温度和硬实对金花菜种子萌发的影响  

Effects of Temperature and Hardseededness on Seed Germination of Medicago polymorpha

作　　者：任海龙 魏臻武[2] 乔志宏[2] 陈祥[2] 李毅[2] Ren Hailong;Wei Zhenwu;Qiao Zhihong;Chen Xiang;Li Yi(Guangzhou Institute of Agriculture Science,Guangzhou 510308,China;College of animal science and technology,Yangzhou University,Yangzhou 225009,China;Hainan center of Xinjiang Academy of Agricultural Sciences,Sanya 572014,China)

机构地区：[1]广州市农业科学研究院,广东广州510308 [2]扬州大学动物科学与技术学院,江苏扬州225009 [3]新疆农业科学院海南三亚农作物育种试验中心,海南三亚572014

出　　处：《中国野生植物资源》2019年第6期49-52,共4页Chinese Wild Plant Resources

基　　金：海南省自然科学基金项目(319QN264);三亚市科技成果转化项目(2017CZ09);江苏省科技支撑项目(BE2012340)

摘　　要：为科学指导金花菜的田间生产,以不同来源的5份金花菜(Medicago polymorpha L.)种子为试验材料,研究其在不同温度(5、10、15、20、25、30、35、40℃)下和破除种皮后的萌发情况。结果表明:海门、扬中、江都金花菜种子萌发率在20℃左右达到最大值,分别是43%、60%、59%。海安金花菜种子在25℃下萌发率最高,为24%;温岭金花菜种子则在15℃和25℃下萌发率达最高,均为22%。40℃时金花菜种子均无法萌发。金花菜的种皮硬实是限制其萌发的重要因素。不同来源金花菜种子的硬实情况差异较大,海安、海门、扬中、江都、温岭等金花菜种子硬实率分别为84.67%、50.83%、40.50%、37.67%、67.67%。破除种皮硬实可明显提高金花菜种子的萌发率。To scientifically guide the field production of Medicago polymorpha,five resources from different areas were collected as the experimental materials,hardseededness and germination rates at different temperatures(5,10,15,20,25,30,35,40℃)were studied.The results showed that the germination rates of Haimen,Yangzhong and Jiangdu reached the maximum at about 20℃ with 43%,60%and 59%,respectively.24%were the highest germination rate of Haian at 25℃,and the Wenling were the highest at both 15℃ and 25℃ with 22%.At 40℃,the seeds of M.polymorpha could not germinate.The hard coat was an important factor to limit the germination.The hardseededness of Haian,Haimen,Yangzhong,Jiangdu and Wenling were 84.67%,50.83%,40.50%,37.67%and 67.67%,respectively.The germination rate of the seeds of M.polymorpha can be improved obviously by removing the hard coat.

关 键 词：金花菜 种子萌发 温度 硬实率 

分 类 号：Q949.4[生物学—植物学]