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为明确不同温度经历燕麦孢囊线虫的孵化特点,分别于10月初小麦播种时和土壤结冻前即12月底采集大量燕麦孢囊线虫孢囊,在室内离体条件下分别测试不同温度对其孵化的影响。小麦播种时采集的燕麦孢囊线虫经5℃恒温处理的孵化高峰期为处理后第10～12周,比15℃恒温处理推迟了约4周;前期置于5℃培养,然后再转至15℃处理的孢囊,5℃处理时间越长,孵化高峰期越滞后;此外,随着5℃低温处理时间的增加,其总孵化率具有增加的趋势。12月底采集的孢囊在5～30℃条件下均有孵化,其最佳孵化温度为20℃,在此温度下其总孵化率最高,且孵化期最短;25℃以上高温对卵的孵化具有显著的抑制作用。
In order to clarify the hatching characteristics of oat cyst nematode at different temperatures, a large number of cyst nematode cysts were harvested before sowing in early October and before the end of December, respectively. The cysts were hatched at different temperatures under in vitro conditions Impact. The peak period of hatching of Oat cyst nematode collected at the time of wheat sowing was 5 ~ 10h after the treatment, which was delayed by about 4 weeks than the constant temperature of 15 ℃. The pre-incubation at 5 ℃ and then to 15 ℃ treatment of cysts, 5 ℃ treatment time, the lag peak incubation time; In addition, with the 5 ℃ low temperature treatment time, the total hatching rate has an increasing trend. The cysts collected at the end of December all hatched at 5 ~ 30 ℃, and the optimal hatching temperature was 20 ℃. The total hatching rate was the highest at this temperature and the hatching period was the shortest. The hatching of eggs at 25 ℃ and above had Significant inhibitory effect.