摘要
采用NaOH浸泡、H2SO4浸泡、物理摩擦(细砂纸摩擦)及清水浸泡4种方法对不同成熟状态的三点金Desmodium triflorum种子进行处理,结果表明:NaOH溶液浸泡处理三点金种子最佳质量分数和时间组合是0.5%NaOH浸泡10 min,发芽率达58%;H2SO4溶液浸泡处理三点金种子最佳质量分数和时间组合是0.5%H2SO4浸泡3 min和5%H2SO4浸泡1 min,发芽率均达到48%;细砂纸摩擦5 min的三点金种子平均发芽率最高,达到58%;清水浸泡48 h对照发芽率仅达38%。结果还表明:完熟期的种子发芽率为55%,高于枯熟期(47%)和黄熟期(42%)的种子发芽率。
Desmodium triflorum seeds collected in different maturing stage were treated with four chemical or physical methods,including NaOH soaking,H2SO4 soaking,physical scarification with fine sandpaper,and water soaking as control.The combination of meathod and timing for optimal germination were 0.5% NaOH for 10 minutes（58% seeds germinated）,0.5% H2SO4 for 3 minutes or 5% H2SO4 for 1 minutes（48%）,and Physical scarification for 5 minutes（58%）,all of which were higher than the control（38%）.Germination rate in full ripe stage（55%） was higher than that in cribbing maturing（47%） and over matury stage（42%）.
出处
《草业科学》
CAS
CSCD
北大核心
2010年第5期91-96,共6页
Pratacultural Science
基金
深圳市"野生豆科草坪植物三点金繁殖机理及成套技术研究"(200735)
关键词
三点金
豆科植物
种子萌发
物理因素
化学因素
Desmodium triflorum
legume
seed germination
physical factor
chemical factor
