碳化玉米芯缓解邻苯二甲酸对番茄幼苗生长和酶活性的抑制作用  

Studies on Alleviation Effect of Carbonized Maize Cob to Phthalic Acid on Restraining Growth and Enzyme Activity of Tomato Seedlings

作　　者：李亮亮[1] 李天来[1] 张恩平[1] 陈彬[1] 刘文娥[1] 吴正超[1] 

机构地区：[1]沈阳农业大学,辽宁沈阳110161

出　　处：《中国蔬菜》2011年第16期50-55,共6页China Vegetables

基　　金：国家"十一五"科技支撑项目(2006BAD07B04);辽宁省"十一五"重大科技攻关项目(2006215001)

摘　　要：以邻苯二甲酸作为番茄的连作障碍自毒物质,珍珠岩为基质进行盆栽试验,并就生物量、光合作用和保护酶活性等指标的变化研究不同浓度邻苯二甲酸对番茄幼苗生长抑制作用以及加入碳化玉米芯缓解邻苯二甲酸对番茄幼苗生长抑制作用的效果。结果表明:施用邻苯二甲酸对幼苗的光合作用指标、生物量及叶绿素b的含量具有显著的抑制作用。保护酶活性在处理初期提高,随着处理时间的延长,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性先上升后下降,同时使幼苗体内MDA含量显著增加。加入碳化玉米芯显著提高了幼苗的生物量、光合作用指标及叶绿素b的含量,有效缓解了对保护酶活性的抑制作用,降低了保护酶活性变化的幅度及幼苗体内MDA含量。We examined the effects of phthalic acid on the growth of tomato(Lycopersicon esculentum Mill.)seedlings,and its alleviation of applied carbonized maize cob was shown.The tomato seedlings were transplanted in the hydroponic system with perlite as substrate,and the biomass,photosynthesis and antioxidant enzymes activity were investigated.The results showed that phthalic acid could inhibit the biomass,photosynthesis and chlorophyll b contents of tomato seedlings.With the extension of treatment time,the activities of SOD,POD and CAT were increased at the initial stage,then decreased and the MDA content was increased by the treatment of phthalic acid.But the inhabitations were alleviated by applied carbonized maize cob.The biomass,photosynthesis index and chlorophyll b content were increased.The fluctuations of antioxidant enzymes were slight and MDA content was decreased.

关 键 词：邻苯二甲酸 番茄 自毒作用 光合作用 保护酶 丙二醛 碳化玉米芯 

分 类 号：S641.2[农业科学—蔬菜学]