【摘要】 以‘金鹏10号’番茄幼苗为试材,研究了外源没食子酸丙酯(PG)对低温逆境下番茄幼苗生理特性的影响。结果表明:外源PG诱导能明显提高番茄幼苗的抗冷性;与低温对照相比,经PG诱导的番茄幼苗叶片的相对电导率和丙二醛(MDA)含量显著降低,过氧化物酶(POD)和超氧化物歧化酶(SOD)活性、叶绿素、脯氨酸和可溶性糖含量显著提高。其中,PG浓度为2.0mmol/L的处理表现最佳。更多还原

【Abstract】 The effect of exogenous PG on anti-oxidant enzyme and osmotic adjustment of ‘Jinpeng No.10’tomato seedlings were investigated under low temperature stress.The results showed that PG could enhance resistance of chilling injury to tomato seedlings under low temperature treatment.Exposed to low temperature,exogenous PG treatment significantly promoted the activities of SOD and POD,chlorophyll content,soluble proline content and soluble sugar content were also enhanced to varying degrees.While relative electric conductivity and MDA content were significantly reduced by PG.The concentration of PG at 2.0mmol/L showed the most effective result.更多还原