Response of chlorophyll fluorescence parameters to drought stress in sugar beet seedlings
Response of chlorophyll fluorescence parameters to drought stress in sugar beet seedlings
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DOI：
10.1134/s1021443713020155
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发表时间：
2013-05-01
影响因子：
1.4
通讯作者：
Zhang, S. Y.
中科院分区：
文献类型：
--
作者：
Li, G. L.;Wu, H. X.;Zhang, S. Y.
比较了甜菜和甜菜的叶绿素荧光参数。耐旱性不同的物种。结果表明，不同甜菜品种对干旱胁迫的反应不同。在耐旱甜菜中，F(0)略有增加，而qN显著增加，表明这些植物对PSII反应中心具有保护作用。F(V)/F(M)和qP在干旱胁迫初期略有下降，这表明干旱胁迫对PSII反应中心的开放程度影响较小，因此植株受害不严重。产率和电子转移速率的下降进一步表明了这一点。叶绿素荧光参数稳定，可作为甜菜幼苗早期抗旱性的重要指标。
We compared the parameters of chlorophyll fluorescence between two sugar beet (Beta vulgaris L.) species differing in drought tolerance. Our results indicated that there were different responses to the drought stress of these sugar beet species. In drought-tolerant sugar beet, the F (0) increased slightly, while qN increased substantially, indicating that these plants can protect PSII reaction centers from the damage. F (v)/F (m) and qP decreased slightly during the initial period of drought stress; this suggests that there is a slight impact of drought stress on the openness of PSII reaction centers, and thus the plants did not suffer seriously. This was further shown by the decreased Yield and electron transfer rate. The parameters of chlorophyll fluorescence were stable and can be used as an important indicator for sugar beet seedlings in the early drought tolerance.