Auxine’s Influence on Rooting Cuttings of Begonia L.
DOI:
https://doi.org/10.29038/2617-4723-2018-381-28-32Keywords:
vegetative reproduction, auxins, phytohormones, cuttings, rhizogenesisAbstract
Begonias are widespread indoor plants that are unpretentious to growing conditions and quite decorative. The method of vegetative reproduction of Begonia by leaf and stem-cuttings is described in detail in the textbooks on floriculture, workbooks and scientific articles. The purpose of the article was to set efficiency for rooting phytohormones leaf and stem cuttings of some species of the genus Begonia L. The article tasks were: determine whether auxin stimulants rhizogenesis stem and leaf cuttings of Begonia L. and study duration and intensity of rooting cuttings of begonias using various doses of auxines.
Trimming of the studied plants was carried out in March. We have used stem cuttings of Begonia coralina, stem and leaves cuttings of B. luserna, B. schmidtiana, B. metalica, leaves cuttings B. tiger and B. manicata. Cuttings were taken from a healthy part of the mother plant. At first they were placed for 12 hours in solutions of phytohormones: IAA − 25 mg/l, IBA − 25 mg/l, IAa + IBA 25 + 25 mg/l, then distilled water was used as a rooting substance.
The standard solution was water without adding auxins. After the emergence of additional roots to account for rooted cuttings, we use the methodology of the Botanical Garden of NUBiP of Ukraine, which provides for quantitative and qualitative estimation.
The obtained results indicate that for vegetative reproduction of B. luсеrnа, B. metalica and B. schmidtiana we recommend using stems, which are responded well to the exogenous introduction of IBA (25 mg/l). Cuttings, which were in water without the action of phytohormones, died in B. coralina and B. luсеrnа, not rooted in B. tiger, very weakly rooted in B. manicata, and satisfactorily in the B. metalica and B. schmidtiana. Obviously, the cuttings of the studied variants require the exogenous influence of auxins. The best stimulator of rhizogenesis for the studied types of begonias is a solution of IBA (25 mg/l), in which a generally satisfactory rooting is observed. On an exogenous application of IAA (25 mg/l), begonias cuttings react specifically. The survival percent of all studied species of begonias was 100 %. All variants have formed plants that are in the stage of budding or abundant flowering.
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