Grapevine Propagation Method with Two Temperature Controlling Process

Abstract

Since vine propagation methods can cause physiological stress, it has a great impact on sustainable viticulture. The aim of this review is to introduce the applied techniques in decreasing the time period and manage the physiological stage of vine cuttings by simultaneously manipulating the temperature of two nodes of the same cuttings in order to stimulate roots and inhibit shoot formation for vegetative propagation. To avoid mold and other bacterial diseases, antifungal and antibacterial treatment is applied. In asymptomatic situations, all cuttings should be treated with hot water before carrying out the rooting process. The cuttings are exposed to soilless aseptic hydrated media to maintain thermal isolation for emergence of root callus, at 25-27 °C during 3-4 weeks. Meanwhile, spatial temperature under 1 °C may result in chilly stress. More than 2 °C may have a significant influence on cutting performance, and above 4 °C stimulate microbial activity. Therefore, the system must maintain between 2-4 °C. This technique provides to viticulture farmers for regulation of root development and disease-free cuttings in a short time period.

Energy characteristics of electrotechnological processing of grape cuttings

“…(1) in this I is a vine that goes through the vine, A; S is the cross-sectional surface of the grapevine, m2; Studies have shown that the processing time (τ) of alternating electric current flowing through the handle, the geometric dimensions of the handle depending on the physiological state (diameter (d), surface (S) and length of the handle (l), network voltage (U), distance between electrodes (l) and showed the dependence of the current supplied to the pen (f). In studies on the electrical processing of grapevine cuttings, various methods of placing the cuttings in the working chamber were tested [11,12]. These studies did not study the electrophysical processes when the sludge was not immersed in water, and the study of the current flow through the sludge per unit time for a given production line is a reason for understanding important factors.…”

“…  (10) in this: W1 -useful energy absorbed by grapevine cuttings; W2 -energy used for electrical heating of water; In his studies, V.A. Petrukhin determined expression (11) during the electrical treatment of fruit tree cuttings, that is, he described the degree of susceptibility Sst during the electrical treatment of fruit tree cuttings as follows. (11) in this: S0 -initial resistance, %; γ=β/Rн -marking is on; β -proportionality coefficient, Ω /J; RT-current resistance, Ω; Rн -initial resistance, Ω αproportionality coefficient, 1/J.…”

“…Petrukhin determined expression (11) during the electrical treatment of fruit tree cuttings, that is, he described the degree of susceptibility Sst during the electrical treatment of fruit tree cuttings as follows. (11) in this: S0 -initial resistance, %; γ=β/Rн -marking is on; β -proportionality coefficient, Ω /J; RT-current resistance, Ω; Rн -initial resistance, Ω αproportionality coefficient, 1/J. The energy used to electrically stimulate grapevine cuttings can be written as follows.…”

“…The Joule-Lenz formula for a system of plane-parallel electrodes is used for the energy used to electrically heat water. (14) in this: -water resistivity, Ohm-m; l-distance between the plane-parallel system of electrodes, m; v, h-electrode system sining geometrics ulchamlari, cm; Substituting this expression ( 13) and ( 14) into expression (11), we obtain: Simplifying the illustrated expression (17), we obtain the theoretical expression ( 18)…”