Studies on the effects of treatment with exogenous GA_3、ABA on seed germinating and preharvest sprouting in parents hybrid rice

The treatment with exogenous GA3,ABA on seed and parents hybride rice,the results showed the difference on the same exogenous plant growth substances treatment.The content of 110 mg/L,GA3 can promote seed germinating significantly,and ABA restrained them significantly,however,preharvest sprouting formation was promoted dramatically on V20B parent rice which need the content of 80 mg/L GA3 and Jin 23B which need the content of 110 mg/L,then it was inhibited remarkably on V20B which need the higher content and Jin23B which need the content of 70 mg/L.It was more complex on mechanism of preharvest sprouting in parent hybrid rice than seed germinating.