Journal of Crop Protection
Journal of Crop Protection
JCP
Agriculture
http://jcp.modares.ac.ir
1
admin
2251-9041
2251-905X
en
jalali
1393
3
1
gregorian
2014
6
1
3
2
online
1
fulltext
en
Digestive proteolytic and amylolytic activities in Helicoverpa armigera (Lep.: Noctuidae) larvae fed on five host plants
The cotton bollworm, <em>Helicoverpa armigera</em> (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 <em>H. armigera</em> larvae (3<sup>rd</sup> to 5<sup>th</sup> 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 5<sup>th</sup> instar. The highest general protease activity of 3<sup>rd</sup>, 4<sup>th</sup> and 5<sup>th</sup>instar 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 <em>H. armigera</em> 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 <em>H. armigera. </em>Study on digestive proteolytic and amylolytic activities of <em>H. armigera</em> can be used in identifying the antidigestive or antifeedent compounds, which will help us to design appropriate management programs.
Cotton bollworm,Helicoverpa armigera,digestive enzymes,host plants
191
198
http://jcp.modares.ac.ir/browse.php?a_code=A-3-1000-1535&slc_lang=en&sid=3
Fatemeh
Baghery
Fatemeh
Baghery
100319475328460050470
100319475328460050470
No
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-336, Tehran, Iran.
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-336, Tehran, Iran.
Yaghoub
Fathipour
Yaghoub
Fathipour
100319475328460050471
100319475328460050471
Yes
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-336, Tehran, Iran.
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-336, Tehran, Iran.
Bahram
Naseri
Bahram
Naseri
100319475328460050472
100319475328460050472
No
Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran.
Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran.