• Shabana Afsar

• Irfan Aziz

• Muhammad Qasim

• Abdul Hameed Baloch

• Muhammad Noman Syed

• Salman Gulzar

تلخیص

Salsola imbricata Forssk is a leaf succulent halophyte of coastal and inland salty soils. This study was carried out to evaluate the salt tolerance range of S. imbricata and on the effects of moderate (100 mM NaCl) and high (600 mM NaCl) salinity treatments in comparison with non-saline control treatments. Shoot fresh and dry biomass increased under saline conditions indicating high salt tolerance. Root fresh biomass decreased in the high salinity treatment while root dry biomass remained unchanged with increasing salinity treatment. Leaf succulence remained unchanged while root succulence decreased under high salinity treatment. Electrolyte leakage decreased transiently in moderate salinity indicating improved ROS management at optimal conditions. Constitutively low water and osmotic potentials under saline conditions indicated its osmoregulator strategy to maintain water balance. Chlorophyll content remained unchanged while carotenoids increased progressively. Leaf light absorbance also remained unaffected with rise in salinity however, leaf reflectance increased with parallel decrease in transmittance. Relative electron transport rates peaked in non-saline control but decreased under increasing salinity treatments. Lowest photochemical quenching was coupled with highest non-photochemical quenching under 100 mM NaCl treatment. S. imbricata tended to achieve a balance between water relations, electron transport and protective energy dissipation mechanisms (higher NPQ and carotenoids) under saline conditions.

پچھلا مقالہ  

اگلا مقالہ