Yellow stem borer(YSB),Scir-pophaga incertulas(Walker)has be-come the main rice insect pest onceagain along the Changjiang Riversince 1990s.Unfortunately,no ricevariety with resistance to YSB hasbeen reported so far.J...Yellow stem borer(YSB),Scir-pophaga incertulas(Walker)has be-come the main rice insect pest onceagain along the Changjiang Riversince 1990s.Unfortunately,no ricevariety with resistance to YSB hasbeen reported so far.Japonica Zhen-dao 2 with moderate resistance toYSB was found.In 10 rice vari-eties with different resistance levels,YSB individuals showed distinct de-velopmental rates,and the asyn-chronous development even occurredin the same rice variety.In this展开更多
Sugarcane tip borer, Scirpophaga excerpalis Walker, is one of the destructive pests in sugarcane fields. It is distributed in Guangdong, Guangxi and Taiwan provinces of China, and also in Southeast Asia and South Asia...Sugarcane tip borer, Scirpophaga excerpalis Walker, is one of the destructive pests in sugarcane fields. It is distributed in Guangdong, Guangxi and Taiwan provinces of China, and also in Southeast Asia and South Asia. Attractant activities of the crude extract of abdominal tips of the female moth have been studied by REN Da-fang, one of the authors (unpublished data). It has shown that the extract after liquid chromatographic separation revealed attractant activities in field tests. This note describes the chemical structure and field tests of the sex pheromone of this species.展开更多
文摘Yellow stem borer(YSB),Scir-pophaga incertulas(Walker)has be-come the main rice insect pest onceagain along the Changjiang Riversince 1990s.Unfortunately,no ricevariety with resistance to YSB hasbeen reported so far.Japonica Zhen-dao 2 with moderate resistance toYSB was found.In 10 rice vari-eties with different resistance levels,YSB individuals showed distinct de-velopmental rates,and the asyn-chronous development even occurredin the same rice variety.In this
文摘Sugarcane tip borer, Scirpophaga excerpalis Walker, is one of the destructive pests in sugarcane fields. It is distributed in Guangdong, Guangxi and Taiwan provinces of China, and also in Southeast Asia and South Asia. Attractant activities of the crude extract of abdominal tips of the female moth have been studied by REN Da-fang, one of the authors (unpublished data). It has shown that the extract after liquid chromatographic separation revealed attractant activities in field tests. This note describes the chemical structure and field tests of the sex pheromone of this species.