Open AccessControl of Fusarium Wilt Disease of Cucumber Using Rhizospheric Antagonistic Fungi
Author(s) -
Abdulnabi Abbdul Ameer Matrood,
Abdelhak Rhouma,
Thakaa Fayez Mohammed
Publication year - 2022
Publication title -
maǧallaẗ wiqāyaẗ al-nabāt al-arabiyyaẗ
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.149
H-Index - 2
eISSN - 2412-5407
pISSN - 0255-982X
DOI - 10.22268/ajpp-040.1.062069
Subject(s) - fusarium oxysporum , cucumis , biology , wilt disease , fusarium wilt , horticulture , biological pest control , mycelium , aspergillus niger , cucurbitaceae , fusarium , wilting , botany , microbiology and biotechnology
Fusarium wilt disease caused by Fusarium oxysporum f. sp. cucumerinum is a severe disease of cucumbers causing yield losses worldwide. Various experiments were conducted to assess the antifungal potential of fungal bio-agents isolated from soil and cucumber seed (bio-priming). Trichoderma koningii seemed to be the most effective bio-agent against F. oxysporum f. sp. cucumerinum with mycelial inhibition rate above 90%, followed by Aspergillus niger (87.70%) under laboratory conditions. Results showed that T. koningii was found effective to enhance the germination rate (95.07%). In greenhouse experiments, T. koningii applied preventively on cucumber inoculated with F. oxysporum f. sp. cucumerinum generated the lowest disease severity index (0.42), mortality (13.33%) and wilting rate (23.33%) and the highest fresh (0.857 g) and dry (0.180 g) weight of root, and root volume (2.04 cm3 ). Based on these results, T. koningii applied preventively against F. oxysporum f. sp. cucumerinum on cucumber plants could be recommended as a biocontrol agent. However, although A. niger was effective against the tested phytopathogen, it is not recommended for biological control due to its carcinogenic properties. Keywords: Biological control, Cucumis sativus, Fusarium oxysporum f. sp. cucumerinum, antifungal potential.