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Öğe Climate Change and Global Rice Security(wiley, 2022) Wasaya, Allah; Yasir, Tauqeer Ahmad; Sarwar, Naeem; Atique-ur-Rehman; Mubeen, Khuram; Rajendran, Karthika; Hadifa, AdelRice is a first- or second-order staple food in many countries. It is mainly produced and consumed in Asia. There are so many causes of low yield of rice crops in the world. However, abiotic and biotic stresses are major factors for reducing rice yield and quality. The stresses’ share in reducing rice yield across various regions varies greatly. So, in order to adapt to and mitigate climate change, both short-term and long-term approaches are needed for ensuring food security at regional and global levels. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2022.Öğe Foliar application of putrescine alleviates terminal drought stress by modulating water status, membrane stability, and yield- related traits in wheat (Triticum aestivum L.)(Frontiers Media Sa, 2023) Wasaya, Allah; Rehman, Iqra; Din, Atta Mohi Ud; Khalid, Muhammad Hayder Bin; Yasir, Tauqeer Ahmad; Javaid, Muhammad Mansoor; El-Hefnawy, MohamedDrought stress is one of the major limitations to the growth and yield productivity of cereal crops. It severely impairs the early growing and grain -filling stages of wheat. Therefore, cost- effective and eco-friendly approaches for alleviating drought stress in cereal crops are in high demand. Polyamines, such as putrescine, have a significant effect on improving crop yield under drought- stress conditions. Therefore, the current study was executed with the aim of exploring the significance of putrescine in alleviating drought stress and improving yield- related traits in wheat. Two distinct wheat cultivars (Fakhar-e-Bhakkar and Anaj-2017) were treated with the foliar application of different concentrations (control, 0.5, 1.0, and 1.5 PPM) of putrescine (put) under two moisture conditions (well- watered and terminal drought stress). The results demonstrate that the imposition of terminal drought stress significantly reduces different physiological and yield- related traits of both wheat cultivars. The reduction of relative water content (RWC%), membrane stability index (MSI), leaf area, tillers per plant, biomass yield, number of spikelets per spike, 100-grain weight, grain yield per plant, and straw yield was greater in Anaj-2017 than in Fakhar-e-Bhakkar cultivar. The results further explain that the foliar application of increased concentrations of putrescine from 0.0 to 1.0 PPM gradually improved physiological and yield traits, whereas these traits declined with the application of putrescine at the highest dose (1.5 PPM). The exogenous application of 1.0 PPM putrescine improved the relative water content (19.76%), specific leaf area (41.47%), and leaf area ratio (35.84%) compared with the controlled treatment. A higher grain yield (28.0 g plant(-1)) and 100-grain weight (3.8 g) were obtained with the foliar application of 1.0 PPM putrescine compared with controlled treatments. The findings of this study confirm the protective role of putrescine against terminal drought stress. It is therefore recommended to use putrescine at a concentration of 1.0 PPM, which could help alleviate terminal drought stress and attain better wheat yield.Öğe Foliar application of putrescine alleviates terminal drought stress by modulating water status, membrane stability, and yield- related traits in wheat (Triticum aestivum L.) (vol 13, 1000877, 2023)(Frontiers Media Sa, 2023) Wasaya, Allah; Rehman, Iqra; Din, Atta Mohi Ud; Bin Khalid, Muhammad Hayder; Yasir, Tauqeer Ahmad; Javaid, Muhammad Mansoor; El-Hefnawy, Mohamed[Abstract Not Available]Öğe Seed Priming and Foliar Supplementation with?-aminobutyric Acid Alleviates Drought Stress through Mitigation of Oxidative Stress and Enhancement of Antioxidant Defense in Linseed (Linum usitatissimum L.)(Tech Science Press, 2023) Yasir, Tauqeer Ahmad; Ateeq, Muhammad; Wasaya, Allah; Hussain, Mubshar; Sarwar, Naeem; Mubeen, Khuram; Aziz, MudassirDrought is one of the critical limitations to agricultural soils and crop plants. Scarcity of water is increasing due to climate change that lead to increasing threats to global food security. Therefore, ecofriendly and cost effective strategies are highly desirable for mitigating drought stress along with sustainable and smart agricultural production. The aim of the study was to mitigate DS using seed priming and exogenous supplementation of beta-amino-butyric acid (BABA) in linseed (Linum usitatissimum L.). Different doses (0, 50, 100 and 150 mu M) of BABA were used for seed priming agent and foliar spraying under three soil moisture levels viz., 25% (SM25), 45% (SM45) and 65% (SM65). The response variables of both experiments included different agro-botanical traits and oxidative stress indicators such as melondialdehyde content, free proline accumulation, and antioxidant defense in plants. The linseed plants showed water stress at SM25 that reduced plant height, number of branches per plant, time taken to flower initiation and heading, and root and shoot dry weights. Additionally, the number of capsules and seeds per capsule showed a significant decline at SM25, which led to a drastic reduction in 100-seed weight yield in linseed plants in both experiments. However, seed priming and foliar supplementation with of BABA (50-100 mu M) significantly improved these morpho-agronomical attributes in linseed plants under DS. The results revealed that the BABA was fully active in linseed plants at SM25. Interestingly, the combination of SM25 with BABA significantly improved the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxidase (POD) activity, which significantly enhanced DS tolerance in linseed plants. These findings might be useful to oil seed breeders and farmers linseed for breeding program in linseed plants as well as sustainable agricultural production of oil seed crop plants.
