Effect of potassium nitrate seed priming on allometry of drought-stressed cotton (Gossypium hirsutum L.)

Seed priming with KNO3 mediates biochemical processes to inhibit lead toxicity in maize (Zea mays L.)

“…The reduced chlorophyll and carotenoid contents indicates the specific response of the maize seedlings to Pb toxicity due to inhibition of electron transport in photosystems and lipid peroxidation mediated degradation of thylakoid membrane . KNO 3 seed priming significantly enhanced the photosynthetic pigments of Pb‐stressed maize plants, which might be attributed to positive influence of N and K on physio‐biochemical processes of plants like increased nitrate reductase activity due to activation of antioxidative enzymes (also observed in the present study) to counteract the oxidative stress . It is well established that nitrate reductase plays a pivotal role in activation of antioxidant machinery to scavenge ROS responsible for the instability of photosynthetic complexes .…”

“…a). Treatment of seeds with inorganic salts has been reported to improve growth and quality of several plants such as wheat, mungbean, cotton, tomato and maize . A decrease in physiological indices in metal stressed plants can be considered as a indicator of metal toxicity that negatively affects the index values .…”

“…Our results are consistent with the reports by Bian et al . (for Sorbus pohuashanensis ) and Shafiq et al . (for Gossypium hirsutum ) who observed high germination percentage in KNO 3 treated seeds subjected to high temperature and drought stress conditions, respectively.…”

“…Similarly, nitrogen is an essential element for healthy and vigorous plant growth at early growth stages . The positive role of KNO 3 seed priming against various abiotic stresses such as drought, salinity, high temperature and cadmium toxicity is well reported; however, reports regarding the possible effects of KNO 3 seed priming on growth and Pb accumulation in plant species are scant. The present study was carried out with the hypothesis that an exogenous KNO 3 supply significantly ameliorates Pb induced toxicity in Zea mays .…”

Effect of temperature regimes, seed priming and priming duration on germination and seedling growth on American cotton

“…2013). KNO priming also improved shoot and root growth of cotton seedlings under drought stress (Shafiq ., 2015). The priming induced increase in the rate of seed germination has been associated with the initiation of germination related processes, repair processes and increased levels of various free radical scavenging enzymes, such as superoxide dismutase, catalase and peroxidase (Vazirimehr ., 2014).…”