Dr Mohammadamin Samih1, Dr fatemeh Jafarbeighi1, Dr Hossein Alaeai1, Dr Hossein Shirani1, Aria Samih1, Ommolbanin Taheri1

1Vali-e-asr University, Iran

Biography:

I am MohammadAmin Samh a professor in the field of entomology at Vali Asr University in Rafsanjan for 30 years. To pass the Research Sabbaticalو I was at the University of Adelaide for a year. My field of work is ecology and pest management, and so far, I have published about 150 articles in this field

Abstract:

Silverleaf whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) biotypes B is a key pest of tomato plants and eggplants throughout the world. A series of experiments were performed to evaluate the biochemical response of these plants to salicylic acid (SA), β-aminobutyric acid (BABA) and Trichoderma, which affect the performance and preference of B. tabaci. The experiments were carried out in growth chambers set at temperature 27 ± 2 °C, 50 ± 5% RH and 16 L: 8 D h photoperiod. The longest development time and highest mortality rates of whitefly immature stages were recorded for plants treated with RBABA + RT and RSA + RT. In a free-choice assay, B. tabaci adults showed significantly lower preference for settling and oviposition in RBABA + RT and RSA + RT in comparison with control. In no-choice assay, B. tabaci females laid significantly fewer eggs on treatments than those in control. Plants responded to different treatments and showed a higher induction of polyphenol oxidase (PPO), peroxidase (POD), and phenylalanine ammonia lyase (PAL) activities, besides the higher accumulation of phenols in RBABA + RT, RSA + RT and RT treatments. In 4th, 10th and 14th days, the RT + RBABA- and RT + RSA-treated. Modeling results showed that the treated Trichoderma and other treatments (BABA and SA) had the highest effect on the percentage of adults’ eclusion. These results suggest that RBABA + RT and RSA + RT could be utilized for the induction of effective plant defense against B. tabaci.

Keywords: Immature preference, oviposition preference, plant physiological process, modeling, silverleaf whitefly.