YIN Juan,LI Ning.Effect of Heavy Metal Stress on Germination，Growth and Photosynthetic Characteristics of Poa pratensis L.[J].Northern Horticulture,2016,40(18):61-64.[doi:10.11937/bfyy.201618017]
重金属胁迫对草地早熟禾萌发、生长及光合特性的影响
- Title:
- Effect of Heavy Metal Stress on Germination，Growth and Photosynthetic Characteristics of Poa pratensis L.
- 文献标志码:
- A
- 摘要:
- 以草地早熟禾为研究材料，研究了不同浓度的重金属离子镉（Cd2+）、铜（Cu2+）和铅（Pb2+）对其种子萌发、幼苗生长及光合特性的影响。结果表明：低浓度的Cd2+（10 mg?kg-1）和Cu2+（100 mg?kg-1）处理时，对草地早熟禾种子萌发有一定的促进作用，发芽率分别达到了962%和942%，发芽指数分别为98和97，均高于对照；当Cd2+浓度高于10 mg?kg-1、Cu2+浓度高于100 mg?kg-1时，种子发芽率和发芽指数均低于对照。当Cu2+浓度低于200 mg?kg-1时，随着浓度的增大，幼苗的株高、总根长和地上生物量以及叶绿素含量和Fv/Fm值有一定的增加；当Cu2+浓度高于200 mg?kg-1时，随着浓度的增大，则呈下降趋势。而随着Pb2+浓度的增加，草地早熟禾种子的萌发、幼苗的生长及光合效率均逐渐下降，且低于对照。
- Abstract:
- In the experiment，Poa pratensis L.was selected as the research material，the effect of three different heavy metals ions cadmium(Cd2+)，copper(Cu2+)，lead(Pb2+) and different concentration on seed germination，seedling growth and photosynthetic characteristic systematically were studied.The results showed that in the low concentration of Cd2+ (10 mg?kg-1) and Cu2+ (100 mg?kg-1) treatments,seed germination of Poa pratensis L.had been promoted in some extent and the seed germination rates reached 962% and 942% respectively，the germination index were 98 and 97 respectively，which were higher than the controls.When the concentration of Cd2+ was higher than 10 mg?kg-1 or Cu2+ concentration was higher than 100 mg?kg-1，the seed germination percentage and germination index were lower than the controls.When Cu2+ concentration was below 200 mg?kg-1，the seedlings height，total root length，biomass of aboveground and the content of chlorophyll，Fv/Fm values had a slight increase along with the increase of concentration.When Cu2+ concentration was higher than 200 mg?kg-1，significant decline appeared with the increase of concentration.In addition，seed germination，seedling growth and photosynthetic efficiency of Poa pratensis L.declined with the increase of concentration of Pb2+，and were lower than the controls.
参考文献/References:
[1]陈俊任,柳丹,吴家森,等.重金属胁迫对毛竹种子萌发及其富集效应的影响[J].生态学报,2014(22):6501-6509. [2]田禹璐,朱宏.重金属镉对植物胁迫的研究进展[J].哈尔滨师范大学自然科学学报,2015(2):149-153. [3]梁剑.重金属镉胁迫对油橄榄幼苗生长的影响[J].江苏农业科学,2015(11):110-112. [4]李西,吴亚娇,孙凌霞.铅胁迫对三种暖季型草坪草生长和生理特性的影响[J].草业学报,2014(4):171-180. [5]杨玲,张勇,吴洪娇,等.铅锌胁迫对早熟禾和狗牙根种子出苗和幼苗生长的影响[J].云南农业大学学报(自然科学版),2013,28(3):405-410. [6]王松华,张华,何庆元.铜胁迫对紫花苜蓿幼苗叶片抗氧化系统的影响[J].应用生态学报,2011(9):2285-2290. [7]尹莹莹.干旱胁迫下草地早熟禾叶片的生长模型[J].贵州农业科学,2015(12):45-47. [8]梁芳,郭晋平.植物重金属毒害作用机理研究进展[J].山西农业科学,2007(11):34-36. [9]马敏,龚惠红,邓泓.重金属对8种园林植物种子萌发及幼苗生长的影响[J].中国农学通报,2012,28(22):206-211. [10]陈伟.重金属胁迫对草坪草生长发育及生理特性的影响[D].兰州:甘肃农业大学,2014. [11]沈高峰.重金属Pb胁迫对草坪草生长·抗氧化生理特性的影响[J].安徽农业科学,2011，39(24):14757-14760. [12]多立安,高玉葆,赵树兰.早熟禾对4种重金属胁迫生长响应特征[J].西北植物学报,2006,26(1):183-187. [13]刘大林,杨俊俏,刘兆明,等.镉、铅胁迫对草地早熟禾幼苗生理的影响[J].草业科学,2015,32(2):224-230.
相似文献/References:
[1]王 强.重金属对苔藓植物影响的研究进展[J].北方园艺,2014,38(10):169.
WANG Qiang.Advance in the Effects of Heavy Metals on Bryophytes[J].Northern Horticulture,2014,38(18):169.
[2]陈晓云,张亚文,詹德江,等.辽宁海城设施蔬菜土壤重金属污染评价研究[J].北方园艺,2014,38(01):165.
CHEN Xiao-yun,ZHANG Ya-wen,ZHAN De-jiang,et al.Study on Evaluation of Soil Heavy Metal Pollution of Greenhouse Vegetable in North China[J].Northern Horticulture,2014,38(18):165.
[3]贺小琴,张永清.离石区蔬菜大棚土壤重金属污染现状评价[J].北方园艺,2014,38(04):155.
HE Xiao-qin,ZHANG Yong-qing.Assessment of Heavy Metal Pollution in Vegetable Greenhouse in Lishi District[J].Northern Horticulture,2014,38(18):155.
[4]李寿田,钱剑林,韩建国,等.修剪条件下水分胁迫和磷处理对草地早熟禾草坪质量的影响[J].北方园艺,2013,37(18):56.
LI Shou-tian,QIAN Jian-lin,HAN Jian-guo,et al.Effects of Water Stress and Phosphorus Treatment on Turf Quality of Poa pratensis L.Under Mowing Conditions[J].Northern Horticulture,2013,37(18):56.
[5]吴大付,朱东海,吴海卿,等.重金属污染土壤的植物修复对“环保育种”的呼唤[J].北方园艺,2013,37(10):190.
WU Da-fu,ZHU Dong-hai,WU Hai-qing,et al.Requirement of ‘Environmental Breeding’ for Phytoremediation of Heavy Metal Contaminated Soils[J].Northern Horticulture,2013,37(18):190.
[6]梁巧玲,杨晖,赵鹂.丽水市郊蔬菜重金属含量及健康风险分析[J].北方园艺,2013,37(12):21.
LIANG Qiao-ling,YANG Hui,ZHAO Li.Analysis of Heavy Metal Contents in Vegetables of Lishui Suburb and the Health Hazard[J].Northern Horticulture,2013,37(18):21.
[7]张满满,肖 昕,谭 敏.徐州北郊土壤重金属污染评价研究[J].北方园艺,2013,37(06):177.
ZHANG Man-man,XIAO Xin,TAN Min.Study on the Soil Heavy Metals Pollution Evaluation in the Northern Suburb of Xuzhou City[J].Northern Horticulture,2013,37(18):177.
[8]关梦茜,董然.重金属污染土壤的花卉植物修复研究进展[J].北方园艺,2013,37(21):187.
GUAN Meng-xi,DONG Ran.Research Progress on the Flowers Remediation in Heavy Metal Pollution Soil[J].Northern Horticulture,2013,37(18):187.
[9]孙西岭,孙峰,周春玲,等.三种粉尘条件下草地早熟禾的滞尘效益及光合作用影响[J].北方园艺,2012,36(15):74.
SUN Xi-ling,SUN Feng,ZHOU Chun-ling,et al.Dust-detaining Capability and the Effect of Photosynthesis of Poa pratensis to Three Dusts[J].Northern Horticulture,2012,36(18):74.
[10]马文哲,王文光,吴春霞,等.杨凌示范区蔬菜中重金属污染分析与评价[J].北方园艺,2012,36(17):46.
MA Wen-zhe,WANG Wen-guang,WU Chun-xia,et al.Analysis and Evaluation on Heavy Metal Pollution of Vegetables in Yangling Demonstration Zone[J].Northern Horticulture,2012,36(18):46.
备注/Memo
第一作者简介：尹娟（1979-），女，硕士，讲师，现主要从事园林植物栽培选择与应用等研究工作。E-mail:yijuan9999@163com.基金项目：国家自然科学基金资助项目（31270664）。