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Antifeedant of sweetpotato whitefly, Bemisia tabaci biotype-Q to the Nokkwang variety of red pepper
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/290793
This study was performed to investigate the feeding behavior of sweetpotato whitefly, Bemisia tabaci using the DC-EPG and the each developmental periods of biotype Q against nine varieties of red pepper. The result was showed that biotype Q did not feed and develop in the Nokkwang variety. In order to analyze the antifeedant, three feeding-preferred varieties (Cheongpungdaegun, Cheonyang, and Sannedeul) and non-preferred variety (Nokkwang) was tested for their sugar compounds using HPLC (ELSD Detector). The detected sugars were erythritol, xylose, xylitol, fructose, glucose, mannitol, and sucrose. In feeding-preferred varieties, the sugar such as erythritol, xylose, and xylitol were present at higher quantity than Nokkwang variety, however, fructose was existed lower quantity than Nokkwang variety. Subsequent bioassay for antifeedant activity, only xylitol showed repelled at lower concentration; however, attracted at higher concentration. Therefore, it is believed that xylitol may play a key role in the variety choice of red pepper by Q biotype of sweetpotato whitefly.
