Effectiveness of potassium sulfate in mitigating salt-induced adverse effects on different physio-biochemical attributes in sunflower (Helianthus annuus L.)

Growth and nutrient status of olive plants as influenced by foliar potassium applications

“…On the other hand, in the present study, it appears that in comparison to the control, the dry matter percentage was significantly increased only in the treatments with K 2 SO 4 . Similar results were found in foliar treatments with K 2 SO 4 which improved the shoot FW of sunflower (Saeed Akram et al, 2009). This may be due to the beneficial effect of sulphate in enhancing dry matter percentage.…”

Promotive effect of exogenously applied thiourea on key physiological parametersand oxidative defense mechanism in salt-stressed Zea mays L. plants

“…Furthermore, this enhancement in biomass production in maize plants due to TU application might have been due to its role in cellular osmotic adjustment (Burman et al, 2004;Seckin et al, 2009). A number of studies have shown that saline stress can cause alterations in leaf fluorescence of different crops such as sunflower (Akram et al, 2009), okra (Saleem et al, 2011), eggplant (Shaheen et al, 2012), and wheat (Habib et al, 2013;Perveen et al, 2013). In the current study, F v / F m of both maize cultivars increased due to exogenously applied TU under saline conditions, which is parallel to the findings of Pandey et al (2013), who documented improved chlorophyll fluorescence in salt stressed Indian mustard (Brassica juncea) plants due to exogenously applied TU and they attributed this growth improvement to TU-induced high efficiency of PSI and PSII.…”

Exogenously applied nitric oxide confers tolerance to salinity-induced oxidativestress in two maize (Zea mays L.) cultivars differing in salinity tolerance

“…The value of F v /F m is often used as an indicator of stress tolerance or photoinhibition in PS-II activity (Calatayud and Barreno, 2004). Several recent studies have reported that saline stress can result in alterations of leaf fluorescence in a broad range of crops such as sunflower (Akram et al, 2009), okra (Saleem et al, 2011), wheat (Habib et al, 2013;Perveen et al, 2013), and eggplant (Shaheen et al, 2012). This reduction in maximum fluorescence yield (F v /F m ) by salinity stress might be due to the inactivation and destruction of the PS-II reaction center (Santos et al, 2001;Yan et al, 2012;Ashraf and Harris, 2013;Dong et al, 2014).…”

“…However, exogenously applied NO lowered the activities of all the examined antioxidant enzymes and the levels of H 2 O 2 and MDA in the maize plants exposed to saline stress (Tables 6 and 7). Ashraf and Akram (2009) suggested that plants with greater antioxidant potential are better able to scavenge these ROS and hence have greater stress tolerance. In view of these results, it is suggested that NO application reduced oxidative damages to membranes of cellular organelles, which is evident by the lower level of H 2 O 2 and MDA in both maize cultivars.…”