Effects of Different Temperatures on the Biology of Acyrthosiphon pisum on Different Pea Cultivars

Abstract

The research studies were carried out at Key Laboratory of Entomology, Northwest A & F University, Yangling, Shaanxi under 60±5% Relative Humidity, light: dark photoperiod at 14h: 10h to assess different range temperature effects on the population of Acyrthosiphon pisum on different pea cultivars during, 2018. The results indicated that the shortest pea aphid nymph development period up to (5.75±0.31 days) were lasted on cv. Feizai-3 at 36oC and longest (9.38±0.34 days) were noted on cv. Nenzao at 30oC. The shortest A. pisum adult development period (4.16±0.20 days) were recorded on cv. Hanyi-401 at 39oC and the longest (5.72±0.33 days) on cv. Hanyi-401 at 30oC. The shortest A. pisum longevity period (5.43±0.72 days) were recorded on cv. Feizai-3 at 39oC and longest (11.83±0.72 days) on cv. Hanyi-401 at 30oC. The shortest A. pisum oviposition period (3.61±0.32 days) were recorded on cv. Hanyi-401 at 33oC and longest (4.41±0.35 days) on Guangzhong-604 at 36oC. The minimum nymph survival period was counted (0.23±0.07) on Guangzhong-604 at 36oC and maximum on cv. Hanyi-401 (0.73±0.08) at 30oC. According to the DMRT, Test, non-significant difference was reported in all the above parameters between the cultivars in all temperature regimes. The present study suggests that temperature fluctuations also affect on the life expectancy of A. pisum. In future endeavors more work should be carried out to restrict the pest population of sap-sucking insects to secure the legumes varieties