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环境因子对苦豆子种子萌发和幼苗生长的影响
Influence of Environmental Factors on the Seed Germination and Seedling Growth of Sophora alopecuroides
【摘要】 研究光照、温度、水分和土壤盐分等因子对苦豆子(Sophora alopecuroides L.)种子萌发的影响。结果表明:在持续光照、持续黑暗和16 h光照/8 h黑暗下种子萌发最适宜的温度为25℃;在16~8 h光暗交替下,25℃/16℃昼夜变温发芽率最高;种子萌发对光照不敏感;种子萌发最适土壤含水量为8%~13%;种子发芽期对NaCl的耐受浓度为1.2%。
【Abstract】 The effects of illumination,temperature,soil water and salt contents on the seed germination and seeding growth of Sophora alopecuroides L.was studied.The results show that the optimal tem-perature for seed germination was 25℃ under sustained illumination,sustained dark,or 16 h illumination/8 h dark.;the highest germination rate was occurred for the treatments of 25℃(daytime)/16℃(night) under 16 h illumination/8 h dark.The seed germination and seeding growth were not sensitive to the illumination.The optimal soil water content was 8~13% and the highest NaCl tolerance concentration was 1.2%for seed germination.
【Key words】 Sophora alopecuroides L; Temperature; Illumination; Soil water content; Hybrid salt; Seed germination;
- 【文献出处】 草地学报 ,Acta Agrestia Sinica , 编辑部邮箱 ,2007年03期
- 【分类号】S541.9;S567.239
- 【被引频次】29
- 【下载频次】581