Consortia of mycorrhizal fungi and rhizobacteria in the biological control of Phythopthora capsici in Capsicum annuum cultivars
Chili wilting or drying is one of the main diseases that causes very considerable losses in the production of the chili crop. The use of chemical fungicides is a common practice promoting resistance and environmental contamination. The reconversion of agriculture demands sustainable alternatives, am...
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| Autores principales: | , , , , , , |
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| Formato: | Online |
| Lenguaje: | spa |
| Publicado: |
Universidad de Sonora
2022
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| Acceso en línea: | https://biotecnia.unison.mx/index.php/biotecnia/article/view/1490 |
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| Sumario: | Chili wilting or drying is one of the main diseases that causes very considerable losses in the production of the chili crop. The use of chemical fungicides is a common practice promoting resistance and environmental contamination. The reconversion of agriculture demands sustainable alternatives, among which the use of rhizospheric fungi = arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (Rpcv) stand out, which are seen as a valuable tool for the protection of crops. horticultural when they are applied through consortia. The general objective of the present investigation consisted in evaluating consortiums of mycorrhizal fungi and rhizobacteria as biological control vs Phythopthora capsici, in cultivars of 23 genotypes of chili peppers, from various agricultural locations in the Mexico country, were evaluated. The AMF that made up the consortium were: six strains of Rhizophagus intraradices with the codes Zac-19, Ced-20, Tab-21, Mér-22, Pap-23 and Jal-24. Likewise, four strains of rhizobacteria were included (Rpcv = Plant growth-promoting rhizobacteria), three of the genus Pseudomonas corresponding to P. lini, P. fluorescens, Acinetobacter guillouiae and one of the genus-species Aeromona caviae. The study treatments were four: T1 = Control (No nutritional contribution (water)), T2 = Consortium = (mixture) of the six AMF, T3 = Consortium of six AMF plus the consortium of four Rpcv, T4 = Chemical fertilization based on a nutrient solution. In the resistance of plants to the attack of P. capsici, They reduced the attack of the fungus P. capsici, in plants of 23 cultivars of chile; The Pasilla-type and Guajillo-type chili cultivars presented the highest resistance to the attack of P. capsici, when they were inoculated with AMF + Rpcv, while the Serrano, Puya and Jalapeño-type chilies were the ones with the highest susceptibility to the attack of the phytopathogenic fungus |
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