【摘要】 以‘东农311’和‘克新13号’为试验材料,采用盆栽控水的方式,在抗旱棚内研究马铃薯叶片叶绿素荧光参数受干旱和复水的影响。结果表明:干旱下,叶绿素荧光参数Fv/Fm、Fv/Fo、Y(Ⅱ)和qP持续下降,Y(NPQ)、NPQ表现为不断增加;在处理的第15 d和第23 d,‘克新13号’的叶绿素荧光指标变化幅度大于‘东农311’,在复水后‘东农311’的恢复程度大于‘克新13号’。‘东农311’的叶绿素荧光参数比‘克新13号’更适应干旱胁迫。更多还原

【Abstract】 Two potato cultivars ’Dongnong 311’ and ’Kexin 13’ were used to study the relationship of drought tolerance and chlorophyll fluorescence parameters during water stress and rewatering of potato plants in a rain-proof shed.Chlorophyll fluorescence parameters Fv/Fm,Fv/Fo,Y(Ⅱ) and qP decreased continuously; while Y(NPQ) and NPQ continuously increased under drought conditions.’Kexin 13’ changed in chlorophyll fluorescence parameters greater than ’Dongnong 311’ after 15 days and 23 days of drought.The degree of recovery of ’Dongnong 311’ was better than ’Kexin 13’ after rewatering.’Dongnong 311’has a stronger adaptability to drought environment than ’Kexin 13’ does.更多还原