온도와 뿌리 추출물이 사탕무씨스트선충, Heterodera schachtii의 부화와 발육에 미치는 영향

Sugar beet cyst nematode, Heterodera schachtii, has recently been identified as a severe pest of Chinese cabbage field in the highland area of Korea. In this experiment, we tried to find out the effect of temperature and Chinese cabbage root extract in egg hatching as well as egg development of the nematode. Five different temperature conditions, 10, 15, 20, 25 and 30℃, with growth chamber were used to find the suitable hatching temperature where 25℃ showed the maximum egg hatching rate. However, 10 and 15℃ showed negligible hatching rate. In contrast, 20, 30 and 40 days-aged-Chinese cabbage root extracts were used for hatching in 25℃ climate chamber, where 20 days extract showed the highest hatching rate and 40 days presented the lowest egg hatching effect. To justify furthermore, egg development stages test carried out with 20 and 25℃ temperatures, where the egg development stage perform faster in 20 than 25℃.