Efficiency of propagation methods of raspberry-blackberry hybrids of Loganberry and Tayberry and their economic and biological estimation

Abstract

The article presents the possibility of propagation of two raspberry-blackberry hybrids of Loganberry and Tayberry by different ways (micropropagation and rooting of apical buds of shoots) in vitro and in vivo. The investigation of propagation features of raspberryblackberry hybrids showed high indexes for both hybrids during propagation in vitro. Loganberry plants surpassed Tayberry plants by propagation index but had shorter shoots. Using rooting of apical buds of shoots technique in the first year after planting from one bush of Loganberry1-2 rooted plants were obtained, and 4-5 rooted plants were obtained from one bush of Tayberry. For mass propagation of Loganberry plants in vitro multiplication is recommended, for raspberry-blackberry hybrid Tayberry it is preferable multiplication by rooting of apical buds of shoots in vivo conditions. Micropropagation should be used for plants recovery and accelerated reproduction.

Early maturing, high-yielding, large-fruited raspberry-blackberry hybrid Tayberry has been highlighted on a complex of economically valuable traits demonstrated in the field conditions.