摘要
在实验水培条件下,研究了不同浓度1、2二氯苯、1、3二氯苯和1、4二氯苯对小麦种子萌发、幼苗生长和生理特性的影响。结果表明,二氯苯能明显地抑制小麦种子萌发和幼苗的生长,幼苗干重、鲜重均存在不同程度的下降,受害程度随二氯苯浓度的增加而加重,当1、2二氯苯和1、3二氯苯浓度为200 m g/L以上时小麦种子停止发芽。在正常情况下,小麦幼苗体内过氧化物酶活性和丙二醛含量均随浓度的增加呈先增加后下降的趋势。不同浓度二氯苯胁迫使小麦POD、M DA含量增加,小麦受害程度加重。
Effects of different concentrations of dichlorobenzene such as 1, 2-dichlorobenzene and 1, 3- dichlorobenzene and 1,4-dichlorobenzene. on seed germination, seedling growth and biological characters of wheat were studied. The results showed that seed germination and growth of wheat were refrained when the concentration of dichlorobenzene were more than 10 mg/L. The seed germination was stopped by 200 mg/L of 1,2-dichlorobenzene and 1,3-dichlorobenzene. Under 25 mg/L different concentrations of dichlorobenzene- stress, the activity of peroxidase and the concentration malondialdehyde increased with increasing dichlorobenzene concentrations. Damaged-level of wheat seedlings was increased along with the increase of dichlorobenzene concentrations.
出处
《灌溉排水学报》
CSCD
北大核心
2005年第4期11-14,共4页
Journal of Irrigation and Drainage
基金
国家高技术研究发展计划项目(2001AA242121
2002AA2Z4061)
天津市自然科学基金(033604811)
科技部重要技术标准(2002BA906A76)
天津市科技发展计划资助项目(033113611)
关键词
二氯苯
小麦
种子萌发
生理特性
伤害
dichlorobenzene
wheat
seed germination
biological characters
injury
