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University of Mohaghegh Ardabili (2017)

Effect of different wheat cultivars on population growth patameters of lesser grain borer, Rhyzopertha dominica (Coleoptera : Bostrichidae)

Rasi Roshanagh, Bahman and Golizadeh, Ali and Hassanpour, Mahdi and Fathi, Seyed Ali Asghar and Abedi, Zahra

Titre : Effect of different wheat cultivars on population growth patameters of lesser grain borer, Rhyzopertha dominica (Coleoptera : Bostrichidae)

تأثیر ارقام مختلف گندم روی پارامتر¬های رشد جمعیت سوسک کشیش Rhyzopertha dominica (Coleoptera : Bostrichidae)

Auteur : Rasi Roshanagh, Bahman and Golizadeh, Ali and Hassanpour, Mahdi and Fathi, Seyed Ali Asghar and Abedi, Zahra

Université de soutenance : University of Mohaghegh Ardabili

Grade : Master 2017

Résumé
The lesser grain borer, Rhyzopertha dominica (Coleoptera : Bostrichidae), is one of the important pest of grains in Iran and many countries in tropical regions. In this survey, the effect of different ten wheat cultivars including Bezostaya, Gaskojen, Kouhdasht, Mihan, Orum, Pishgam, Sabalan, Saysonz, Takaab and 9009 was studied on population growth parameters of R. dominica under laboratory conditions (28±2 °C, 60±5% RH, and photoperiod of 14L : 10D h). Moreover, some physical and biochemical characteristics of wheat seeds were measured and any possiple correlations between the and life history parameters were examined. According to the obtained results, the longest total larval and pupal period and total development time of R. dominica were on cultivar Bezostaya (35.00 ± 0.63 and 41.79 ± 0.72 day), respectively and shortest one was on cultivar Saysonz (30.03 ± 0.57 and 36.98 ± 0.69 day). The highest total fecundity and female adult longevity were on cultivar Takaab (124.76 ± 15.15 egg and 105.00 ± 10.47 day), and the shortest was on cultivar Kouhdasht (27.61 ± 2.99 egg and 39.33 ± 3.35 day). The lowest value of the gross reproductive rate (GRR), net reproductive rate (R0), were obtained on cultivar Kouhdasht (16.75 ± 0.13 and 8.35 ± 0.08 Female/female), and the highest was on cultivar Takaab (70.57 ± 0.58 and 51.83 ± 0.45 Female/female). The lowest value of intrinsic rate of increase (rm) and finite rate of increase (λ) of the R. dominica were observed on cultivar Kouhdasht (0.0440 ± 0.0002 and 1.0449 ± 0.0002 day-1), respectively, and the highest was on cultivar Takaab (0.0792 ± 0.0001 and 1.0823 ± 0.0001 day-1) respectively. Not significant correlations were observed between life history parameters and physical and biochemical traits of wheat cultivars. The findings showed that among the tested wheat cultivars, cultivar Kouhdasht is a unsuitable and cultivar Takaab is a suitable host for feeding of R. dominica.

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