Disease responses of different tomato (Solanum lycopersicum L.) cultivars inoculated with culture filtrates of selected fungal pathogens

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Website:www.vegetosindia.org
Pub Email: contact@vegetosindia.org
Doi: 10.1007/s42535-019-00095-4
First Page: 166
Last Page: 171
Views: 583


Keywords: Culture filtrates, Fungal pathogens, Tomato cultivars, Susceptibility, Resistance


Abstract


This study evaluates the responses of different tomato cultivars to disease initiation by cell-free culture filtrates (CFCFs) of selected fungal pathogens. Twenty-one days old culture filtrates of four fungal pathogens; Alternaria triglochinicola, Aureobasidium pullulans, Pythium ultimum and Sclerotium rolfsii grown on Potato Sucrose Broth were tested against four tomatoes; Roma Savanna, Tropimech, Riogrande and Roma VF. Seed germination was inhibited by filtrates of Alternaria triglochinicola and Pythium ultimum. Plant heights were lower in Roma Savanna seedlings treated with filtrates of Sclerotium rolfsii (3.27 cm), and Alternaria triglochinicola (3.30 cm); Riogrande seedlings treated with filtrates of Pythium ultimum (2.22 cm) and Alternaria triglochinicola (2.46 cm), compared to controls (3.7 cm and 2.56 cm). Roma Savanna and Riogrande cultivars showed 25% and 50% necrotic responses respectively to Alternaria triglochinicola, while Roma VF showed 50.00% response to Aureobasidium pullulans. Differences in foliar symptoms induced by CFCFs of different fungal pathogens on the studied tomato cultivars were significant (P ≤ 0.05).


Culture filtrates, Fungal pathogens, Tomato cultivars, Susceptibility, Resistance


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Acknowledgements


We appreciate the Nigerian Tertiary Education Trust Fund (Tetfund) for providing the grant for this study, and the Management of Federal University Lafia for providing an enabling environment for the successful completion of the study.


Author Information


Terna T. P.
Department of Botany, Federal University of Lafia, Lafia, Nigeria

Akomolafe G. F.
Department of Botany, Federal University of Lafia, Lafia, Nigeria
gfakomolafe@yahoo.com

Ubhenin A.
Department of Biochemistry, Federal University of Lafia, Lafia, Nigeria


Abok J.
Department of Chemistry, Federal University of Lafia, Lafia, Nigeria