Yazar "Iqbal, M. A." seçeneğine göre listele

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    EXOGENOUSLY APPLIED PROLINE MITIGATES ADVERSE EFFECTS OF SALT STRESS IN WHEAT ( TRITICUM AESTIVUM ) THROUGH DIFFERENTIAL MODULATION OF ANTIOXIDATIVE DEFENCE SYSTEM AND OSMOLYTES ACCUMULATION
    (Aloki Applied Ecological Research And Forensic Inst Ltd, 2024) Attiq, M.; Ahmad, M. A. S.; Ali, M. F.; Alvi, A. K.; Rani, W.; Iqbal, M. A.; Al-ashkar, I.
    Soil salinity is a major environmental problem all over the globe. This issue is of great concern and needs special attention as it reduces fertility of the agricultural land and retards seedlings development and growth. Recently various techniques are under consideration to reclaim salt affected soils. Imparting tolerance against salt stress by employing organic supplements is one of the useful methods. In this study, effects of exogenously applied proline (50 mM and 100 mM) on the germination, growth and biochemical attributes of two cultivars of Triticum aestivum L., namely Aanj 2017 and Faisalabad 2008 at the different levels of salt stress (50 mM and 100 mM) were examined. Plants were randomly arranged in control groups (no salt and proline treatment), different levels of salinity and proline, and their combined application. The salt stress (NaCl) suppressed the parameters related to germination, growth and biochemical compositions in both genotypes especially in Faisalabad 2008 was badly stunted. Exogenously applied proline has tremendously counteracted the adverse effects of salinity in both genotypes by upregulation of antioxidant defense system, promoting the efficiency of photosynthetic pigments and flavonoids, improvements in uptake of mineral ions and water, however, the performances of Aanj 2017 surpassed in the presence of proline.
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    Öğe
    WHEAT (TRITICUM AESTIVUM L.) PRODUCTION UNDER DROUGHT AND HEAT STRESS - ADVERSE EFFECTS, MECHANISMS AND MITIGATION: A REVIEW
    (Corvinus Univ Budapest, 2019) El Sabagh, A.; Hossain, A.; Barutcular, C.; Islam, M. S.; Awan, S., I; Galal, A.; Iqbal, M. A.
    Heat and drought stresses are the most important abiotic factors that reduce crops productivity by affecting various physiological and biochemical processes. Thus, selecting cultivars with better drought or heat stress tolerance or breeding for stress tolerance will be helpful in enhancing crop productivity under harsh environments. This review elaborates the physiological basis of high temperature and drought stress tolerance in wheat which can be used as selection criteria in wheat breeding program. In addition, some agronomic selection criteria which are valid and useful in selecting stress tolerant wheat species and cultivars. The review also discussed the valid usage of stress tolerance indices (such as mean productivity (MP), geometric mean productivity (GMP), yield index (YI), yield stability index (YSI), relative productivity (RP%), stress susceptibility index (SSI), and the tolerance index (TOL)) to scan the genotypes against drought and heat stress. Beside these, exogenous application of stress signaling compounds, osmolytes, or certain inorganic salts play a vital role for alleviating adverse effects of abiotic stresses for sustainable wheat production. In addition, applications for soil amendments will also helpful in increasing wheat crop productivity under stressful conditions. All these strategies may be helpful to meet the food demands of the increasing population.