Impact of deficit irrigation strategies on winter wheat in semi-arid climate of sindh

Memon, Shabana; Sheikh, Irfan Ahemd; Talpur, M. A.; Mangrio, M. A.

doi:10.1016/j.agwat.2020.106389

Cited by 48 publications

(18 citation statements)

References 27 publications

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“…The current finding is consistent with Tiwari et al [79]. The reduction of plant height was also reported by Mushtaq et al and Memon et al [80,81].…”

Section: Discussionsupporting

confidence: 93%

Influence of Zinc Oxide Nanoparticles to Regulate the Antioxidants Enzymes, Some Osmolytes and Agronomic Attributes in Coriandrum sativum L. Grown under Water Stress

Khan

Ahmed

Shah³

et al. 2021

Agronomy

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Climatic variations adversely affect the limited water resources of earth which leads to water stress and influences agricultural production worldwide. Therefore, a novel approach has been introduced to improve the tolerance against water stress in herbaceous nature medicinal plants such as Coriandrum sativum by the usage of nanotechnology (foliar applied nanoparticles of ZnOx) coupled with the application of water deficit irrigation. This is an alternative water saving strategy that proved to be efficient to mitigate the Coriandrum sativum tolerance against water stress regimes for sustainable yield production through the activation of antioxidant system. Thus, the phenomena of green synthesis have been deployed for the formation of Zinc oxide nanoparticles (ZnOx NPs) from the leaf extract of Camellia sinensis L. and zinc acetate dihydrate was used as precursor. Different techniques have been used for the thorough study and confirmation of ZnOx NPs such as UV-vis spectroscopy (UV-vis) X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and Elemental dispersive spectroscopy (EDS). The prepared ZnOx NPs exhibit hexagonal wurtzite crystal nature has an average size of 37 nm with high purity. These ZnOx NPs have been further studied for their role in amelioration of water stress tolerance in Coriandrum sativum in a pot experiment. Two levels of water stress regimes were employed, IR75 (moderate) and IR50 (Intense) to evaluate the behavior of plant compared to full irrigation (FI). Results showed that under water stress regimes, the 100 ppm of prepared NPs stimulate the antioxidant system by increasing the activity of catalases (CAT), super oxidases (SOD) and ascorbate peroxidase (APX) enzymes and found the maximum at IR50, while the concentration of malondialdehyde (MDA) decreased due to increase in activity of antioxidative enzymes. Furthermore, chlorophyll content and amount of proline also enhanced by the foliar application of prepared ZnOx NPs under moderate water stress (IR75). The results suggested that all the investigated agronomic attributes significantly increased, including plant biomass and economic yield (EY), compared to non-treated ZnOx NPs plants, except for the number of primary branches and LAI. Further, the 100 ppm of prepared ZnOx NPs have great potential to improve water stress tolerance in Coriandrum sativum by improving the antioxidant enzymes activity that enhance agronomic attributes for high crop productivity that require further research at transcriptomic and genomic level.

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“…The current finding is consistent with Tiwari et al [79]. The reduction of plant height was also reported by Mushtaq et al and Memon et al [80,81].…”

Section: Discussionsupporting

confidence: 93%

Influence of Zinc Oxide Nanoparticles to Regulate the Antioxidants Enzymes, Some Osmolytes and Agronomic Attributes in Coriandrum sativum L. Grown under Water Stress

Khan

Ahmed

Shah³

et al. 2021

Agronomy

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“…is result is in agreement with Jemal et al [43] who reported 9% decline in spike length with increasing water stress. Memon et al [44] also reported a similar effect of deficit irrigation on spike length in wheat. Compared to the well-watered treatment (12), the mean NSPS under water stress (9) was reduced by 23% (Table 4).…”

Section: Morphological Traits Of Wheatmentioning

confidence: 72%

Morphological, Physiological, and Biochemical Characterization of Drought-Tolerant Wheat (Triticum spp.) Varieties

Tefera

Kebede

Tadesse

et al. 2021

International Journal of Agronomy

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Wheat is one of the most important cereal crops and extensively cultivated in wide ranges of altitudes in Ethiopia. With an alarming population growth in the era of climatic change, there is a need for further crop improvement for sustainable production. In this regard, the study was carried out at the Kulumsa Agricultural Research Center (KARC) in a rainout shelter to investigate the responses of durum and bread wheat varieties to soil water stress in terms of selected morphological, physiological, and biochemical parameters. The 2 factors were combined factorially and arranged in a randomized complete block design with 3 replications. The 12 wheat varieties, 6 bread wheat and other 6 durum wheat, were sown in pots under well-watered (100% field capacity) and water-stressed (30% field capacity) conditions. Results revealed that water stress resulted in 26%, 9%, 23%, 16%, and 11% reductions in plant height, spike length, number of spikelets spike−1, relative water, and chlorophyll contents, respectively. The tested wheat varieties under water stress produced 28% and 6% more proline content and total soluble sugar, respectively, as mitigation strategies against drought. Results further exhibited that wheat varieties significantly differed in all of the measured traits except for the plant height and relative water content. The present study verified that the biochemical parameters needs to be considered as better traits to select wheat (Triticum spp.) varieties for drought tolerance under water stress conditions.

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“…Limited irrigation and watering during the critical growth stage of crops is an advanced irrigation management method and optimization tool. The amount of this irrigation method cannot fully meet the needs of crops, but it is necessary to accurately control the time of irrigation 43,44 . Previous studies have shown that the limited irrigation technique can reduce water use and improve WUE 45,46 .…”

Section: Discussionmentioning

confidence: 99%

Single irrigation at the four-leaf stage in the spring optimizes winter wheat water consumption characteristics and water use efficiency

Bao

Liu

Hou

et al. 2022

Preprint

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Water scarcity is a major limiting factor for crop production in North China Plain (NCP), which produces the majority of the country's winter wheat (Triticum aestivum L.). The objective of this three-year field study was to see if and when irrigation one-time in spring improves grain yield and water use efficiency. Four sets of irrigation were established at the 3-leaf visible stage (L3) and the L4, L5, and L6 stages. The spike number, 1,000-grain weight, and water consumption increased progressively when irrigation time was delayed, whereas grain yield, grain number, dry matter, harvest, and WUE grew, then dropped, and peaked at L4. The increased grain number can be attributed to the L4's higher daily water consumption and water consumption percentage than the L3, L5, and L6 at the jointing-anthesis stages. L4 had a shorter cumulative period of soil drought stress (37 days), whereas L3, L5, and L6 had 40, 42, and 43 days, respectively. Furthermore, flag leaf senescence was postponed in L4 with a better post-anthesis leaf area index, photosynthetic rate, chlorophyll content, stronger superoxide dismutase activity, and reduced malondialdehyde concentration. As a result, single irrigation at the 4-leaf visible stage optimized water deficit and consumption before and after anthesis, resulting in higher yield and WUE in the NCP.

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Impact of deficit irrigation strategies on winter wheat in semi-arid climate of sindh

Cited by 48 publications

References 27 publications

Influence of Zinc Oxide Nanoparticles to Regulate the Antioxidants Enzymes, Some Osmolytes and Agronomic Attributes in Coriandrum sativum L. Grown under Water Stress

Influence of Zinc Oxide Nanoparticles to Regulate the Antioxidants Enzymes, Some Osmolytes and Agronomic Attributes in Coriandrum sativum L. Grown under Water Stress

Morphological, Physiological, and Biochemical Characterization of Drought-Tolerant Wheat (Triticum spp.) Varieties

Single irrigation at the four-leaf stage in the spring optimizes winter wheat water consumption characteristics and water use efficiency

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