不同浓度褪黑素对甜菜种子的引发影响

研究不同浓度的褪黑素对同一类型甜菜种子的引发作用,为甜菜种子包衣材料的筛选奠定了理论基础。本研究以STm1619甜菜种子为试验材料,设置了3种浓度和3个时间梯度的9个处理,通过对甜菜种子浸泡回干发芽培养,测定它们的发芽势、发芽率、发芽指数以及活力指数。结果显示,50 μmol/L浓度处理的STm1619甜菜种子在8、12、24 h的发芽势、发芽率、发芽指数以及活力指数均明显高于对照种子;100 μmol/L浓度处理的STm1619甜菜种子在不同时间的发芽势、发芽率、发芽指数和活力指数高于对照组;200 μmol/L浓度处理的STm1619甜菜种子在8、12、24 h的发芽势、发芽率、发芽指数和活力指数也都较高于对照组。不同浓度褪黑素对STm1619甜菜种子的萌发随着时间不同,效果也各不相同。处理时间过长或过短都会对引发效果产生一定的影响。

Initiation Effects of Different Concentrations of Melatonin on Sugar Beet Seeds

The study aims to explore the initiation effect of different concentrations of melatonin on the same type of beet seeds, and lay a theoretical foundation for the screening of beet seed coating materials. In this study, STm1619 beet seeds were used as experimental materials, and 9 treatments with 3 concentrations and 3 time gradients were set up. By soaking beet seeds back to dry germination culture, the germination potential, germination rate, germination index and vigor index were measured. The results showed that the germination potential, germination rate, germination index and vigor index of STm1619 beet seeds treated with 50 μmol/L for 8, 12 and 24 h were significantly higher than those of the control. The germination potential, germination rate, germination index and vigor index of STm1619 beet seeds treated with 100 μmol/L for different time were higher than those of the control. The germination potential, germination rate, germination index and vigor index of beet seeds treated with 200 μmol/L for 8, 12 and 24 h were also higher than those of the control. The effects of different concentrations of melatonin on seed germination of STm1619 sugar beet varied with time. Too long or too short processing time will have a certain impact on the initiation effect.