نوع مقاله : مقاله پژوهشی
1 دانشجوی کارشناسی ارشد، گروه گیاهپزشکی، دانشگاه شهید باهنر، کرمان، ایران
2 استادیار، گروه گیاهپزشکی، دانشگاه شهید باهنر، کرمان، ایران
عنوان مقاله [English]
In this research, some life table parameters of Schizaphis graminum on Yavaras, Bahar, Akbari, Pishtaz and Omid and wheat lines of R1-10, R3-16, R3-17, and R2-9 were investigated under laboratory conditions in 2016. The daily survival and fertility of aphids were studied in leaf cages. Also tolerance of these cultivars and lines to aphids was calculated based on the amount of some growth parameters such as hight reduction, chlorophyll content, the fresh and dry weight of the plant in contaminated plants compared to healthy plants. Experiments were conducted in a completely randomized design. Survival of the aphids in the early of life was 100%. The highest and lowest life expectancy in the first days of life was on Pishtaz and R1-10 respectively. The lowest intrinsic rate of increase was observed on Yavares (0.262 d-1) and the highest was observed on Pishtaz and R2-9 (0.346 and 0.340 d-1, respectively). Based on the results of tolerance, the lowest percentage of fresh and dry weight reduction were on Yavaras, Bahar, R1-10 and R3-16 and the most were on R2-9 and Pishtaz. Furthermore, the lowest percentage of chlorophyll reduction were observed in Yavaras and R1-10 and the highest in Omid and R2-9. The results showed that Pishtaz and R2-9 were the most susceptible and Yavaras and R1-10 were the most resistant wheat cultivars and lines to S. graminum.