Effect of Low Temperature in Spring on Yield and Photosynthetic Characteristics of Wheat

Wang, Ruixia; Yan, C. R.; Zhang, Xiuying; Sun, Guo-Zhong; Qian, Zhao-Guo; Qi, Xiaobin; Mou, Qiu-Huan; Xiao, Shi-he

doi:10.3724/sp.j.1006.2018.00288

Cited by 5 publications

(3 citation statements)

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“…Pre-sowing treatment of seeds with various growth stimulants is considered one of the ways to increase the resistance of plants to stressful conditions due to low and high temperatures (He et al, 2018;Wang et al, 2018). Among them, calcium chloride under optimal temperature conditions increased the germination potential and rate, viability indices, and seed energy of amaranth seeds, while reducing the germination time.…”

Section: Discussionmentioning

confidence: 99%

Seed Priming Effects on Morphological Traits of Amaranthus Hypochondriacus Under Optimal and Low Temperatures

2022

SABRAOJBG

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The recent research evaluated the effects of growth stimulant seed treatment on the morphological traits of Amaranthus hypochondriacus L. cv. ‘Krepysh’ grown under optimal and low positive temperature conditions. The seeds were continuously soaked for 4 h in five different solutions of growth stimulants, i.e., salicylic acid (SAA - 138 mg/L), hydrogen peroxide (H2O2 - 10 and 50 mmol/L), calcium chloride (CaCl2 - 3000 mg/L), succinic acid (SUA - 500 mg/L), and control (distilled water). The stimulant-primed seeds were germinated at optimal temperature (23°C) and continued to germinate at low temperatures of 10°C (T10) and 23°C (T23). The results showed that seed germination rates viz., germination potential (GP), germination rate (GR), germination index (GI), viability index (VI), and seed vigor index (SVI), were significantly improved with seed quality potential compared with the control. Under low positive temperature, seeds treated with succinic acid, H2O2, and CaCl2 had the most significant effects on improving seed quality and induced cold resistance in the seeds. The morphological indicators of amaranth seedlings, i.e., biomass, hypocotyl, and root length, were also significantly improved with seed treatment by growth stimulants. Priming of amaranth seeds with hydrogen peroxide and succinic acid showed a greater increase in seedlings’ biomass at room (23°C) and low (10°C) temperatures. The seed treatment with SUA and SAA significantly contributed to enhancing the hypocotyl length. The amaranth roots achieved maximum length after seed treatment with SUA and CaCl2. In general, the seed treatment effects on seedling's biomass under chilling stress were associated with the potential of inducing cold tolerance in seedlings.

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Section: Discussionmentioning

confidence: 99%

Seed Priming Effects on Morphological Traits of Amaranthus Hypochondriacus Under Optimal and Low Temperatures

2022

SABRAOJBG

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“…In agricultural production, winter wheat plays a pivotal role, crucial for ensuring China's food security and promoting sustainable development in agriculture (Zhang et al., 2020). Nonetheless, there has been an increase in the frequency of extreme weather occurrences in recent years, and low‐temperature stress has emerged as a significant meteorological factor influencing winter wheat growth and development (Wang, Yan, et al., 2018). Low‐temperature stress generally refers to environmental temperatures that fall below the minimum required for growth or to extended periods of insufficient heat, which affect winter wheat's growth and development and lower yields.…”

Section: Introductionmentioning

confidence: 99%

Study on the impact of low‐temperature stress on winter wheat based on multi‐model coupling

Chen,

Zhang,

Liu

et al. 2024

Food and Energy Security

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Crop growth models, such as the WOrld FOod STudies (WOFOST) model, mimic the mechanistic processes involved in crop development, growth, and yield production. The accuracy of simulation is decreased in unfavorable low‐temperature settings because these models do not accurately represent crop response processes in low‐temperature stress. Enhancing the WOFOST crop growth model's accuracy in simulating crops' responses to cold temperatures is the aim of this work. Given its vulnerability to low temperatures, the inquiry uses winter wheat in Henan Province as a focal point. It integrates the WHEATGROW wheat phenology model with the Frost model of Lethal Temperature 50 (FROSTOL) inside the framework of the crop growth model. This link aims to improve simulation accuracy and supplement the model's mechanisms, particularly when it comes to the impact of low temperatures on crop development. The study uses Long Short‐Term Memory networks to build a yield model that integrates remote sensing data with information from simulated crop models. Under low temperatures, the leaf area index, total above ground biomass, and total weight of storage organs of the model WWF—which combines FROSTOL and WHEATGROW with WOFOST—show a considerable decline. It was discovered that there is a greater improvement in simulation accuracy of the linked model WWF relative to the WOFOST model in frost years than in normal years, based on a comparison analysis between typical frost years and normal years. To be more precise, the improvement is 8.03% in frost years and 1.98% in regular years. When all is said and done, the coupled model advances our knowledge of how winter wheat is impacted by low temperatures.

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“…Photosynthesis is the source of plant material metabolism and energy transformation [ 23 ]. It is sensitive to abiotic stress, such as drought stress and high- and low-temperature stress [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Low-Temperature Stress during the Anther Differentiation Period on Winter Wheat Photosynthetic Performance and Spike-Setting Characteristics

Yan

Liu

Chen

et al. 2022

Plants

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Climate change has caused frequent extreme low-temperature events to threaten global food security. Spring low-temperature stress is one of the major limiting factors for high and stable yields of wheat. We used two wheat varieties differing in spring cold-sensitivity (cold-tolerant variety Yannong 19 and cold-sensitive variety Xinmai 26) to examine the effects of low-temperature stress during the anther differentiation period on wheat photosynthetic performance and spike-setting characteristics. Low-temperature stress was simulated in a climate box at −2 °C, 0 °C or 2 °C (night) and 15 °C (day) for 24 h, 48 h or 72 h. With the extension of the treatment time and the decrease of temperature, the photosynthetic rate, stomatal conductance and transpiration rate of wheat leaves gradually decreased. All treatments except −2 °C for 72 h recovered slowly within 7–15 days after treatment. Low-temperature stress greatly reduced grains per spikelet, 1000-grain weight and yield per plant. By analyzing the spikelets in different stalk locations (upper, middle and lower), we found that the number of upper spikelets was significantly less than lower and middle spikelets after low-temperature stress. The sterile grain of upper spikelets (Xinmai 26, for example) can reach 100% at −2 °C for 48 h and 72 h, and the yield loss rate was 90.52% at 2 °C for 24 h, which was much higher than for the lower spikelets (60.73%) and middle spikelets (50.94%). Overall, these findings suggest that low-temperature stress during the anther differentiation period alters the photosynthetic activity involved in the accumulation of dry matter in wheat, which leads to delaying young spike growth, especially for upper spikelets, and ultimately in a decrease in yield.

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Effect of Low Temperature in Spring on Yield and Photosynthetic Characteristics of Wheat

Cited by 5 publications

References 0 publications

Seed Priming Effects on Morphological Traits of Amaranthus Hypochondriacus Under Optimal and Low Temperatures

Seed Priming Effects on Morphological Traits of Amaranthus Hypochondriacus Under Optimal and Low Temperatures

Study on the impact of low‐temperature stress on winter wheat based on multi‐model coupling

Effects of Low-Temperature Stress during the Anther Differentiation Period on Winter Wheat Photosynthetic Performance and Spike-Setting Characteristics

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