摘要
以两个耐热性不同的菜豆品种85-CT(耐热)和BBL-47(热敏感)为试材,研究其在不同高温胁迫强度下叶绿素a荧光参数的差异,结果表明:两个品种的叶绿素荧光Fv/Fm及Fv/Fo、电子传递速率(ETR)、均随高温胁迫时间延长呈下降趋势,但耐热品种85-CT下降幅度较热敏感品种BBL-47平缓,BBL-47随高温胁迫时间延长,其叶绿素a荧光诱导动力学曲线中的第二峰(M峰)消失。
s:Two different heat-tolerance varieties of common bean (Phaseolus vulgarize L.var.85-CT&BBL-47) were used to study the difference of chlorophyll a fluorescence induction kinetics under high temperature stress (37 /27 ).The results showed that the chlorophyll fluorescence Fv/Fm and Fv/Fo as well as electron translate rate (ETR) of the two varieties decreased under high temperature stress, but the decrease in heat tolerance variety (85-CT) were less than in heat sensitive variety (BBL-47) .The second kurtosis(M) of chlorophyll fluorescence induction kinetics disappeared in BBL-47 under high temperature stress.
出处
《中国农学通报》
CSCD
2004年第1期173-175,197,共4页
Chinese Agricultural Science Bulletin
基金
国家自然基金资助项目(批准号39800095)
