化学和生物制剂处理对洋葱种子萌发的影响

研究了洋葱种子"Wolska"在PEG8000和水引发条件下的萌发情况,以及杀菌剂(Penncozeb硫锌制剂和Apron爱普荣)和生物制剂(Biozym生物合剂,Promot助长剂)对洋葱种子萌发的影响。结果表明,10℃PEG引发处理中,所有的达到最大萌发率的时间和平均萌发时间较对照极显著减小,在该温度下,水引发处理效果比PEG引发好;20℃时,水引发处理达到最大萌发率的时间和平均萌发时间与对照及PEG处理间没有显著差异。杀菌剂处理在10℃时延缓了萌发速度,而在20℃时所有处理达到最大萌发率的时间和平均萌发时间与对照无显著差异。生物制剂处理在10℃和20℃下对萌发速度均没有改善;与对照相比,10℃的PEG引发与水引发处理极大地改善了萌发力;20℃时的生物制剂处理、PEG引发和水引发处理与对照相比,均未显著改善萌发力。

Effects of chemical and biological treatments on germination of onion (Allium cepa L.) seeds

The effects of osmopriming (OP) in PEG 8000 and hydropriming (HP) on onion "Wolska" seed germination were studied.Moreover,fungicides (Penncozeb and Apron) and biological (Biozym,Promot) treatments on seed germination were investigated.After osmopriming at 10℃ all the T values and MGT were reduced significantly compared with control.Hydropiming at 10℃ gave the better results than osmopriming.On the other hand,T values and MGT after hydropriming at 20 ℃ did not differ significantly from those in control an OP.Fungicide treatment at 10 ℃ delayed speed of germination.All the T values and MGT in fungicide treatment at 20 ℃ did not differ significantly from control.Biological treatments did not affect their speed of germination both at 10 ℃ and 20 ℃.OP and HP at 10 ℃ significantly improved germination capacity (GC) compared with control.Biozym and Promot treatments,osmopriming and hydropriming at 20 ℃ did not affect significantly germination capacity (GC) compared with control.