Performance index as a sensitive indicator of water stress in Triticum aestivum L.
By M. Živčák, Marian Brestic, K. Olšovská, P. Slamka. 2018
218 citations recorded by the source corpus.
Polyphasic chlorophyll a fluorescence represents a promising tool for detection of plant tolerance to various environmental stresses. In pot vegetation experiments, plants of seven winter wheat varieties were screened for their drought tolerance. The drought stress was initiated in plants by withholding water at the beginning of anthesis. While water content was measured continuously as relative water content (RWC), fast chlorophyll a fluorescence kinetics was measured and analysed on dehydrating intact leaves by the JIP-test (analysis of O-J-I-P fluorescence transient). Maximum quantum efficiency of PS II photochemistry (FV/FM) parameter was almost unaffected by dehydration until the severe water stress occurred. In contrast to this a continuous decrease of performance index (PIabs) parameter (Strasser et al. 1995) was observed from the very beginning of dehydration following the decrease of RWC. Statistically significant differences were also found in the PIabs parameter among all tested varieties. The results show that PIabs may serve as an index of plant/variety vitality and/or sensitivity to water stress reflecting their different drought tolerance.
Subfields: Global and Planetary Change, Plant Science
View Paper: https://www.semanticscholar.org/paper/22845dad8e47b15f9f521cf2873a467960177747
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In Global and Planetary Change
In Plant Science
- Marian Brestic
- M. Živčák
- Anjana Jajoo
- H. Shao
- Vasilij Goltsev
- Richard J. Ladle
- A. Raza
- Hazem M. Kalaji
Citations in the corpus
- Chlorophyll a fluorescence as a tool to monitor physiological status of plants under abiotic stress conditions (2016, background): “Moreover, the drought tolerance of wheat genotypes estimated from PI values recorded in drought stress also correlated well with the drought tolerance assessed by grain yield (Zivcak et al. 2008).”
- Effect of Salinity Stress on Physiological Changes in Winter and Spring Wheat (2021, background): “[45] reported that the photosynthesis efficiency of PSI of winter wheat was decreased by increasing the water stress.”
- Application of chlorophyll fluorescence performance indices to assess the wheat photosynthetic functions influenced by nitrogen deficiency. (2018, background): “However, Fv/Fm is insensitive to many factors that negatively affect plant photosynthesis, such as drought (Živčák et al. 2008b).”