. In turn, this is the basis for future studies aimed at finding the optimal concentration in this range. By its effectiveness, the use of these microbial complexes approaches the action of the traditional chemical stimulant Heteroauxin at a concentration of 0.02%.

Highlights

Today, the actual nursery farming problem still is the development of ways to increase rooting of grape cuttings
In terms of the grape plant's biology, the process of root formation begins in the xylem layers near the wood rays and the root base makes its way through the tissues of the phloema and periderm and goes outward in the form of white tubercles
Studies have shown that the natural ability of grape cuttings to form root base, roots and increase their numbers is largely dependent on the conditions of the year preceding rooting

Summary

Introduction

The actual nursery farming problem still is the development of ways to increase rooting of grape cuttings. In this regard, various methods of root formation process activation are used in the production of high-quality planting material, based on mechanical, physical or chemical impact [1]. Various methods of root formation process activation are used in the production of high-quality planting material, based on mechanical, physical or chemical impact [1] Each of these methods has its advantages and disadvantages, which in turn is the basis for finding better stimulants. With chemical plant growth regulators, there is a real risk of undesirable effects, both for the environment and for the plants themselves. Preference should be given to less harmful substances in concentrations with a low safety threshold and within the reaction norm caused by the plant genotype and only in critical periods for them

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Conclusion