The increasing of the in vitro multiplication rate for grapevine genotypes by application of low-intensity millimeter waves

Abstract

he aim of this work involves the application of low-intensity millimeter waves on the meristematic apex for increasing of the in vitro multiplication rate for six grapevine genotypes. After the first 25-35 days of inoculation it was attested the proliferation and development of regenerants, which were subsequently transferred to nutritive media for micropropagation. The rate of explant with shoots varied between 8.39 % and 46.04 % for evaluated genotypes. The millimeter waves conducted to the increasing of this parameter. The major growth was established for Apiren extratimpuriu (by 2.24 times) and the smaller for Prezentabil (by 1.1 times). The number of shoots per explant had the minimal and maximal values certified between 1.0 ÷ 5.98 for control and 2.75 ÷ 27.83 for experimental traits. The growth capacity of this index ranged from 1.48 for Gen Moldova to 4.91 for 1-5-71 genotype.