Effect of timing of heat stress during grain filling in two wheat varieties under moderate and very high temperature

Song, Wencheng; Zhao, Lanfei; Zhang, X. M.; Zhang, Yan Ming; Li, J. L.; Zhang, L. L.; Song, Q. J.; Zhao, Hongxia; Zhang, Yiying; Zhang, C. L.; Xin, Wei; Sun, Lv; Zhang, Xiao

doi:10.5958/0975-6906.2015.00018.8

Cited by 15 publications

(8 citation statements)

References 18 publications

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“…Night temperatures of 20 and 23°C reduced the grain-filling period by 3 to 7 days (Prasad et al 2008a). Recently, Song et al (2015) observed a significant reduction in the rate of grain filling in wheat cultivars at day/night temperature of 32/22°C when compared with that of 25/15°C.…”

Section: Grain Number Grain Filling and Grain Qualitymentioning

confidence: 99%

“…Grain weight Sharma et al (2008); Sareen et al (2012), Bennani et al (2016) b. Grain filling rate and duration Nawaz et al (2013), Khan and Kabir (2014), Song et al (2015) c. Number of fertile spikes Khan and Kabir (2014), Bennani et al (2016) 3.2.1 Conserving soil moisture A continuous supply of water is necessary for sustaining the grain-filling rate and duration, and grain size in wheat. This could not be possible in rain-fed wheat growing area, but here, mulching can be the best option for maintaining optimum moisture and thermal regimes in the soil system.…”

Section: Agronomic Managementmentioning

confidence: 99%

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Heat stress effects and management in wheat. A review

Akter

Islam

2017

Agron. Sustain. Dev.

334

195

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Increasing temperature and consequent changes in climate adversely affect plant growth and development, resulting in catastrophic loss of wheat productivity. For each degree rise in temperature, wheat production is estimated to reduce by 6%. A detailed overview of morpho-physiological responses of wheat to heat stress may help formulating appropriate strategies for heat-stressed wheat yield improvement. Additionally, searching for possible management strategies may increase productivity and sustainability of growing wheat. The major findings from this review are as follows: (1) heat stress significantly reduces seed germination and seedling growth, cell turgidity, and plant water-use efficiency; (2) at a cellular level, heat stress disturbs cellular functions through generating excessive reactive oxygen species, leading to oxidative stress; (3) the major responses of wheat to heat stress include the enhancement of leaf senescence, reduction of photosynthesis, deactivation of photosynthetic enzymes, and generation of oxidative damages to the chloroplasts; (4) heat stress also reduces grain number and size by affecting grain setting, assimilate translocation and duration and growth rate of grains; (5) effective approaches for managing heat stress in wheat include screening available germplasm under field trials and/or employing marker-assisted selection, application of exogenous protectants to seeds or plants, mapping quantitative trait locus conferring heat resistance and breeding; (6) a well-integrated genetic and agronomic management option may enhance wheat tolerance to heat. However, the success of applying various techniques of heat stress management requires greater understanding of heat tolerance features, molecular cloning, and characterization of genes. The overall success of the complex plant heat stress management depends on the concerted efforts of crop modelers, molecular biologists, and plant physiologists.

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Section: Grain Number Grain Filling and Grain Qualitymentioning

confidence: 99%

Section: Agronomic Managementmentioning

confidence: 99%

Heat stress effects and management in wheat. A review

Akter

Islam

2017

Agron. Sustain. Dev.

334

195

View full text Add to dashboard Cite

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“…Heat stress impairs grain filling in wheat; temperatures >25°C decreased the grain‐filling duration by 12 days (Yin et al, 2009), reduced grain yields due to reduced leaf and ear photosynthesis (Akter & Islam, 2017), and limited photosynthate production and nutrient remobilization. Song et al (2015) reported a significant decline in grain‐filling rate in heat‐stressed (32/22°C) wheat. In wheat, heat stress affects grain filling by reducing grain size and thousand‐grain weight, and thus grain quality (Zhang et al, 2017).…”

Section: Heat Stress Effects On Grain Developmentmentioning

confidence: 99%

Heat stress effects on the reproductive physiology and yield of wheat

Ullah

Nadeem²,

Nawaz³

et al. 2021

J Agronomy Crop Science

105

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Climate change is adversely affecting wheat yields as the associated rising temperatures damage its reproductive physiology. Heat stress affects wheat at various stages of growth, but flowering and reproductive phases are the most sensitive to high temperatures as flower opening usually occurs in cooler environments. Heat stress at meiosis causes ovule and pollen sterility along with anther dehiscence. During pollen development, temperatures >30°C cause pollen abortion. At anthesis, heat stress limits resource translocation to developing grain, resulting in small grain and low yields. During grain development, heat stress shortens the grain-filling duration and decreases starch and protein accumulation due to reduced activity of grain biosynthesis enzymes and impaired flag leaf assimilatory efficiency and stem reserve mobilization. The development of heat-tolerant wheat genotypes through screening, selection and breeding using genetic engineering, exogenous application of osmoprotectants and agronomic approaches is a high priority. This review discusses the impact of heat stress on flower development and fertilization, grain development and reproductive failure in wheat and outlines strategies (i.e. breeding and selection, genetic engineering, molecular breeding and management) to improve heat tolerance in wheat.

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“…High temperatures of 20 to 23 • C at night reduced the grain-filling period by 3 to 7 days [76]. There has recently been a critical decrease in the rate of grain filling in wheat cultivars when the day/night temperature is 32/22 • C compared to 25/15 • C [77]. High temperatures of 31/20 • C during the day and night can cause changes in the aleurone layer and endosperm structures [78].…”

Section: Starch and High Night Temperature During Anthesis And Grain Filling Stagementioning

confidence: 99%

Understanding Wheat Starch Metabolism in Properties, Environmental Stress Condition, and Molecular Approaches for Value-Added Utilization

Kim

2021

Plants

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Wheat starch is one of the most important components in wheat grain and is extensively used as the main source in bread, noodles, and cookies. The wheat endosperm is composed of about 70% starch, so differences in the quality and quantity of starch affect the flour processing characteristics. Investigations on starch composition, structure, morphology, molecular markers, and transformations are providing new and efficient techniques that can improve the quality of bread wheat. Additionally, wheat starch composition and quality are varied due to genetics and environmental factors. Starch is more sensitive to heat and drought stress compared to storage proteins. These stresses also have a great influence on the grain filling period and anthesis, and, consequently, a negative effect on starch synthesis. Sucrose metabolizing and starch synthesis enzymes are suppressed under heat and drought stress during the grain filling period. Therefore, it is important to illustrate starch and sucrose mechanisms during plant responses in the grain filling period. In recent years, most of these quality traits have been investigated through genetic modification studies. This is an attractive approach to improve functional properties in wheat starch. The new information collected from hybrid and transgenic plants is expected to help develop novel starch for understanding wheat starch biosynthesis and commercial use. Wheat transformation research using plant genetic engineering technology is the main purpose of continuously controlling and analyzing the properties of wheat starch. The aim of this paper is to review the structure, biosynthesis mechanism, quality, and response to heat and drought stress of wheat starch. Additionally, molecular markers and transformation studies are reviewed to elucidate starch quality in wheat.

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Effect of timing of heat stress during grain filling in two wheat varieties under moderate and very high temperature

Cited by 15 publications

References 18 publications

Heat stress effects and management in wheat. A review

Heat stress effects and management in wheat. A review

Heat stress effects on the reproductive physiology and yield of wheat

Understanding Wheat Starch Metabolism in Properties, Environmental Stress Condition, and Molecular Approaches for Value-Added Utilization

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