| 四种外源物质对干旱胁迫下火龙果种子萌发及幼苗生长的影响 |
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| 引用本文： | 宋常美,王继玥,赵青青,余磊. 四种外源物质对干旱胁迫下火龙果种子萌发及幼苗生长的影响[J]. 北方园艺, 2019, 0(15): 44-49 |
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| 作者姓名： | 宋常美 王继玥 赵青青 余磊 |
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| 作者单位： | 贵阳学院生物与环境工程学院,贵州贵阳,550003;贵阳学院实验中心,贵州贵阳,550003 |
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| 基金项目： | 贵阳市科技局贵阳学院专项资金资助项目(GYU-KYZ[2019—2020]SH-12);贵州省教育厅大学生创新创业训练计划资助项目(201710976052);贵州省生态环境中优势农产品残留农药降解关键技术研究重点实验室资助项目(黔教合KY字[2018]005) |
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| 摘 要： | 以"新红龙"火龙果(Hylocereus undatus)种子为试材,通过模拟干旱胁迫方法探索不同浓度GB、SNP、ALA和Spd对12%PEG-6000干旱胁迫种子萌发和幼苗生长的影响。结果表明:0.5 mmol·L-1 GB、0.05 mmol·L-1Spd、8 mg·L-1 ALA和0.05 mmol·L-1 SNP能有效缓解种子的干旱胁迫,相应的发芽率、发芽势和发芽指数分别为100.00%,96.00%和74.81、99.00%,75.33%和65.91、100.00%,90.00%和75.89、97.33%,85.33%和85.33。同时,4种外源物质均利于火龙果胚根和胚轴的生长,但对叶片的影响较小。
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| 关 键 词： | 火龙果 干旱胁迫 外源物质 种子 幼苗 |
Effect of Four Kinds of Exogenous Substances on Seed Germination and Seedling Growth of Hylocereus undatus Under Drought Stress |
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| SONG Changmei,WANG Jiyue,ZHAO Qingqing,YU Lei. Effect of Four Kinds of Exogenous Substances on Seed Germination and Seedling Growth of Hylocereus undatus Under Drought Stress[J]. Northern Horticulture, 2019, 0(15): 44-49 |
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| Authors: | SONG Changmei WANG Jiyue ZHAO Qingqing YU Lei |
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| Affiliation: | (Biological and Environmental Engineering College, Guiyang University, Guiyang, Guizhou 550003;Experimental Center,Guiyang University,Guiyang,Guizhou 550003) |
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| Abstract: | Seeds of Hylocereus undatus were used as materials to explore the effect of different concentrations of GB,SNP,ALA and Spd on seeds germination and seedling growth by using 12% PEG-6000 to simulate the drought stress conditions.The results showed that 0.5 mmol·L-1 GB,0.05 mmol·L-1 Spd,8 mg·L-1 ALA and 0.05 mmol·L-1 SNP were effective at reducing the drought stress on seeds.The germination rate,germination potential and germination index of GB were100.00%,96.00% and 74.81,Spd were 99.00%,75.33% and 65.91,ALA were 100.00%,90.00%and 75.89,SNP were 97.33%,85.33% and 85.33.At the same time,four kinds of exogenous substances were beneficial to the growth of radicle and hypocotyl,but had less influence on leaves. |
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| Keywords: | Hylocereus undatus drought stress exogenous substances seed seedling |
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