【摘要】 [目的]探究干旱环境下山韭种子的萌发情况，了解其对干旱环境的抵抗能力。[方法]采集山韭种子作为研究对象，探究不同PEG-6000浓度模拟干旱胁迫对山韭种子萌发的影响，测定种子的发芽率、发芽势、发芽指数、胚芽长度、胚根长度和活力指数。[结果]随着PEG-6000浓度升高，山韭种子初始萌发到达到50%的时间增长；发芽率PEG浓度10%与对照无显著差异；随着PEG浓度升高，种子发芽势、发芽指数降低，但轻度干旱PEG浓度10%与对照相比无显著差异，PEG浓度15%、20%则抑制种子萌发，浓度20%种子萌发停滞；胚根长度随着干旱胁迫增加表现为低促高抑，在PEG-6000浓度10%时达到最长。[结论]野山韭种子对PEG 10%浓度干旱胁迫具有一定抗性，但高浓度下野山韭种子萌发会停滞。更多还原

【Abstract】 [Objective]To investigate the germination of Allium senescens L. seeds under the drought environment and to understand its resistance to the drought environment. [Method]Allium senescens L. seeds were collected as the research object, and the effects of simulated drought stress with different concentrations of PEG-6000 on the germination of Allium senescens L. seeds were investigated to determine the germination rate of the seeds, germination potential, germination index, embryo radicle length and vigor index. [Result] As the concentration of PEG-6000 increased, the time for Allium senescens L. seeds to initially germinate to reach 50% increased; the germination rate of 10% was not different from that of the control; as the concentration of PEG increased, it decreased the seed germination potential and germination index, but there was no significant difference between mild drought of PEG 10% and the control, and the seed germination was inhibited by PEG 15% and 20%, the concentration reached 20% and the seed germination was inhibited. Concentration reached 20% seed germination stagnation; the embryonic root length with drought stress increase showed low promotion and high inhibition, in the PEG-6000 concentration of 10% to reach the longest. [Conclusion] Allium senescens L. seeds were resistant to drought stress at 10% PEG concentration, but seed germination of Allium senescens L. seeds stagnated at high concentration.更多还原