Seed Quality Grading for Amorpha fruticosa Linn

Based on the 《International Seed Test Agreement》(ISTA)1985 and 《Method of Tree Seed Test》 GB 2772-81,the new standard of seed buding rate (seedling rate) and the old standard of seed buding rate(radical sprouting rate) of 37 seed samples of Amorpha fruticosa Linn, from different production areas were tested.Methods of ± standard deviation, sample calculated frequency,and linear regression were used to combine with the production management practice.Divide the seedling rate into three grades: Ⅰ (70%), Ⅱ ( 60%), Ⅲ (47%), substandard ( 47%).At the same time the radical sprouting rate was compared with the seedling rate in this research.