摘要
试验以紫果云杉种子为材料,采用纸床发芽法探究不同浓度KNO_(3)和NaOH对其萌发率的影响.结果表明:低浓度化学处理对种子萌发具有促进作用,高浓度则表现为抑制效应.其中,浓度为0.6%的KNO_(3)处理效果最佳,萌发率达66.67%,较对照组显著提高8.67%;浓度为1.0%的KNO_(3)处理萌发率仅为45.40%,较对照组降低12.6%.NaOH处理中,0.4%浓度促进效果最显著(较对照组提升21%),0.5%浓度显著抑制萌发(较对照组降低12%).研究证实,化学物质浓度是调控紫果云杉种子萌发的关键因素,适宜浓度可有效提升萌发率,过高浓度则产生负面影响,为紫果云杉种子预处理提供了浓度参考依据.
This study investigated the effects of potassium nitrate(KNO_(3))and sodium hydroxide(NaOH)at varying concentrations on the germination rate of Picea purpurea Mast seeds using the paper towel germination method.Results demonstrated a concentration-dependent effect:low concentrations of both chemicals significantly enhanced seed germination,whereas high concentrations exhibited inhibitory effects.Optimal treatment conditions were identified as 0.6%KNO_(3),yielding a germination rate of 66.67%(8.67%higher than the control)and 0.4%NaOH,which improved germination by 21%.Conversely,1.0%KNO_(3) treatment resulted in markedly reduced germination(45.40%,12.6%below control),while 0.5%NaOH significantly inhibited germination(12%reduction compared to control).These findings establish concentration thresholds for chemical priming,demonstrating that appropriately selected concentrations(notably 0.6%KNO_(3) and 0.4%NaOH)can effectively enhance P.purpurea Mast seed germination,whereas excessive concentrations produce detrimental effects.This provides critical guidance for optimizing seed pretreatment protocols in P.purpurea Mast cultivation.
作者
马正才
马怀义
马伟
周学义
MA Zhengcai;MA Huaiyi;MA Wei;ZHOU Xueyi(School of Chemistry and Life Sciences,Gansu Minzu Normal University,Hezuo Gansu 747000;Forestry Technology Comprehensive Service Center of Gannan Prefecture,Hezuo Gansu 747000)
出处
《甘肃高师学报》
2026年第1期1-5,共5页
Journal of Gansu Normal Colleges
基金
甘肃省教育厅2021年高等学校创新能力提升项目“甘南州野生种质资源优良花卉甘肃瑞香的筛选及其繁育技术研究”(2021A-152)
2024年甘南州科技计划项目技术创新引导计划项目“甘南高原珍稀濒危野生药用植物迁地保护中心建设”(2024JY1NC003)。
