| Effect of plant growth promoting rhizobacteria (PGPR) and micronutrients on wheat secondary metabolites and life table parameters of Sitobion avenae (Fabricius) under greenhouse conditions |
| Paper ID : 1054-3IICE (R1) |
| Authors: |
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maryam pourya *1, Jahanshir Shakarami2, Mozhgan Mardani-Talaee2 1Department of Plant Protection, faculty of agriculture, university of Lorestan Khoramabad, Iran 2Department of Plant Protection, College of Agriculture, Lorestan University, Khorramabad, Iran |
| Abstract: |
| English grain aphid, Sitobion avenae (Fabricius) (Hem.: Aphididae), is an important pest of cereal that severe damage in cereal field throughout the world. Using fertilizers can be a key factor for pest management strategy in plant protection system. In this research, the effect of Probio and Biofarm as plant growth promoting rhizobacterial (PGPR), as well as Librel Zinc and α-Iron (α-Fe) spray as two micronutrient fertilizers compared with no treatment as control were investigated on secondary metabolites of wheat leaves and life table parameters of S. avenae in greenhouse conditions [set at 25±5 oC, 60±5 % RH and 16:10 (L: D) h]. The life table parameters were calculated based on the age-stage, two-sex life table and the method described by Chi’s equations and bootstrap technique. There were significant differences among of secondary metabolites in wheat leaves that had grown on various fertilizer treatments. The highest phenol and anthocyanin contents of wheat leaves were recorded on Biofarm treatment (343.73 and 2.23 mg/ml, respectively) and the lowest amount ones were observed on Librel Zinc treatment (206.96 and 1.83 mg/ml, respectively). Life table parameters of S. avenae were also significantly affected by different treatments. The lowest fecundity of S. avenae was recorded on plants treated with Biofarm and Porobio treatments (5.33 and 9.16 offspring, respectively) and highest values was observed on α-Iron treatment (35.32 offspring). The net reproductive rate (R0) of aphid fed on plants treated with different treatments varied from 4.58 to 25.44 offspring individual-1, with the lowest and highest values on Probio and Librel Zinc treatments, respectively. The lowest and highest values of intrinsic rate of increase (r) and finite rate of increase (λ) of S. avenae were obtained on Biofarm (0.018 and 1.056 day-1) and Librel Zinc (0.139 and 1.056 day-1) treatments, respectively. Thus, it was concluded that Biofarm in wheat plants can induce resistance to S. avenae that can be a suitable eco-friendly strategy to manage of the aphid. |
| Keywords: |
| Interaction plant- pest, Sitobion avenae, Induces resistance, Age-stage, two-sex life table |
| Status : Paper Accepted (Poster Presentation) |
