温度、光照和土壤含水量对大豆胞囊线虫休眠卵孵化的影响  

Effect of Temperature,Illumination and Soil Water Content on Hatching of Dormant Eggs of Soybean Cyst Nematode

作　　者：孙晶双[1] 郑雅楠[1] 段玉玺[1] 田丰[1] 陈立杰[1] 

机构地区：[1]沈阳农业大学植物保护学院,辽宁沈阳110161

出　　处：《大豆科学》2009年第4期690-692,共3页Soybean Science

基　　金：现代农业产业技术体系资助项目

摘　　要：研究在实验室条件下不同温度,不同光照和不同土壤含水量对大豆胞囊线虫(SCN)休眠卵孵化的影响。分别测定了5个温度梯度下(18℃、21℃、24℃、27℃和30℃),7个光照条件下(0/24h,4/20h,8/16h,12/12h,16/8h,20/4h和24/0h)和7个土壤含水量(1%、5%、10%、15%、20%、25%和30%)条件下SCN休眠卵的孵化情况。结果表明:在供试温度18～30℃之间,休眠卵的孵化总量随温度升高而增加,30℃下孵化数量最大,达1316.33条。全光照处理的孵化量最大,达745.00条,4L/20D、12L/12D和20L/4D次之,而全黑暗处理的孵化量最少,仅为102.00条。土壤含水量在1%～30%之间,含水量为15%时孵化数量最大,达265.33,含水量在1%～15%时,孵化量随含水量的增加而增加,当含水量大于15%时,孵化量随含水量增加反而降低。研究证实在SCN休眠期可以通过提高温度增加光照时间来诱导卵孵化,以提高J2孵化数量,采用休眠胞囊接种应注意调节土壤含水量。The effects of temperature, illumination and soil water content on dormant eggs of Heterodera glycine were studied in lab. Hatching of the eggs were assayed under 5 tested temperatue（ 18℃ ,21℃ ,24℃,27℃and 30℃ ） ,7 tested illumination conditions （0/24 h ,g/20 h, 8/16 h, 12/12 h, 16/8 h ,20/4 h and 24/0 h）and 7 kinds of soil water contents （1% ,5 %, 10%, 15% ,20% ,25% and 30% ）, respectively. Total number of hatched J2 increased with increasing of temperature among 18 - 30℃ ,and reached 1316.33 under condition of 30℃. Amount of hatched J2 of full illumination treatment reached 745.00,followed by treatments of 4L/20D, 12L/12D and 20L/4D,and that of full dark treatment was the least. Among all water content treatments, hatched J2 reached the most under 15% water content,however the amount of hatched J2 reduced when tested water content over 15%. It is concluded that eggs hatching can be induced by high temperature and long illumi- nation, while regulating soil water content is necessary to inoculation with dormant cysts to soybean.

关 键 词：大豆胞囊线虫 含水量 休眠 孵化 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]