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Role of foliar spray of plant growth regulators in improving photosynthetic pigments and metabolites in Plantago ovata (Psyllium) under salt stress–A field appraisal

引用

BIOCELL 2023年第3期47卷 523-532页

作者： ABDUL SAMAD kanval shaukat MAHMOOD-UR-REHMAN ANSARI MEREEN NIZAR NOREEN ZAHRA AMBREEN NAZ HAFIZ MUHAMMAD WALEED IQBAL ALI RAZA VLADAN PESIC IVICA DJALOVIC Department of Botany University of BalochistanQuetta08770Pakistan Department of Bioinformatics and Biotechnology Government College UniversityFaisalabad38000Pakistan Department of Botany University of AgricultureFaisalabad38040Pakistan Department of Food Science and Technology Muhammad Nawaz Shareef University of AgricultureMultan66000Pakistan Department of Agronomy Muhammad Nawaz ShareefUniversity of AgricultureMultan66000Pakistan College of Agriculture Fujian Agriculture and Forestry UniversityFuzhou350002China Department of Genetics and Plant Breeding Faculty of AgricultureUniversity of BelgradeBelgrade11000Serbia Institute of Field and Vegetable Crops National Institute of the Republic of SerbiaMaxim Gorki 30Novi Sad21000Serbia

Salinity is one of the major abiotic factors that limit the growth and productivity of *** application of plant growth regulators(PGRs)may help plants ameliorate the negative impacts of ***,a field experiment was conducted at the Botanical Garden University of Balochistan,Quetta,to explore the potential role of PGRs,i.e.,moringa leaf extract(MLE;10%),proline(PRO;1μM),salicylic acid(SA;250μM),and thiourea(TU;10 mM)in ameliorating the impacts of salinity(120 mM)on Plantago ovata,an important medicinal *** hampered plant photosynthetic pigments and metabolites but elevated oxidative ***,foliar application of PGRs enhanced photosynthetic pigments,including Chl b(21.11%),carotenoids(57.87%)except Chl a,activated the defense mechanisms by restoring and enhancing the metabolites,i.e.,soluble sugars(49.68%),soluble phenolics(33.34%),and proline(31.47%),significantly under salinity ***,foliar supplementation of PGRs under salt stress led to a decrease of about 43.02%and 43.27%in hydrogen peroxide and malondialdehyde content,***,PGRs can be recommended for improved photosynthetic efficiency and metabolite content that can help to get better yield under salt stress,with the best and most effective treatments being those of PRO and MLE to predominately ameliorate the harsh impacts of salinity.

关键词： Abiotic stress Proline Photosynthetic pigments Thiourea Salinity Salicylic acid

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