目的:缩短云南重楼种子萌发和出苗所需时间,提高其出苗率;提出在生产中切实可行的云南重楼种子有性繁殖育苗方法。方法:考察不同温度、不同播种方式(播种时间、覆土厚度、地膜覆盖)等因素对云南重楼种子萌发和出苗的影响。结果:云南重楼种子胚后熟和萌发的最适温度在18~20 ℃,在此温度下处理3~4个月以后,转至0~10 ℃低温处理2~4个月,可在翌年4月出苗;适宜的播种时间是4月份以前,育苗土覆盖厚度为1 cm左右,播种后用黑色地膜进行覆盖,可提高出苗率。结论:上述试验结果可为云南重楼种子育苗提供操作参考。
OBJECTIVE: To shorten the duration of seed germinating, improve seed emergence and eventurally to establish a practical method for seeding of Paris polyphylla var. yunnanensis seed. METHOD: To study the effect of some factors (temperature, sowing time, covering-soil depth, plastic film ) on seed emergence of P. polyphylla var. yunnanensis. RESULT: The most suitable temperature for embryonic post-maturity and seed germinating is 18-20 degrees C. Paris seed could emerge in April when it was transfer to a low temperature 0-10 degrees C for 2-4 months after being treated under 18-20 degrees C for 3-4 months. For seed emergence, the best sowing time was before April. The suitable soil depth was about 1 cm. It is a better way to cover the seedling bed with black plastic film for improving the emergence percentage. CONCLUSION: Above results provide seedling techniques of P. polyphylla var. yunnanensis.