Baghery, Fatemeh, Fathipour, Yaghoub, Naseri, Bahram (2014). Digestive proteolytic and amylolytic activities in Helicoverpa armigera (Lep.: Noctuidae) larvae fed on five host plants. , 3(2), 191-198. doi: 10.48311/jcp.2014.1107
Fatemeh Baghery; Yaghoub Fathipour; Bahram Naseri. "Digestive proteolytic and amylolytic activities in Helicoverpa armigera (Lep.: Noctuidae) larvae fed on five host plants". , 3, 2, 2014, 191-198. doi: 10.48311/jcp.2014.1107
Baghery, Fatemeh, Fathipour, Yaghoub, Naseri, Bahram (2014). 'Digestive proteolytic and amylolytic activities in Helicoverpa armigera (Lep.: Noctuidae) larvae fed on five host plants', , 3(2), pp. 191-198. doi: 10.48311/jcp.2014.1107
Baghery, Fatemeh, Fathipour, Yaghoub, Naseri, Bahram Digestive proteolytic and amylolytic activities in Helicoverpa armigera (Lep.: Noctuidae) larvae fed on five host plants. , 2014; 3(2): 191-198. doi: 10.48311/jcp.2014.1107

Digestive proteolytic and amylolytic activities in Helicoverpa armigera (Lep.: Noctuidae) larvae fed on five host plants

Journal of Crop Protection
Article 9, Volume 3, Issue 2, 2014, Pages 191-198    PDF (178.3 K)
DOI: 10.48311/jcp.2014.1107
Authors
Fatemeh Baghery1; Yaghoub Fathipour* 1; Bahram Naseri2
1Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-336, Tehran, Iran.
2Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran.
Abstract
The cotton bollworm, Helicoverpa armigera (Hübner), is a serious pest on a wide range of economic crops in many parts of the world. In this study, digestive proteolytic and amylolytic activities of H. armigera larvae (3rd to 5th instars) were evaluated on five main host plants including chickpea (cv Hashem), cowpea (cv Mashhad), soybean (cv 033), navybean (cv Dehghan), and corn (cv SC 704) at 25 ± 1 °C, relative humidity of 65 ± 5% and a photoperiod of 16: 8 (L: D) hours. The results indicated that the highest enzyme activity was in 5th instar. The highest general protease activity of 3rd, 4th and 5thinstar larvae was found on corn. The larvae fed on corn had the lowest trypsin activity. This leads to hyperproduction of chymotrypsin and elastase-like enzymes to compensate the inhibition of trypsin. The larvae of H. armigera reared on cowpea had the highest level of amylase activity, and the lowest activity was in the larvae fed on corn. The results revealed that among host plants tested, corn was more resistant (unsuitable) to H. armigera. Study on digestive proteolytic and amylolytic activities of H. armigera can be used in identifying the antidigestive or antifeedent compounds, which will help us to design appropriate management programs.
Keywords
Cotton bollworm; Helicoverpa armigera; digestive enzymes; host plants
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