Gene

Ecology

Amino acid

Biology

Honour

Archaeology

Biochemistry

Salinity

Botany

Sweet sorghum

Chlorophyll fluorescence

Genetics

Proline

Sorghum

Geography

Genotype

Agronomy

Horticulture

Photosynthesis

Sorghum bicolor

Photosynthetica

The effect of salinity on primary photochemical reactions (using JIP-test) in six sweet sorghum genotypes was tested.An increase in salt concentrations induced significantly the accumulation of proline and caused a decline in leaf osmotic potential.Except for 100 mM NaCl concentration, salinity significantly decreased chlorophyll content and photosynthetic efficiency of plants.Increasing salinity led to a higher accumulation of QB-nonreducing PSII reaction centers.K-step in OJIP fluorescence transient was observed for the most sensitive genotypes under the high NaCl concentration.The studied sorghum genotypes responded differently to salinity stress.Thus, the study helps understand the plant tolerance mechanisms of different sweet sorghum genotypes to increasing salinity stress.The study also confirmed that the use of JIP-test is suitable for the identification of sorghum genotypes according to their growth under salinity stress.

Special issue in honour of Prof. Reto J. Strasser - JIP-test as a tool to identify salinity tolerance in sweet sorghum genotypes