Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae)
The efficiency of natural enemies as the key factor in the success of biological control programs, depends on different elements including the quality of their herbivore hosts. Similarly, it may be influenced by nutritional status and genetic differences of host plants in turn. This study was undert...
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| Format: | Article |
| Language: | English |
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Entomological Society of Iran
2019-08-01
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| Series: | نامه انجمن حشرهشناسی ایران |
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| Online Access: | https://jesi.areeo.ac.ir/article_120377_d0bf811cd1a56dce1c434ee5a7ab2066.pdf |
| _version_ | 1797973770165551104 |
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| author | F. Salehi J. Shirazi Gh, H. Gharekhani N. Vaez |
| author_facet | F. Salehi J. Shirazi Gh, H. Gharekhani N. Vaez |
| author_sort | F. Salehi |
| collection | DOAJ |
| description | The efficiency of natural enemies as the key factor in the success of biological control programs, depends on different elements including the quality of their herbivore hosts. Similarly, it may be influenced by nutritional status and genetic differences of host plants in turn. This study was undertaken to determine the parasitism efficiency of Trichogramma principium (Sugonjaev & Sorokina) on the eggs of Helicoverpa armigera (Hübner) reared on different nitrogen fertilized tomato plant cultivars. All experiments were established in a growth chamber under 25 ± 1°C temperature, 60 ± 5% RH, 16:8 h. (L:D) conditions. Treatments included six tomato cultivars (Kingston, Riogrand, Earlyurbana, Redston, Superstrain-B and Primoearly) with four N levels (0, 2.1, 3.0, 3.9 g/ pot, Nitrogen as Urea 46%), in 5 replications. The value of the net parasitism rate (C0) of T. principium varied from 13.42±1.00 to 23.39± 2.59 hosts on the eggs of H. armigera reared on En0, and SBn+, respectively. The transformation rate from host population to parasitoid offspring (Qp) on all treatments was close to 1 (C0 ≅ R0). The finite parasitism rate (ω) which is used to determine the efficiency of a parasitoid, estimated as 0.1525 (min.) and 0.3164 (max.) hosts parasitoid-1 day-1 on the hosts reared on Earlyurbana and Superstrain-B, respectively. In general, T. principium had higher parasitism capacity on the hosts reared on Superstrain-B, Kingston and Riogrand with highest N levels, which were more suitable for parasitoid. This study showed that parasitism capacity of parasitoid was influenced by the host plant cultivar as well as positively correlated with the host plant nitrogen contenets. |
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| format | Article |
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| institution | Directory Open Access Journal |
| issn | 0259-9996 2783-3968 |
| language | English |
| last_indexed | 2024-04-11T04:09:29Z |
| publishDate | 2019-08-01 |
| publisher | Entomological Society of Iran |
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| spelling | doaj.art-49069923143242f48bf143e1ebb5b06a2023-01-01T10:06:25ZengEntomological Society of Iranنامه انجمن حشرهشناسی ایران0259-99962783-39682019-08-0139216518410.22117/jesi.2019.125483.1298120377Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae)F. Salehi0J. Shirazi1Gh, H. Gharekhani2N. Vaez3Plant Protection Dep.Faculty of Agriculture, University of Maragheh, Maragheh, IranIranian Research Institute of Plant Protection; Agricultural Research, Education and Extension Organi-zation (ARREO), Tehran, IranPlant protection Dep. Faculty of Agriculture, University of Maragheh, Maragheh, IranDepartment of Plant Protection, Faculty of Agriculture, Azarbaijan Shahid Madani University, IranThe efficiency of natural enemies as the key factor in the success of biological control programs, depends on different elements including the quality of their herbivore hosts. Similarly, it may be influenced by nutritional status and genetic differences of host plants in turn. This study was undertaken to determine the parasitism efficiency of Trichogramma principium (Sugonjaev & Sorokina) on the eggs of Helicoverpa armigera (Hübner) reared on different nitrogen fertilized tomato plant cultivars. All experiments were established in a growth chamber under 25 ± 1°C temperature, 60 ± 5% RH, 16:8 h. (L:D) conditions. Treatments included six tomato cultivars (Kingston, Riogrand, Earlyurbana, Redston, Superstrain-B and Primoearly) with four N levels (0, 2.1, 3.0, 3.9 g/ pot, Nitrogen as Urea 46%), in 5 replications. The value of the net parasitism rate (C0) of T. principium varied from 13.42±1.00 to 23.39± 2.59 hosts on the eggs of H. armigera reared on En0, and SBn+, respectively. The transformation rate from host population to parasitoid offspring (Qp) on all treatments was close to 1 (C0 ≅ R0). The finite parasitism rate (ω) which is used to determine the efficiency of a parasitoid, estimated as 0.1525 (min.) and 0.3164 (max.) hosts parasitoid-1 day-1 on the hosts reared on Earlyurbana and Superstrain-B, respectively. In general, T. principium had higher parasitism capacity on the hosts reared on Superstrain-B, Kingston and Riogrand with highest N levels, which were more suitable for parasitoid. This study showed that parasitism capacity of parasitoid was influenced by the host plant cultivar as well as positively correlated with the host plant nitrogen contenets.https://jesi.areeo.ac.ir/article_120377_d0bf811cd1a56dce1c434ee5a7ab2066.pdfbiological controlparasitism capacitynitrogen fertilizationtri-trophic interactions |
| spellingShingle | F. Salehi J. Shirazi Gh, H. Gharekhani N. Vaez Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae) نامه انجمن حشرهشناسی ایران biological control parasitism capacity nitrogen fertilization tri-trophic interactions |
| title | Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae) |
| title_full | Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae) |
| title_fullStr | Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae) |
| title_full_unstemmed | Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae) |
| title_short | Influence of nitrogen level and tomato cultivars on the efficiency of Trichogramma principium (Hymenoptera: Trichogrammatidae) on the eggs of Helicoverpa armigera (Lepidoptera: Noctuidae) |
| title_sort | influence of nitrogen level and tomato cultivars on the efficiency of trichogramma principium hymenoptera trichogrammatidae on the eggs of helicoverpa armigera lepidoptera noctuidae |
| topic | biological control parasitism capacity nitrogen fertilization tri-trophic interactions |
| url | https://jesi.areeo.ac.ir/article_120377_d0bf811cd1a56dce1c434ee5a7ab2066.pdf |
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