不同外源激素对黄秋葵种子萌发的影响

为了研究不同外源激素对黄秋葵种子萌发的影响,本试验采用不同浓度的GA3和NAA两种外源激素对两个黄秋葵品种(美人指和凌云二号)的种子进行了处理。结果表明：(1) 采用不同浓度的GA3处理两个黄秋葵品种种子,100mg/L的GA3浸泡处理美人指种子后,显著提高了种子发芽率、发芽势和发芽指数,分别提高了12.67%、12.67%、2.62%。对凌云二号种子,浓度为250 mg/L时,3项指标分别达到最大。(2) 采用不同浓度的NAA处理两个黄秋葵品种种子,发芽率、发芽势和发芽指数均呈逐渐降低的趋势；NAA浓度(5-25mg/L)均抑制了美人指种子的萌发；用5 mg/L的NAA处理凌云二号种子,3项指标分别达到最大。综合分析认为,GA3和NAA对两个品种的黄秋葵种子的萌发均具有不同程度的促进作用。

Effects of Different Exogenous Hormone Treatments on Okra Seed Germination

To clarify the effects of different exogenous hormones on the germination of okra seeds, we studied the effects of three exogenous hormones on seed germination of two okra cultivars by soaking the seeds with different concentrations of GA3 and NAA. The results showed that: (1) soaking the seeds of the two cultivars in 100 mg/L GA3, the seed germination rate, germination potential and germination index were significantly increased by 12.67%, 12.67% and 2.62%, respectively, compared with those of the control group, for‘Lingyun No.2’, when the concentration was 250 mg/L, the three indexes reached the maximum; (2) soaking the seeds of the two cultivars in different concentrations of NAA, the germination rate, germination potential and germination index were gradually decreasing, 5-25 mg/L NAA inhibited the seed germination of‘Manicure Finger’, soaking the seeds of‘Lingyun No.2’in 5 mg/L NAA, the three indexes reached the maximum. Comprehensive analysis showed that GA3 and NAA could both promote the germination of okra seeds.