野生泸定百合种子休眠和萌发习性的研究  

Study on Dormancy and Germination Characters of Wild Lily (Lilium sargentiae Wilson) Seed

作　　者：何丽萍[1] 李龙根[1] 庞祖云[1] 

机构地区：[1]云南农业大学农学与生物技术学院,昆明650201

出　　处：《种子》2010年第4期46-49,共4页Seed

摘　　要：野生泸定百合属于百合科百合属多年生草本植物,其药用和园艺观赏价值极高,自然条件下泸定百合种子的萌发率极低,主要依靠幼芽鳞茎的形式来繁殖后代。为研究和确定云南野生泸定百合种子休眠和萌发的习性,本研究设置了不同光照、不同温度条件下种子的萌发试验,具体为在有光照(光照12 h/d)和无光照的黑暗条件下,分别设置了恒温20℃、30℃和20～30℃变温时种子的萌发试验;设置了5℃低温层积处理后种子的发芽试验,层积时间分别为7、14、21、28d和60 d;以及100 mg/L赤霉素处理后,种子于光照和黑暗条件下的发芽试验。结果表明:恒温20℃和20～30℃变温的黑暗条件,适宜野生泸定百合种子的萌发,表现为萌发时间最短、发芽率达到了最高(45%);100 mg/L的GA3处理对种子的萌发有明显促进作用,可加快和缩短种子萌发时间,提高种子发芽率;而5℃的低温层积对野生泸定百合种子的萌发在萌发时间和发芽率方面没有明显促进作用。Wild Luding lily is Liliaceae Lilium perennial herbs,with very high medicinal and ornamental value.Under natural conditions Luding lily seed germination rate is very low,mainly depend on the bud bulbs reproducing.For study the wild Luding lily seed dormancy and germination characters,different constant temperature 20 ℃,30 ℃ and variable temperature 20 ℃ to 30 ℃ were studied under light（day light 12 hr per day） and dark conditions.stratified for 7,14,21,28 d and 60d at 5 ℃,respectively.And treated with 100 mg/L GA3 as well as.The results showed that： constant 20 ℃ and variable 20 ℃ to 30 ℃ under dark conditions were optimum condition for wild Luding lily seed germination,with the shortest germination time and the highest germination rates 45%;also 100 mg/L of GA3 treatment on seed germination significantly improved.but 5 ℃ stratification treatment had no significant facilitating role for the wild Luding lily seed germination.

关 键 词：泸定百合 萌发 温度 黑暗 低温层积 赤霉素 

分 类 号：S644.1[农业科学—蔬菜学]