Effects of Anti-Juvenile Hormone, Precocene-I, on Egg Development of Sunn Pest, Eurygaster integriceps, and Its Progenies

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Kafi Farashah f.; FARAZMAND H.; VAFAEI SHOUSHTARI R.; Golmohammadi gh.; SANATGAR E.

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Journal: JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST) Year:2018 | Volume:20 | Issue:5 Page(s): 979-986

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Title

Effects of Anti-Juvenile Hormone, Precocene-I, on Egg Development of Sunn Pest, Eurygaster integriceps, and Its Progenies

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Keywords

Juvenile hormone inhibitorQ3

Nymphal mortalityQ3

PesticideQ3

7-methoxy-2Q3

2-dimethyl chormeneQ3

Abstract

The Sunn pest, Eurygaster integriceps Puton (Hemiptera: Scutelleridae), is a key pest of wheat in Iran. The nymphs and adults reduce wheat yield quality and quantity by feeding on leaves, stems, and grains. Pesticide application is the main method of Sunn pest control. Precocene, a Juvenile hormone inhibitor, exerts cytotoxic effects on corpora allata of insects' species. . In this research, the effect of precocene-I (7-methoxy-2, 2-dimethyl chormene) on Sunn pest egg development and subsequent progenies was evaluated in the laboratory. Concentration range on eggs bioassay was 1, 5, 10, 20, and 50 μ g mL-1. The results of bioassay tests on 2-and 5-day old eggs showed that LC50 values were 15. 4 and 15 μ g mL-1, respectively. Therefore, old eggs were more sensitive than young eggs. The effects of LC30 and LC50 of precocene-I on the egg and Nymphal mortality were significantly stronger than the control, and the highest mortality rates in the first and third instars were 14. 28 and 13. 26%, respectively. Also, precocene-I did not affect embryonic period, but increased nymphal period (39. 3 days), compared to the control (34. 8 days). Morphological changes on nymphs that emerged from treated eggs included large wings and hemelytron. The fifth instars showed deformed scutellum. Also, typically, some old cuticules were not completely separated.

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APA: Copy

Kafi Farashah, f., FARAZMAND, H., VAFAEI SHOUSHTARI, R., Golmohammadi, gh., & SANATGAR, E.. (2018). Effects of Anti-Juvenile Hormone, Precocene-I, on Egg Development of Sunn Pest, Eurygaster integriceps, and Its Progenies. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), 20(5 ), 979-986. SID. https://sid.ir/paper/63013/en

Vancouver: Copy

Kafi Farashah f., FARAZMAND H., VAFAEI SHOUSHTARI R., Golmohammadi gh., SANATGAR E.. Effects of Anti-Juvenile Hormone, Precocene-I, on Egg Development of Sunn Pest, Eurygaster integriceps, and Its Progenies. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST)[Internet]. 2018;20(5 ):979-986. Available from: https://sid.ir/paper/63013/en

IEEE: Copy

f. Kafi Farashah, H. FARAZMAND, R. VAFAEI SHOUSHTARI, gh. Golmohammadi, and E. SANATGAR, “Effects of Anti-Juvenile Hormone, Precocene-I, on Egg Development of Sunn Pest, Eurygaster integriceps, and Its Progenies,” JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), vol. 20, no. 5 , pp. 979–986, 2018, [Online]. Available: https://sid.ir/paper/63013/en

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