sul型甜玉米种子乳熟后百粒重和活力变化的研究

Study on 100 kernel weight and seed vigor of sul type sweet corn seeds after milky rite

试验以 3个早熟 sul型甜玉米自交系为材料分析了乳熟后甜玉米种子百粒重、发芽率和活力的变化。结果表明 ,从抽丝后 30 d起发芽率已较高。百粒重和活力指数随成熟度增加逐渐增大 ,5 0 d百粒重最大 ,达到种子形态成熟 ;4 5 d活力指数最大 ,达到种子生理成熟。最佳采种期应以抽丝后 5 0

kernel weight and seed vigor after milky ripening in three inbred lines of sul type sweet corn were analyzed.The germinating rate of seed was relatively high at 30 days after silking.100 kernel weight and vigor index were increased in the ripening and the maximum values of the two were realized at 50 days and 45 days after silking respectively.The best time of harvest should be at 50 days after silking.