摘要
以茭白的单季茭品种蒋墅茭和双季茭品种葑红早为试材,利用不同浓度的除草剂2-甲-4-氯钠(MCPA-Na)进行处理,并测定茭白根系的活力、叶片的细胞膜透性,叶绿素、丙二醛、脯氨酸含量,过氧化物酶(POD)和多酚氧化酶(PPO)的活性,以探讨2-甲-4-氯钠对茭白生理特性的影响。结果表明:低浓度的2-甲-4-氯钠处理能促进两茭白品种根系活力、叶绿素含量的增加,随2-甲-4-氯钠处理浓度的进一步增加而下降;细胞膜透性、丙二醛和脯氨酸的含量、POD和PPO的活性则随2-甲-4-氯钠处理浓度的增加而增加;两茭白品种受2-甲-4-氯钠伤害的程度随处理时间的增加而增加,品种间存在差异。
The Changes of physiological and biochemical indexes in leaves and roots of Zizania caduciflora(Turcz.)Hand.-Mazz.were studied every 5 days on single-harvested cultivar'Jiangshujiao'and double-harvested cultivar'Fenghongzao',which were treated with different concentration of MCPA-Na.The effect of MCPA-Na on physiological characteristics of Zizania caduciflora(Turcz.)Hand.-Mazz.as discussed.The results indicated that the root activity and chlorophyll content of the 2 varieties were increased when treated with low concentration of MCPA-Na.While they were decreased when increasing the concentration of MCPA-Na.However,the membrane permeability,MDA and praline contents,POD and PPO activities of Zizania caduciflora(Turcz.)Hand.-Mazz.were increased when increasing MCPA-Na concentration.Injury of MCPA-Na stress to the 2 Zizania caduciflora(Turcz.)Hand.-Mazz.varieties were increased along with the increasing of treating times.There were differences between cultivars.
出处
《中国蔬菜》
北大核心
2011年第12期52-55,共4页
China Vegetables
基金
国土资源部与江苏省政府合作项目〔(2003)019-01〕
江苏省农业三项工程项目〔sx(2005)089〕
关键词
茭白
2-甲-4-氯钠
生理特性
Zizania caduciflora(Turcz.)Hand.-Mazz.
MCPA-Na
Physiological characteristics
