Chlorophyll fluorescence parameters under drought stress in three plants of Lonicera
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摘要: 以红花金银花Lonicera japonica Chinensis,台尔曼忍冬Lonicera tellmanniana和京红久忍冬Lonicera heckrottii为试验材料,研究了干旱胁迫处理下3种金银花叶绿素荧光参数的变化。结果表明:随着干旱胁迫程度的增加,3种金银花初始荧光(F0)和非光化学淬灭系数(qN)呈逐渐上升的趋势,而最大荧光(Fm),光系统Ⅱ(PSⅡ)潜在光化学效率(Fv / F0),PSⅡ最大光化学效率(Fv / Fm),PSⅡ光化学量子产量(y),表观光合电子传递速率(ETR)和光化学淬灭系数(qP)呈逐渐下降的趋势。但是,3种金银花叶绿素荧光参数的变化幅度不同,其中红花金银花变化幅度最小,京红久忍冬居中,台尔曼忍冬最大,3种金银花抗旱能力排序为红花金银花>京红久金银花>台尔曼忍冬。图4参21Abstract: Changes in chlorophyll fluorescence parameters under drought stress for three honeysuckle (Lonicera japonica Chinensis,Lonicera tellmanniana and Lonicera heckrottii) were studied. Results showed that minimal fluorescence (F0) and the non-photochemical quenching coefficient (qN) increased with the number of drought stress days;whereas maximal fluorescence (Fm),potential photochemical efficiency of PSⅡ(Fv /F0),maximal photochemical efficiency of PSⅡ (Fv /Fm),effective quantum yield of PSⅡ photochemistry (y),apparent electron transport rate (ETR),and the photochemical quenching coefficient (qP) gradually decreased. Chlorophyll fluorescence parameters under drought stress varied in the order:L. japonica Chinensis > L. tellmanniana > L. heckrottii. Thus,drought resistance was also in this order. [Ch,4 fig. 21 ref.]
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Key words:
- botany /
- Lonicera (honeysuckle) /
- drought stress /
- chlorophyll fluorescence
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.04.008
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