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Potential for Biocontrol ofLasiodiplodia theobromae(Pat.) Griff. & Maubl. in Banana Fruits byTrichodermaSpecies

Authors
Journal
Biological Control
1049-9644
Publisher
Elsevier
Publication Date
Volume
15
Issue
3
Identifiers
DOI: 10.1006/bcon.1999.0716
Keywords
  • Banana
  • Biological Control
  • Fruit Rot
  • Lasiodiplodia Theobromae
  • Trichoderma Spp.

Abstract

Abstract Fifteen Trichoderma isolates were tested for their antagonistic ability against Lasiodiplodia theobromae. Trichoderma harzianum exhibited the greatest inhibition in dual culture. Microscopic investigation demonstrated direct parasitism and coiling of T. harzianum and T. viride around hyphae of L. theobromae, causing swollen, deformed, shortened, or rounded cells of the pathogen. Granulation of cytoplasm and disintegration of the hyphal walls of L. theobromae also were noted in dual culture. Trichoderma viride reduced rotting by 29.07 to 65.06% in artificially inoculated banana fruits. Treatment of banana fruits with T. viride 4 h prior to inoculation with L. theobromae provided better protection than simultaneous application or treatment 4 h after inoculation.

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