Germination and vigor of sweet corn seeds with seed soaking time
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摘要: 为促进甜玉米Zea mays var. saccharata 种子萌发,以6个甜玉米品种种子为试验材料,设置不同的浸种时间(0,4,8,16,24 h),进行种子发芽试验,并分析种子相关活力指标的变化。结果表明:浸种8 h能最有效提高6个品种种子的发芽率,加快发芽速度,降低种子浸出液的电导率,种子脱氢酶活力显著提高。建议甜玉米播种前,进行浸种处理8 h,以提高其活力水平和发芽能力。图3表1参13Abstract: To improve seed germination of sweet corn (Zea mays var. saccharata), seeds of six cultivars (Nongtian 2, Nongtian 3, Tiandan 8, Tiandan 10, Jinyutian 1, Jinyutian 2) were soaked for 0, 4, 8, 16, and 24 h. A germination experiment (3 replicates for 100 seeds each chosen randomly and completely randomized design with treatments of 0, 4, 8, 16, and 24 h soaking) was conducted and vigor indices (electric conductivity and dehydrogenase activities) were analyzed (Electic conductivity test and TTC method used, respectively). Results showed that the most effective soaking time was 8 h. After 8 h soaking, germination for the six cultivars accelerated and germination rates were enhanced according to ANOVA analysis (P<0.05). For instance, germination rate of Jinyutian 1 seeds was improved by 109.3% and its mean germination time was shortened by 18.6%. Moreover, in the case of Jinyutian 1, the electric conductivity decreased and dehydrogenase activities improved according to ANOVA analysis (P<0.05). All the aboved results suggested that seed germination and vigor of sweet corn were significantly promoted after 8 h soaking. [Ch, 3 fig. 1 tab. 13 ref.]
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Key words:
- seed physiology /
- sweet corn /
- seed soaking /
- seed germination /
- electric conductivity /
- dehydrogenase activity
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.01.007
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