摘要
比较研究了采自菲律宾国际水稻研究所室内长期用水稻抗性品种 Mudgo驯化的褐飞虱生物型 2和从广西田间褐飞虱种群中分离获得的田间生物型 2的致害性、在不同抗性品种上的生长发育和生殖等特性。结果表明室内和田间生物型 2对 Mudgo和 IR2 6的致害能力相同 ,即两者均能成功地致害含 Bph1基因的水稻品种 ,但田间生物型 2对 ASD7和 IR36的致害性明显比室内生物型 2强 ,说明两者在具有抗性 bph2的水稻品种上的致害性有差异。取食不同抗性品种时 ,田间生物型 2的若虫历期均比取食相同品种的室内生物型 2短 ,两个生物型 2在取食 ASD7时的若虫历期最长、存活率最低、雌成虫体重最轻、产卵量和蜜露量最少、种群增长指数和营养指数最低。取食 IR2 6的田间生物型 2的若虫存活指数和种群增长指数均明显高于取食 IR2 6的室内生物型 2的指数 ,同时也显著高于取食 Mudgo的生物型 2。建议在进行褐飞虱致害性监测和水稻品种抗性评价时以选用 IR2 6为宜。
The bionomics of biotype 2 population of brown planthopper (BPH), Nilaparvata lugens Stal, was compared between BPH population continuously reared on rice resistant variety Mudgo and BPH population purified from paddy-field population collected in Guangxi Province, China. The results indicated that both populations could infest rice varieties Mudgo and IR26 bearing resistant gene Bph1, however, the biotype 2 population from field had higher virulence to rice variety ASD7 and IR36 with resistant gene bph2 than those from greenhouse. The biotype 2 population reared in greenhouse had longer nymphal duration than those from paddy field when they were caged on different rice resistant varieties. Both biotype 2 populations had the lowest nymphal survival, weight of female adult, fecundity, honeydew, net reproductive rate, and the longest nymphal duration on resistant variety ASD7. A significantly higher nymphal survival index and net reproductive rate were found on rice resistant variety IR26 in field population than those in greenhouse population. It is suggested that the variety IR26 should be as an optimal resistant rice variety to monitor the virulence of BPH population and evaluate the resistance of rice to BPH.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2002年第1期89-92,共4页
Chinese Journal of Rice Science
基金
国家"九五"科技攻关项目
浙江省"九五"科技攻关项目
浙江省自然科学基金资助项目
