家系、种子产生部位和土层深度对黄帚橐吾种子萌发出苗的影响  

Effects of family,seed position and burial depth on seed emergence of Ligularia virgaurea

作　　者：王满堂[1] 

机构地区：[1]枣庄学院旅游与资源环境系,山东枣庄277160

出　　处：《草业科学》2010年第8期102-106,共5页Pratacultural Science

基　　金：枣庄学院博士科研启动基金

摘　　要：黄帚橐吾(Ligularia virgaurea)是青藏高原高寒草甸一种典型的毒杂草。本研究主要分析了无光照条件下温度对黄帚橐吾种子萌发的影响,家系、种子产生部位和土层深度对黄帚橐吾种子出苗的影响。结果表明:温度对黄帚橐吾种子萌发率有显著的影响,随着温度升高萌发率下降,变温18/28℃下黄帚橐吾种子萌发率为87.33%,5/15℃下黄帚橐吾种子萌发率最高,达95.33%。土层深度对黄帚橐吾种子出苗率有显著的影响,土层越深,出苗率越低。土层深度为0 cm时,出苗率最高,达61.66%;土层深度为3 cm时,出苗率锐减;土层深度5 cm时,出苗率为0。家系和种子产生部位对黄帚橐吾种子大小、出苗率均有显著的影响。Ligularia virgaurea is a well-known poisonous weed in the alpine meadows of the eastern Qinghai-Tibet plateau.The effect of temperature on seed germination under darkness conditions in a laboratory experiment and the effects of family,seed position and burial depth on seed emergence in pot experiments were studied.The results showed that the effect of temperature on germination percentage was significant and the germination rate decreased with the temperature rising.It was 87.33% while temperature was 18/28 ℃ and 95.33% while the temperature was 5/15 ℃.The emergence percentage was the highest（61.66%） while the burial depth was 0 cm.And it tended lower while the burial depth was 3 cm and was 0 while the burial depth was 5 cm.

关 键 词：家系 土层深度 种子产生部位 出苗 黄帚橐吾 

分 类 号：S452[农业科学—植物保护]