摘要
为研究发光杆菌NJ菌株对大豆胞囊线虫的生防作用,测定了其代谢物原液及不同浓度稀释液对大豆胞囊线虫卵孵化及二龄幼虫活性的影响。结果表明,在原液、20%、10%、4%稀释液浓度下,对卵孵化的相对抑制率分别是97.30%,84.11%,32.09%,25.41%,与无菌水对照差异显著,而其它稀释度抑制率较低;对二龄幼虫24h的校正死亡率分别是100%,70.97%,50.41%,36.78%,均与无菌水对照差异显著。线虫死亡率随着时间的延长而增加,48h后,4%稀释液线虫校正死亡率高达63.82%,而2%稀释液线虫校正死亡率也达42.95%。72h后2%稀释液的线虫校正死亡率达61.73%。
The effect of NJ metabolites on eggs hatching and juveniles of Heterodera glycines was investigated. The results indicated that the hatching rates of eggs were 97.30% ,84.11% ,32.09% and 25.41% ,suppressed by original ,20% , 10% and 4% diluted solution respectively. The difference between these treatments and water control was significant, but the effect of other diluted solutions was negligible. The corrected mortality rate of J2 were 100% ,70.97% ,50.41% and 36.78% respectively. The mortality of J2 increased over time, after 48 hours the mortality of 4% and 2% were 63.82% and 42.95% respectively. After 72 hours the mortality treated with 2% increased to 61.73%.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2008年第3期370-373,共4页
Chinese Journal of Oil Crop Sciences
基金
国家"十一五"科技支撑计划(2006BAD21B01-15)
