NDLI: Responses of photosynthetic apparatus in sunflower cultivars to combined drought and salt stress

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Responses of photosynthetic apparatus in sunflower cultivars to combined drought and salt stress

Content Provider	Semantic Scholar
Author	Umar, Mulawan Uddin, Zakir Siddiqui, Zamin Shaheed
Copyright Year	2019
Abstract	Response of photosynthetic apparatus in some sunflower cultivars, i.e., S.28111, Hysun-33, Hysun-39, and SF0049, to salt, drought, and combined stresses were studied. The combined stress caused severe damage to photosynthetic apparatus as compared to single stress. The maximum quantum yield of PSII, phenomenological fluxes, plastoquinone pool size, performance indexes, and driving force of absorption were greatly affected by the combined stress. Among the cultivars, the combined stress produced synergistic effect (greater damage) in Hysun-33 and cross-tolerance (lesser damage) in S.28111. Similarly, concerning the ion imbalance, S.28111 and SF0049 showed lower Na+ and Cl- concentrations with lesser electrolyte leakage as compared to Hysun-33 and Hysun-39 under salt and combined stress. Results revealed that the disturbance in photosynthetic performance could be easily determined using JIP test by measuring chlorophyll a fluorescence. This information can be useful for the screening of oil-seed crop plants having better photosynthetic performance under salinized and desertified conditions.
Starting Page	627
Ending Page	639
Page Count	13
File Format	PDF HTM / HTML
DOI	10.32615/ps.2019.043
Volume Number	57
Alternate Webpage(s)	https://ps.ueb.cas.cz/pdfs/phs/2019/02/36.pdf
Alternate Webpage(s)	https://doi.org/10.32615/ps.2019.043
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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