Screening of different trichoderma isolates as antagonists of various maize phytopathogens
The increasing use of chemical plant protection agents in recent years has become a serious problem. Environmental pollution, non-selectivity, the emergence of resistant species, and chemicals in the food chain, has led to need to find new agents with improved characteristics. One of the solutions i...
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| Dokumentumtípus: | Könyv része |
| Megjelent: |
2020
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| Sorozat: | Proceedings of the International Symposium on Analytical and Environmental Problems
26 |
| Kulcsszavak: | Kémia |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/74001 |
| Tartalmi kivonat: | The increasing use of chemical plant protection agents in recent years has become a serious problem. Environmental pollution, non-selectivity, the emergence of resistant species, and chemicals in the food chain, has led to need to find new agents with improved characteristics. One of the solutions is certainly the use of beneficial microorganisms. The genus Trichoderma is genetically very diverse with a number of capabilities among different strains with agricultural and industrial significance. Maize is an agricultural crop that is susceptible to infections by various phytopathogenic fungi, producers of mycotoxins harmful to humans and animals. Since this agricultural crop has an important place in the human diet, its health safety is very important. In this work, the screening of antagonistic activity of three Trichoderma isolates, isolated from the environment, against the most common maize phytopathogens, was examined using dual culture technique. The results showed that there is a statistically very significant difference between the applied Trichoderma isolates. Using the Scheffe test, it was determined that the isolate of Tricoderma harzianum shows the best effect on the tested phytopathogens of maize by forming Radial Growth Inhibition (RGI) of 100% for Penicilium sp., 53.67% for Helminthosporium carbonum, 52.33% for Fusarium graminearum and 35% for Aspergillus flavus. Considering that Trichoderma spp. isolates were considered as effective when RGI exceeded 50%, from the obtained results it can be concluded that T. harzianum shows a very significant effect on all phytopathogenic isolates. It shows slightly weaker activity only on isolate A. flavus. This result once again confirms the great antagonistic potential of Trichoderma isolates and their use in biological control would contribute to the development of sustainable agricultural production and would affect the healthier environment. |
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| Terjedelem/Fizikai jellemzők: | 224-228 |
| ISBN: | 978-963-306-771-0 |