RESISTANCE ELICITORS ON PRODUCTION AND POST-PRODUCTION PERFORMANCE OF POTTED LISIANTHUS

Authors

  • Márcia Maria de Souza Gondim Dias Graduate Program of Agronomy, Center of Agrarian Sciences, Universidade Federal da Paraíba, Areia, PB https://orcid.org/0000-0002-8809-7235
  • Silvanda de Melo Silva Postharvest Biology and Technology Laboratory, Center of Agrarian Sciences, Universidade Federal da Paraíba, Areia, PB https://orcid.org/0000-0003-2106-6458
  • Alex Sandro Bezerra de Sousa Graduate Program of Agronomy, Center of Agrarian Sciences, Universidade Federal da Paraíba, Areia, PB https://orcid.org/0000-0002-4573-4708
  • Renato Lima Dantas Faculdades de Enfermagem Nova Esperança, João Pessoa, PB https://orcid.org/0000-0002-5464-9476
  • Vanessa Cavalcante de Almeida Graduate Program of Agronomy, Center of Agrarian Sciences, Universidade Federal da Paraíba, Areia, PB https://orcid.org/0000-0002-8275-2219
  • Luciana Cordeiro do Nascimento Laboratory of Phytopathology, Center of Agrarian Sciences, Universidade Federal da Paraíba, Areia, PB https://orcid.org/0000-0002-5706-7041

DOI:

https://doi.org/10.1590/1983-21252021v34n104rc

Keywords:

Eustoma grandiflorum (Raf.) shinn. Ornamental plant. Quality. Resistance induction. Potted flowers viability.

Abstract

Lisianthus is an important ornamental species, whose cultivation in pot still requires studies, mainly regarding the use of alternative management. Thus, the aim of this work was to evaluate the influence of resistance elicitors on the production and post-production quality of potted lisianthus.  Plants grown in pots were treated with two  elicitors: (E1)  phosphorylated mannano-oligosaccharide and (E2) citric bioflavonoids and phytoalexins, in the doses (D) of 1 and 2μL.L-1 (E1D1 1μL.L-1, E1D2 2μL.L-1, E2D1 1μL.L-1, E2D2 2μL.L-1 and control), with 5 replications, in  a completely randomized  design.  After opening the first flower buds, the plants remained in the greenhouse for 15 days, until they reached at least 3 open flowers, when were transferred to the room conditions (24 ± 2 oC and 72 ± 2%) for another 15 days. The application of elicitors did not influence the culture cycle or the size of the stem. There was an increase, however, in the number of viable buds and open flowers, in addition to an increase in flower’s useful life paralleled to the reduction of senescent flowers, in relation to the control. The dose of 2μL.L-1 of the E2 kept the percentage of viable open flowers in relation to the control for at least another 5 days, reducing the percentage of senescent flowers. Together, with the application of the E2 elicitor in potted lisianthus, the viability of the flowers can be prolonged, maintaining quality and delaying senescence, and, in this way, increasing the market period.

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Published

03-03-2021

Issue

Vol. 34 No. 1 (2021)

Section

Agronomy

License

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