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中国农学通报 ›› 2004, Vol. 20 ›› Issue (1): 173-173.

所属专题: 园艺

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两种不同耐热性菜豆品种在高温胁迫下叶绿素a荧光参数的差异

高丽红 尚庆茂 马海艳   

  • 出版日期:2004-02-05 发布日期:2004-02-05

The Difference of Chlorophyll a Fluorescence Parameter in two Common beans Varieties with Heat Tolerance Under High Temperature Stress

Gao lihong Shang qingmao Ma haiyan   

  • Online:2004-02-05 Published:2004-02-05

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。

Abstract: 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.