scholarly journals Quantitative Lasting Effects of Drought Stress at a Growth Stage on Soybean Evapotranspiration and Aboveground BIOMASS

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 18
Author(s):  
Yi Cui ◽  
Shaowei Ning ◽  
Juliang Jin ◽  
Shangming Jiang ◽  
Yuliang Zhou ◽  
...  
Keyword(s):  
Drought Stress ◽  
Aboveground Biomass ◽  
Growth Stage ◽  
Biomass Yield ◽  
Biomass Accumulation ◽  
Agricultural Drought ◽  
Drought Risk ◽  
After Effects ◽  
Effects Of Drought ◽  
High Biomass Yield

Quantifying the lasting effects of drought stress on crop growth is a theoretical basis for revealing agricultural drought risk mechanism and formulating adaptive irrigation strategies. Based on two-season pot experiments of soybean in the Huaibei Plain, quantitative responses of plant evapotranspiration and aboveground biomass at each growth stage from a drought were carried out. The results showed that drought stress at a certain stage of soybean not only significantly reduced the current evapotranspiration and aboveground biomass accumulation during this stage, compared with full irrigation, but also generated the after-effects, which resulted in the reductions of evapotranspiration and biomass accumulation at the subsequent periods. Furthermore, the damaged transpiration and growth mechanism caused by drought gradually recovered through the rewatering later, and the compensation phenomenon even occurred. Nevertheless, the specific recovery effect was decided by both the degree and period of drought before. It is practical to implement deficit irrigation at the seedling and branching stages, but the degree should be controlled. Meanwhile, it is crucial to ensure sufficient water supply during the reproductive growth phase, especially at the flowering and pod-enlargement stage, to guarantee a normal transpiration function and a high biomass yield for soybeans in the Huaibei Plain.

Effects of Drought Stress at Early Growth Stage on Response of Sugarcane to Different Nitrogen Application

Sugar Tech ◽  
2017 ◽  
Vol 20 (4) ◽  
pp. 420-430 ◽  
Author(s):  
Hoang Thai Dinh ◽  
Kenta Watanable ◽  
Hiroo Takaragawa ◽  
Yoshinobu Kawamitsu
Keyword(s):  
Drought Stress ◽  
Growth Stage ◽  
Early Growth ◽  
Nitrogen Application ◽  
Early Growth Stage ◽  
Effects Of Drought

scholarly journals Drought stress in plants: An overview on implications, tolerance mechanisms and agronomic mitigation strategies

2019 ◽  
Vol 6 (4) ◽  
pp. 389-402 ◽  
Author(s):  
Sadam Hussain ◽  
Saddam Hussain ◽  
Tauqeer Qadir ◽  
Abdul Khaliq ◽  
Umair Ashraf ◽  
...  
Keyword(s):  
Drought Stress ◽  
Biomass Accumulation ◽  
Co2 Assimilation ◽  
Mitigation Strategies ◽  
Limiting Factors ◽  
Factors Affecting ◽  
Cell Membrane Stability ◽  
Chlorophyll Contents ◽  
Final Yield ◽  
Effects Of Drought

Drought is considered as one of the major limiting factors affecting growth and productivity of crop plants. It severely affects the morphological and physiological activities of the plants and hampers the seed germination, root proliferation, biomass accumulation and final yield of field crops. Drought stress disrupts the biosynthesis of chlorophyll contents, carotene and decreases photosynthesis in plants. It gradually reduces CO2 assimilation rates owing to decrease in stomatal conductance. In addition, drought affects cell membrane stability and disrupts water relations of a plant by reducing water use efficiency. To cope with these situations, plants adopt different mechanisms such as drought tolerance, avoidance and escape. In this review, we discussed about the effects of drought on morphological and physiological characteristics of plants and suggested the different agronomic practices to overcome the deleterious effects of drought stress.

scholarly journals Does Drought Stress on Seedlings Have Longer Term Effects on Sapling Phenology, Reshooting, Growth and Plant Architecture in Quercus robur, Q. petraea and Their Morphological Intermediates?

Forests ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 1012 ◽  
Author(s):  
Kristine Vander Mijnsbrugge ◽  
Arion Turcsan ◽  
Stefaan Moreels ◽  
Michiel Van Goethem ◽  
Steven Meeus ◽  
...  
Keyword(s):  
Drought Stress ◽  
Quercus Robur ◽  
Western Europe ◽  
Plant Architecture ◽  
Growing Season ◽  
Treated Group ◽  
Sympatric Species ◽  
Drought Treatment ◽  
After Effects ◽  
Effects Of Drought

Background and Objectives: Summer droughts are expected to increase in central and western Europe both in terms of frequency and intensity, justifying studies on longer term legacies of drought stress on tree species and their hybrids. Materials and Methods: We studied the longer-term after effects of water withholding and re-watering in the first growing season of potted seedlings from the sympatric species Quercus robur L., Q. petraea (Matt.) Liebl. and their morphological intermediates. Phenology, growth, and plant architecture were examined after a cut-back of the stems at the end of the third growing season. Results: The legacy of the first-year water limitation is faded in the phenological response. Nonetheless, leaf senescence occurred later in offspring from Q. robur than in offspring from Q. petraea at the end of the fourth growing season and leafing out tended to be later in the subsequent growing season. Offspring from the intermediate forms displayed variable phenological responses. Height and radial growth were still affected by the drought stress in a taxon-dependent way, with the offspring from Q. petraea displaying growth reduction both in height and diameter, whereas offspring from Q. robur did not show any differences anymore between control and treated plants, demonstrating better post-stress recovery in Q. robur. Offspring from morphological intermediates responded again in a variable way. Although the number of reshoots after cutting back the stems was not affected anymore by the drought treatment in the first growing season, the number of side shoots on the reshoots was still reduced in the drought treated group of plants, independent of the taxon of the mother tree. Conclusions: Together, our results demonstrate the longer-lasting effects of drought stress on oak saplings with regard to growth and plant architecture, with the first being taxon dependent.

scholarly journals Winter Wheat Evapotranspiration Estimation under Drought Stress during Several Growth Stages in Huaibei Plain, China

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1208 ◽  
Author(s):  
Yi Cui ◽  
Shangming Jiang ◽  
Ping Feng ◽  
Juliang Jin ◽  
Hongwei Yuan
Keyword(s):  
Drought Stress ◽  
Winter Wheat ◽  
Water Deficit ◽  
Large Scale ◽  
Irrigation Schedule ◽  
Agricultural Drought ◽  
Growth Stages ◽  
Drought Risk ◽  
Crop Evapotranspiration ◽  
Crop Coefficients

Estimating crop evapotranspiration under drought stress provides the theoretical foundation for optimizing irrigation schedule and reducing agricultural drought risk. Winter wheat water deficit plot experiments were conducted based on large-scale weighing lysimeters in the Huaibei Plain. The response of evapotranspiration to water deficit during several growth stages was analyzed; four crop coefficients were optimized and then evapotranspiration under drought stress was estimated with the dual crop coefficient method and the genetic algorithm. Drought stress not only reduced evapotranspiration during the current stage, but this influence was also transferred to the following periods. Evapotranspiration could basically return to the normal status after rewatering if the plant did not previously suffer from serious drought stress. Therefore, severe water deficit during continuous wheat growth periods should be avoided, and the deficit intensity during each stage should be controlled. The optimized Kcb ini, Kcb mid, Kcb end and Kc max were 0.32, 1.38, 0.33 and 1.39, and the root mean square error, mean absolute error, and mean relative error of the corresponding estimated evapotranspiration under drought stress were 22.83%, 25.36%, and 11.78% less than those using recommended coefficients, respectively. These optimized crop coefficients provide references for the practical application in the Huaibei Plain, this method for estimating crop evapotranspiration under drought stress can be applied to field circumstances and other regions.

scholarly journals The Impacts of Drought Stress and Phytophthora cinnamomi Infection on Short-Term Water Relations in Two Year-Old Eucalyptus obliqua

Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 109
Author(s):  
Mashlahatul Umami ◽  
Linda M. Parker ◽  
Stefan K. Arndt
Keyword(s):  
Drought Stress ◽  
Water Relations ◽  
Phytophthora Cinnamomi ◽  
Cumulative Effect ◽  
Biomass Accumulation ◽  
Short Term ◽  
Shoot Ratio ◽  
Plant Water Potential ◽  
Plant Photosynthesis ◽  
Effects Of Drought

The effects of drought stress, Phytophthora cinnamomi infection and their interaction on water relations and growth were examined for 28 days on two year-old potted trees of Eucalyptus obliqua (L’Hér.). There were significant effects of drought stress on plant photosynthesis, stomatal conductance, biomass accumulation, plant water potential at turgor loss point and the bulk modulus of elasticity. E. obliqua was successfully infected but the trees showed only mild symptoms. Infection with P. cinnamomi led to a significant reduction in the root biomass and root-to-shoot ratio in well-watered and droughted plants but did not impact water relations. There was no observable cumulative effect of drought and P. cinnamomi infection. There are multiple potential reasons why P. cinnamomi infection did not lead to drought-like symptoms in E. obliqua, including short experimental duration, delayed infection symptoms, potential resistance of E. obliqua and a possible lower aggressiveness of the P. cinnamomi strain. Hence, our results indicate that P. cinnamomi infection will not always lead to immediate short-term symptoms, and that plants that are mildly symptomatic respond very similar to drought stress compared to non-infected trees.

scholarly journals Exogenous Application of Silicon Can Help Augment Drought Tolerance in Wheat (Triticum aestivum L.) by Enhancing Morpho-physiological and Antioxidant Potential

2021 ◽  
Author(s):  
Muhammad Aurangzaib ◽  
Zahoor Ahmad ◽  
Muhammad Imran Jalil ◽  
Muhammad Faheem Nawaz ◽  
Muhammad Rashid Shaheen ◽  
...  
Keyword(s):  
Drought Stress ◽  
Biomass Yield ◽  
Flag Leaf ◽  
Dry Weight ◽  
Potassium Silicate ◽  
Chlorophyll Contents ◽  
Exogenous Application ◽  
Effects Of Drought ◽  
Total Dry Weight ◽  
1000 Grain Weight

Abstract Drought stress is considered one of the most severe stresses, which can result in devastating yield reduction in agriculture crops. There are many approaches recommended by the researchers and adopted by the farmers to minimize the devastating effect of drought. However, exogenous application of growth regulators in combination to plant nutrients is the innovative attitude to ameliorate the shocking effects of drought stress. So we planned a study to investigate the ameliorative effect of exogenously applied potassium silicate wheat (Triticum aestivum L.) crop under water deficit conditions. The current study was conducted at the Agronomic Research Farm area, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur. RCBD-Split plot design with four repeats was used. The treatments consist on “T0” (Control), “T1” (exogenous application of potassium silicate @ 1% solution), “T2” (exogenous application of potassium silicate @ 2% solution), “T3” (exogenous application of potassium silicate @ 3% solution). The results of our study revealed that drought stress can significantly affect crop yield as a result of the reduction in chlorophyll-a (1.07), chlorophyll-b (0.49), total chlorophyll contents (1.62), flag leaf area (38.33 cm2), plant height (100.17cm), number of nodes per plant (3.91), tiller height (92.42), number of tillers m− 2 (191.17), spike length (7.58 cm), number of spikes per plant (10.25), number of grains per spike (25.08), 1000-grain weight (36.66g), total dry weight per plant (309.75g), biomass yield (23424kg/ha) and grain yield (4564.2 kg/ha). On the other hand, the exogenous application of potassium silicate at 2% solution showed promising results in terms of ameliorating the drought effect by significantly enhancing chlorophyll-a (1.21), chlorophyll-b (0.64), total chlorophyll contents (1.92), flag leaf area(45.25 cm2), plant height (123.50cm), number of nodes per plant (5.25), tiller height (99.42), number of tillers m− 2 (276.26), spike length (12.92cm), number of spikes per plant (14.25), number of grains per spike (38.33), 1000-grain weight (44.33g), total dry weight per plant (385.00g), biomass yield (24000 kg/ha) and grain yield (5074.8kg/ha). These findings led us to conclude that the exogenous application of potassium silicate has a great ability to compensate for the detrimental effects of drought in wheat crops.

Effects of drought stress on growth, photosynthesis and alkaloid accumulation of Lycoris aurea

2020 ◽  
Vol 52 (4) ◽  
Author(s):  
Juan Liang ◽  
Miaohua Quan ◽  
Chaowen She ◽  
Anna He ◽  
Xiaoliang Xiang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Lycoris Aurea ◽  
Effects Of Drought

Effects of Drought Stress on Physiological Characteristics and Dry Matter Production in Maize Silking Stage

2013 ◽  
Vol 38 (10) ◽  
pp. 1884-1890 ◽  
Author(s):  
Ren-He ZHANG ◽  
Dong-Wei GUO ◽  
Xing-Hua ZHANG ◽  
Hai-Dong LU ◽  
Jian-Chao LIU ◽  
...  
Keyword(s):  
Drought Stress ◽  
Dry Matter ◽  
Physiological Characteristics ◽  
Dry Matter Production ◽  
Matter Production ◽  
Effects Of Drought

Effects of Drought Stress on Photosynthetic Characteristics of Maize Hybrids at Seedling Stage

2015 ◽  
Vol 41 (1) ◽  
pp. 154 ◽  
Author(s):  
Xing-Hua ZHANG ◽  
Jie GAO ◽  
Wei-Li DU ◽  
Ren-He ZHANG ◽  
Ji-Quan XUE
Keyword(s):  
Drought Stress ◽  
Photosynthetic Characteristics ◽  
Seedling Stage ◽  
Maize Hybrids ◽  
Effects Of Drought
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