外源物质浸种对黄瓜陈种子萌发效应的影响

为提高老化种子的生活力和利用率,有效利用黄瓜种子,给黄瓜陈种子在生产中的应用提供数据支撑。以贮存11 a的黄瓜品种甘丰11号种子为材料,采用培养皿发芽法,研究不同外源物质CaCl2、KH2PO4、KNO3、SA、ZnSO4浸种对黄瓜陈种子萌发的影响。结果表明,5种不同浓度的药剂均能不同程度提高黄瓜种子的发芽率,以0.175 mg/L的CaCl2溶液浸种对黄瓜陈种子萌发的促进作用最显著,其发芽率为(91.67±1.66)%、发芽势为(87.90±1.40)%、发芽指数为53.63±2.15,较对照只加入清水处理分别提高31.58%、56.96%、69.37%,各处理间差异达到显著水平(P ＜ 0.05)。生产中可以选用0.175 mg/L的CaCl2溶液浸泡处理黄瓜陈种子。

Effect of Seed Soaking with Exogenous Substances on Germination of Aged Cucumber Seeds

To improve the viability and utilization rate in aged seeds for effective utilization of cucumber seeds and to provide data in the utilization of aged cucumber seeds in production. Aged cucumber seeds of Ganfeng 11 stored for 11 years were used as materials to study the effects of soaking seeds with different exogenous substances, CaCl2, KH2PO4, KNO3, SA and ZnSO4, on the germination of aged cucumber seeds by petri dish germination method. The results showed that five different concentrations of substances could improve the germination rates of cucumber seeds to varied degrees, but 0.175 mg/L CaCl2 solution soaking showed the most significant effect in promoting the germination of cucumber seeds. The germination rate, germination potential and germination index were (91.67±1.66)%, (87.90±1.40)% and (53.63±2.15)%, respectively, which were increased by 31.58%, 56.96% and 69.37% compared with that of water soaking only, respectively, and significant differences among treatments were detected(P < 0.05). In production, 0.175 mg/L CaCl2 solution could be used to soak the aged cucumber seeds.