CAJ | 학술논문

为探讨氟对茶树[Camellia sinensis(L.) O. Kuntze]叶片叶绿素荧光特性的影响，采用盆栽沙培法，用不同浓度的NaF溶液处理6周，对茶树叶片的叶绿素荧光特性进行研究。结果表明，用600 mg L–1的氟处理，茶苗叶片的OJIP曲线O相呈小幅度上升，P相下降得非常明显，IP相显著下降，出现清晰的L点(150μs)和K点(300μs)；经过氟处理的茶苗叶片I点、J点的相对可变荧光和耗散能增加；荧光参数RC/CSo、ETo/ABS、PIabs、PIcs等明显下降，而DIo/RC、DIo/CSo和DIo/ABS等参数大幅度增加；叶片氟含量与ETo/TRo、REo/ABS、PICS呈负相关，与DIo/RC呈正相关。因此，氟胁迫处理削弱了茶树叶片的光合电子传递能力，影响了光合机构的作用，同时叶片以增加自身热耗散来防止受到光抑制和光破坏。
위탐토불대다수[Camellia sinensis(L.) O. Kuntze]협편협록소형광특성적영향，채용분재사배법，용불동농도적NaF용액처리6주，대다수협편적협록소형광특성진행연구。결과표명，용600 mg L–1적불처리，다묘협편적OJIP곡선O상정소폭도상승，P상하강득비상명현，IP상현저하강，출현청석적L점(150μs)화K점(300μs)；경과불처리적다묘협편I점、J점적상대가변형광화모산능증가；형광삼수RC/CSo、ETo/ABS、PIabs、PIcs등명현하강，이DIo/RC、DIo/CSo화DIo/ABS등삼수대폭도증가；협편불함량여ETo/TRo、REo/ABS、PICS정부상관，여DIo/RC정정상관。인차，불협박처리삭약료다수협편적광합전자전체능력，영향료광합궤구적작용，동시협편이증가자신열모산래방지수도광억제화광파배。
The objective was to understand the effect of fluoride (F) stress on chlorophyll fluorescence in tea [Camellia sinensis(L.) O. Kuntze ‘Ruixiang’] leaves. Tea seedlings at 10-month-old grown in pots were fertilized with NaF three times weekly for 6 weeks. The results showed that O phase in OJIP curve rose a little treated with 600 mg L–1 NaF, and P phase and IP phase decreased obviously, L-step at about 150 μs and K-step at about 300 μs appeared. Under F stress, the lfuorescence parameters, such as RC/CSo, ETo/ABS, REo/ETo, REo/ABS, PIabs and PIcs decreased in tea leaves, while VJ, VI, DIo/RC, DIo/CSo, DIo/ABS and dissipated energy increased. There were negative correlations between F content in tea leaves and ETo/TRo, REo/ABS and PICS, but a positive correlation with DIo/RC. Therefore, the ability of photosynthetic electron transfer in tea leaves was weakened under F stress, the whole electron transport chain from PSII to PSI was affected, meanwhile, leaves could prevent light suppression and light damage by increasing heat dissipation itself.