砂中法测定蒙古黄芪种子的发芽率

摘要

目的:确定蒙古黄芪种子发芽实验的适宜发芽床,为其种子质量标准制定和检验方法确定提供依据.方法:通过子叶伸出种皮及初生叶展开情况,评价纸上法、砂上法、砂中法等3种发芽床的合理性.结果:采用砂中法进行蒙古黄芪发芽实验,其子叶能顺利伸出种皮外,初生叶能正常展开,能正确反映发芽率;能有效了解种子机械处理效果,为蒙古黄芪的播种量提供依据.结论:砂中法是蒙古黄芪种子发芽实验的最佳方法.%Objective:To determine the appropriate germination bed of Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao'seed germination and to provide evidence for its quality control detection method. Methods:The rationality of seeding on the paper, seeding on the sand and seeding in the sand was evaluated by the situation of cotyledon breaking seed coat and primary leaf spreading. Result:With the method of seeding on the sand and seeding in the sand, the cotyledon can break the seed coat successfully and the primary leaves can also spread normally. The germination rate can be reflected correctly, the effects of mechanical treatment on seeds can be known with the method of seeding in the sand. It can provide the basis for sowing rate of Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao. Conclusion:Seeding in the sand is the best method in Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao'seed germination experiment.