摘要
为了探究纳米陶瓷材料对高羊茅种子萌发和幼苗生长的影响,在生活垃圾堆肥基质中添加不同质量分数(0、0.5%、1.0%、1.5%、2.0%、2.5%、3.0%)的纳米陶瓷进行高羊茅培植,测定高羊茅的种子萌发、生物量、叶绿素含量、丙二醛(MDA)含量、超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)以及核酮糖-1,5-二磷酸羧化酶(RuBisCO)的活性.结果表明:纳米陶瓷添加量为0.5%时,高羊茅的种子萌发和幼苗生物量略有增加,幼苗叶绿素和MDA含量轻微下降,SOD、POD和CAT活性显著降低,RuBisCO活性保持不变;随着添加量的增加,高羊茅的种子萌发和幼苗生物量显著下降,幼苗叶绿素和MDA含量增加,SOD、POD和CAT活性先增加后下降,RuBisCO的活性呈下降趋势.总的来看,堆肥基质中适量添加(质量分数为0.5%)纳米陶瓷会促进高羊茅的种子萌发和幼苗生长,过量添加(质量分数大于0.5%)则对高羊茅的生长构成了逆境胁迫.
In order to explore the effect of nano-ceramics on the seed germination and the seedlings growth of Festuca arundinacea,the seeds of F.arundinacea were cultivated with municipal solid waste compost mixed with nano-ceramics,the mass ratios of which were 0,0.5%,1.0%,1.5%,2.0%,2.5%and 3.0%respectively.The seed germination,biomass,chlorophyll content,malondialdehyde(MDA)content and superoxide dismutase(SOD),peroxidase(POD),catalase(CAT)and ribulose-1,5-bisphosphate carboxylase(RuBisCO)activity were measured.The results showed that when the mass ratio of nano-ceramics was 0.5%,the seed germination and seedlings biomass increased slightly,the chlorophyll content and MDA content decreased slightly,the activity of SOD,POD and CAT decreased significantly,and the activity of RuBisCO did not change.With the increase of nano-ceramics addition,the seed germination and the seedlings biomass decreased significantly,the chlorophyll content and MDA content increased,the activities of SOD,POD and CAT increased firstly and then decreased,and the activity of RuBisCO decreased.Overall,moderate addition of nano-ceramics(0.5%)in municipal solid waste compost can improve the seed germination and the seedlings growth of F.arundinacea,while over addition of nano-ceramics(>0.5%)constitutes a stress on the growth of F.arundinacea.
作者
李婷婷
赵树兰
多立安
LI Tingting;ZHAO Shulan;DUO Li′an(College of Life Sciences,Tianjin Normal University,Tianjin 300387,China)
出处
《天津师范大学学报（自然科学版）》
CAS
北大核心
2020年第1期48-52,共5页
Journal of Tianjin Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(31870484).
关键词
高羊茅
纳米陶瓷
垃圾堆肥
种子萌发
幼苗
抗氧化酶
Festuca arundinacea
nano-ceramics
municipal solid waste compost
seed germination
seedling
antioxidant enzymes
