Effect of barely cultivars and lines on biological characteristics and activity of some digestive enzymes of Rhyzopertha dominica (Coleoptera: Bostrichidae)

Nemati-Kalkhoran, Maryam and Razmjou, Jabraeil and Naseri, Bahram and Golizadeh, Ali and Borzoui, Ehsan (2017) Effect of barely cultivars and lines on biological characteristics and activity of some digestive enzymes of Rhyzopertha dominica (Coleoptera: Bostrichidae). Masters thesis, University of Mohaghegh Ardabili.

Text (تأثیر ارقام مختلف جو روی پارامترهای زیستی و فعالیت برخی از آنزیم‌های گوارشی سوسک کشیشRhyzopertha dominica (Coleoptera: Bostrichidae)) Maryam Nemati-Kalkhoran.pdf Download (1MB)

Abstract

The lesser grain borer, Rhyzopertha dominica (Coleoptera: Bostrichidae), is one of the important pests of grains in Iran and many countries of the world. In this survey, the effect of different barley cultivars and lines including EBYT-92-1, EBYT-92-10, EBYT-92-8, EBYT-92-7, EBYT-92-6, EBYT-92-5, EBYT-92-4, EBYT-92-2, Bahman, Dasht, Sahra and Mahoor was studied on two-sex life table parameters and activity of some digestive enzymes (protease and α-amylase) of R. dominica under laboratory conditions (28±1 °C, 60±5% RH, and photoperiod of 16L: 8D h). According to the obtained results, the longest development time of R. dominica was on cultivar Bahman and shortest one was on cultivars Mahoor and Sahra. The highest total fecundity was on cultivar Sahra. The lowest values of the gross reproductive rate (GRR) and net reproductive rate (R0) of the R. dominica were observed on cultivars Bahman and Dasht, and the highest was on cultivar Mahoor. The lowest and highest intrinsic rate of increase (rm) was on cultivars Dasht and Mahoor, respectively. The amylolytic and proteolytic activity of adults in optimal pH was the highest on cultivar Mahoor and line EBYT-92-10. The findings showed that among the tested barley cultivars and lines, cultivar Dasht is unsuitable and cultivar Mahoor is suitable host for feeding of R. dominica. Keywords: Rhyzopertha dominica, biological parameters, digestive enzymes, barley cultivars and lines

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