| 不同激素前处理对薄荷种子萌发的影响 |
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| 引用本文： | 牛文昊,赵岩.不同激素前处理对薄荷种子萌发的影响[J].安徽农业科学,2012,40(21):10857-10858,10869. |
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| 作者姓名： | 牛文昊 赵岩 |
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| 作者单位： | 赤峰学院生命科学学院,内蒙古赤峰,024000;赤峰学院生命科学学院,内蒙古赤峰,024000 |
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| 摘 要： | 目的]研究不同激素前处理对薄荷种子萌发的影响。方法]研究赤霉素、乙烯利、NAA和2,4-D激素对胡椒薄荷(Mentha arven-sis)种子萌发的影响。结果]当赤霉素浓度在40～160 mg/ml时,薄荷种子的发芽率和发芽势逐渐升高;当赤霉素浓度继续增加时,发芽率和发芽势均明显降低,最适宜的赤霉素浓度为160～200 mg/ml。当浓度在40～100 mg/ml时,乙烯利对光下薄荷种子的萌发均有明显的促进作用,可提高萌发率,而高浓度的乙烯利(100 mg/ml以上)则对萌发有强烈的抑制作用。当NAA浓度为0.08～0.1 mg/ml时,薄荷种子的发芽率和发芽势逐渐升高,表明一定浓度的NAA对光下薄荷种子的萌发有明显的促进作用,可提高萌发率;而NAA浓度继续增加时,发芽率和发芽势均显著降低(P<0.05),表明高浓度(0.5 mg/ml以上)有抑制作用。当2,4-D浓度为10～30 mg/ml时,薄荷种子的发芽率和发芽势逐渐升高,表明一定浓度的2,4-D对光下薄荷种子的萌发有明显的促进作用,可提使萌发率;而随着2,4-D浓度的继续增加,发芽率和发芽势均显著降低(P<0.05),表明高浓度(50 mg/ml)的2,4-D对萌发有抑制作用。结论]赤霉素、乙烯利、NAA和2,4-D激素对胡椒薄荷种子的萌发有不同程度的影响。
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| 关 键 词： | 胡椒薄荷种子 乙烯利 赤霉素 2 4-D NAA |
Effects of Different Hormone Pretreatments on the Germination of Mentha arvensis Seeds |
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| Institution: | NIU Wen-hao et al(College of Life Sciences,Chifeng University,Chifeng,Inner Mongolia 024000) |
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| Abstract: | Objective] To study the effects of different hormone pretreatments on the germination of Mentha arvensis seeds.Method] Effects of different hormones on the germination of M.arvensis seeds were studied,including GA3,ethephon,NAA,and 2,4-D.Method] The germination rate and germination potential of M.arvensis seeds were gradually increased with GA3 concentration increasing from 40 to 160 mg/ml,but from then on,they began to decline apparently.And its optimum concentration was between 160 and 200 mg/ml.Ethephon could effectively promote the germination of M.arvensis seeds and improve the germination rate when being used in concentrations between 40 and 100 mg/ml,but that used in concentrations above 100 mg/ml evidently inhibit germination.When the NAA concentration was increased from 0.08 to 0.1 mg/ml,the germination rate and germination potential were gradually increased,that is to say,NAA in appropriate concentrations could significantly promote the germination of M.arvensis seeds and improve the germination rate.If NAA concentration continued to rise,there would be a significant reduction in germination rate and germination potential(P<0.05),confirming the presence of inhibitory effects for NAA in higher concentration above 0.5 mg/ml.Similarly,2,4-D used in concentrations between 10 and 30 mg/ml could promote the seeds germination and improve the germination rate,while that in higher concentration above 50 mg/ml inhibited germination.The germination rate and germination potential were gradually increased with 2,4-D concentration increasing from 10 to 30 mg/ml,but they began to significantly decline if concentration continued to rise(P<0.05).Conclusion] GA3,ethephon,NAA,and 2,4-D have different effects on the germination of M.arvensis seeds. |
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| Keywords: | M arvensis seeds Ethephon GA3 2 4-D NAA |
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