Biological control of early blight of tomato with epiphytic strains of Trichoderma

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Hosseinmardi Maryam; Naeimi Shahram; REZAEE SAEED

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Journal: BIO CONTROL IN PLANT PROTECTION Year:2020 | Volume:7 | Issue:2 (14) Page(s): 1-15

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Title

Biological control of early blight of tomato with epiphytic strains of Trichoderma

Author(s)

Hosseinmardi Maryam | Naeimi Shahram | REZAEE SAEED | Issue Writer Certificate

Keywords

AlternariaQ1

biological controlQ2

fungal epiphytesQ1

greenhouseQ1

Abstract

Early blight incited by Alternaria spp. is one of the destructive diseases of tomato which causes considerable crop yield losses. biological control of the disease with epiphytic fungi as phyllosphere competent microorganisms is a suitable alternative to chemical pesticides. In order to isolating the fungi, healthy tomato plants were collected and small pieces of leaves and stems were placed in distilled water on a shaker and the aliquot was cultured. In search for biocontrol strains, isolated fungi were screened against the fungal pathogen (Alternaria alternata SN1– 1) using dual culture as well as the volatile and non– volatile metabolites tests in vitro and effective isolates were selected to study their efficacy on disease control under greenhouse conditions. Conidial suspension of epiphytic fungi was sprayed two times on the aerial parts of the plant in greenhouse. Two weeks after inoculation of the pathogen, the disease severity was evaluated based on a 0– 9 scale. Results of screening test showed that epiphytic fungi inhibited the mycelial growth of the pathogen in various degrees. Maximum inhibition in dual culture, volatile and non– volatile metabolites tests were 70%, 53% and 68%, respectively. In greenhouse, the least disease indexes were recorded for the isolates F1– 22 and P4– – 1 (81. 4% disease control) together with P1– 1 and P2– 1 (74. 4% disease control). Isolates F1– 22, P4– 1 and P2– 1 identified as Trichoderma harzianum and isolate P1– 1 identified as Trichoderma longibrachiatum.

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APA: Copy

Hosseinmardi, Maryam, Naeimi, Shahram, & REZAEE, SAEED. (2020). Biological control of early blight of tomato with epiphytic strains of Trichoderma. BIO CONTROL IN PLANT PROTECTION, 7(2 (14) ), 1-15. SID. https://sid.ir/paper/408221/en

Vancouver: Copy

Hosseinmardi Maryam, Naeimi Shahram, REZAEE SAEED. Biological control of early blight of tomato with epiphytic strains of Trichoderma. BIO CONTROL IN PLANT PROTECTION[Internet]. 2020;7(2 (14) ):1-15. Available from: https://sid.ir/paper/408221/en

IEEE: Copy

Maryam Hosseinmardi, Shahram Naeimi, and SAEED REZAEE, “Biological control of early blight of tomato with epiphytic strains of Trichoderma,” BIO CONTROL IN PLANT PROTECTION, vol. 7, no. 2 (14) , pp. 1–15, 2020, [Online]. Available: https://sid.ir/paper/408221/en

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