Nutritional indices of the cotton bollworm, Helicoverpa armigera, on 13 soybean varieties
1Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P.O. Box 14115-336, Tehran, Iran
2Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran
Abstract
The effects of 13 soybean varieties (356, M4, M7, M9, Clark, Sahar, JK, BP, Williams, L17, Zane, Gorgan3, and DPX) on nutritional indices of the cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), were determined at 25 ± 1° C, 65 ± 5% RH and a photoperiod of 16:8 L:D. Fourth instar larvae reared on Zane showed the highest efficiency of conversion of digested food (ECD) and approximate digestibility (AD) values (0.299 and 0.867, respectively) compared with other varieties. The lowest value of ECD and food consumed (FC) was on 356 (0.133 and 53.82 mg, respectively). The highest and lowest efficiency of conversion of ingested food (ECI) of fifth instar larvae (0.235 and 0.151, respectively) were on Zane and M4, respectively. The ECI and ECD values of whole larval instars were the highest on M7 (0.524 and 0.820, respectively) and lowest on Sahar (0.279 and 0.353, respectively). However, the highest and lowest value of consumption index (CI) was on M7 (7.351) and BP (3.462). Among the different varieties of soybean, the highest AD value was on M9 (0.858), and the lowest was on Zane (0.597). The results indicated that M4, Sahar, and JK were partially resistant to H. armigera.
Keywords: antibiosis, food consumption, insect weight, Noctuidae, soybean resistance
Abbreviations: AD, approximate digestibility; CI, consumption index; ECD, efficiency of conversion of digested
food; ECI, efficiency of conversion of ingested food
Correspondence:
*fathi@modares.ac.ir
Associate Editor: Allen Cohen was editor of this paper.
Received: 18 December 2008 | Accepted: 28 June 2009 | Published: 13 September 2010
Copyright: This is an open access paper. We use the Creative Commons Attribution 3.0 license that permits unrestricted use, provided that the paper is properly attributed.
ISSN: 1536-2442 | Volume 10, Number 151
Naseri B, Fathipour Y, Moharramipour S, Hosseininaveh V. 2010. Nutritional indices of the cotton bollworm, Helicoverpa armigera, on 13 soybean varieties. Journal of Insect Science 10:151, available online: insectscience.org/10.151
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