Salinity is a major abiotic stress that hinders plant development and productivity and influences agricultural yield.Seed priming is a technique used to boost germination and seedling growth under abiotic stress.A pot...Salinity is a major abiotic stress that hinders plant development and productivity and influences agricultural yield.Seed priming is a technique used to boost germination and seedling growth under abiotic stress.A pot experiment was conducted to evaluate the impact of seed priming with potassium nitrate(KNO_(3))at various levels(0%,0.50%,1.00%and 1.50%)under salt stress(0,75,100 mM NaCl)on two maize verities(MNH360 and 30T60)for the growth,development and metabolic attributes results revealed that in maize variety MNH360,KNO_(3)priming’s significantly enhanced growth parameters than in maize variety 30T60 under control and salt-stressed conditions.Priming with KNO_(3)enhanced carotenoids and total chlorophyll in the 30T60 variety that protected the maize plants from salt stress.Nevertheless,it was shown that priming with 1.00%KNO_(3)acts as safeguarded to protect them from oxidative damage by salt stress minimizing reactive oxygen species(ROS)formation through increased levels of malondialdehyde(MDA),catalase(CAT),peroxidase(POD),ascorbate peroxidase(APX),and total soluble protein.The findings of the present study confirm that the use of the KNO_(3)seed priming technique is a lowcost,environmentally friendly technique for mitigating adverse impacts of salt stress in maize crops by activating the antioxidant defense system and improving chlorophyll and osmolyte contents.展开更多
文摘Salinity is a major abiotic stress that hinders plant development and productivity and influences agricultural yield.Seed priming is a technique used to boost germination and seedling growth under abiotic stress.A pot experiment was conducted to evaluate the impact of seed priming with potassium nitrate(KNO_(3))at various levels(0%,0.50%,1.00%and 1.50%)under salt stress(0,75,100 mM NaCl)on two maize verities(MNH360 and 30T60)for the growth,development and metabolic attributes results revealed that in maize variety MNH360,KNO_(3)priming’s significantly enhanced growth parameters than in maize variety 30T60 under control and salt-stressed conditions.Priming with KNO_(3)enhanced carotenoids and total chlorophyll in the 30T60 variety that protected the maize plants from salt stress.Nevertheless,it was shown that priming with 1.00%KNO_(3)acts as safeguarded to protect them from oxidative damage by salt stress minimizing reactive oxygen species(ROS)formation through increased levels of malondialdehyde(MDA),catalase(CAT),peroxidase(POD),ascorbate peroxidase(APX),and total soluble protein.The findings of the present study confirm that the use of the KNO_(3)seed priming technique is a lowcost,environmentally friendly technique for mitigating adverse impacts of salt stress in maize crops by activating the antioxidant defense system and improving chlorophyll and osmolyte contents.
