外源乙烯对马铃薯发芽的抑制作用

Inhibition effect of exogenous ethylene on potato sprouting

目的:研究外源乙烯在室温条件下对马铃薯发芽的抑制作用。方法:使用固体乙烯释放剂处理马铃薯,观察外源乙烯对马铃薯发芽时间和发芽指数的影响。结果:实验结果表明,乙烯有效推迟了马铃薯的起始发芽时间8～10d,而且乙烯浓度越高,效果越好;重复使用的效果更佳,可以降低发芽指数15%左右;浸蘸具有增效作用,降低发芽指数8%左右。结论:外源乙烯可对马铃薯的发芽起到一定的调控作用,但发芽进程无法完全抑制。

Object：To study the inhibition of exogenous ethylene in potato sprouting.Methods：Potatoes were treated by solid ethylene releasing agents and effect of exogenous ethylene on the initial time of potato sprouting and sprouting index was observed.Results：Exogenous ethylene was effective in delaying sprouting time for about 8～10d.The higher the concentration of ethylene,the better the inhibition effect was.Potatoes treated repeatedly showed better effect than once treated,which sprouting index was declined by 15%.Moreover,treatment of solid ethylene releasing agents dipped in water was more effective,which sprouting index was declined by almost 8%.Conclusion：Treatment of exogenous ethylene influenced the potato sprouting process,however,sprouting couldn＇t be suppressed completely.