【摘要】 以法国百里香(Thymus vulgaris)为材料,研究了PEG模拟干旱胁迫和低温对种子萌发和幼苗生长的影响,旨在探索进口百里香种子播种育苗的适宜条件。结果表明,温度、干旱及其互作对法国百里香种子萌发和幼苗生长均有显著影响。0~10%PEG-6000水分条件下,8~24℃下法国百里香种子均能良好萌发,其中在10~12℃时发芽率最高,达79.3%,显著高于其余各处理(P<0.05)。当PEG-6000达15%时显著抑制其萌发,至30%PEG-6000时仅在22~24℃下少量萌发。萌发后,当温度为22~24℃,根长、茎长均显著高于其他处理。种子和幼苗生长均表现出对PEG模拟干旱胁迫和低温不同的响应。更多还原

【Abstract】 In order to understand the optimal conditions for germination and seedling growth of import thyme seeds——Thymus vulgaris,the effects of PEG-simulated drought stress and low temperature on seed germination and seedling growth were measured. The analysis of two-way ANOVA showed that temperature,drought and their interaction significantly affected( P < 0. 05) the seed germination and seedling growth. The treatments with the temperature ranged from 8 ℃ to 24 ℃ and PEG-6000 ranged from 0 to 10% were optimal for seeds germination.The treatment with the temperature at 10 ℃ to 12 ℃ had the highest germination rate of 79. 3%,which had significant difference from the other treatments( P < 0. 05). The treatments with 15% PEG-6000 could significantly inhibit( P < 0. 05) seed germination. Under the treatments with 30% PEG-6000,seeds only could germinate at 22℃ to 24 ℃. The root and shoot length under treatments with the temperature at 22 ℃ to 24 ℃ were significantly higher than the other treatments. Seeds and seedling growth had different response to PEG-simulated drought stress and cold.更多还原