Influence of Heat Stress on Wheat Grain Characteristics and Protein Molecular Weight Distribution

Castro, Marina; Peterson, C. J.; Rizza, Marco Dalla; Dellavalle, Paola Díaz; Vázquez, Daniel; Ibáñez, Victoria; Ross, Alan J.

doi:10.1007/1-4020-5497-1_45

Cited by 48 publications

(46 citation statements)

References 12 publications

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“…Yang et al (2002) genotypes subjected to HT of 10 C higher than the ambient (20/15 C), when stress was imposed from 10 days after anthesis until maturity. Castro et al (2007) observed smaller grains in 14 spring wheat genotypes when exposed to HT stress from 15 to 22 days after anthesis. These decreases in individual grain weights could be associated with a shortening of the cell enlargement and dry matter accumulation phase in the grain, which occurs from 16 to 37 days after anthesis (Wang and Gifford 1995).…”

Section: Discussionmentioning

confidence: 77%

Response of floret fertility and individual grain weight of wheat to high temperature stress: sensitive stages and thresholds for temperature and duration

Prasad

Djanaguiraman

2014

Functional Plant Biol.

245

208

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Abstract. Short episodes of high temperature (HT) stress during reproductive stages of crop development cause significant yield losses in wheat (Triticum aestivum L.). Wheat plants of cultivar Chinese Spring were grown at various temperature regimes at several stages of reproductive development for different durations. The objectives of this research were to (i) identify the stage(s) most sensitive to HT stress during reproductive development, and (ii) determine threshold temperature and duration of HT stress that decrease floret fertility and individual grain weight. Two periods (first at 8-6 days before anthesis and second at 2-0 days before anthesis) during reproductive development were most sensitive to short episodes (2 or 5 days) of HT stress, causing maximum decreases in floret fertility. Short episodes (5 days) of mean daily temperatures >24 C imposed at start of heading quadratically decreased floret fertility, with the values reaching close to 0% around mean daily temperature of 35 C; and floret fertility and individual grain weight decreased linearly with increasing duration (in the range from 2 to 30 days) of HT stress when imposed at start of heading or start of grain filling respectively. HT stress caused morphological abnormalities in pollen, stigma and style. The combination of lower floret fertility (leading to decreased grain numbers) and decreased individual grain weights can cause significant decreases in grain yield. Further research to search for genetic variability for these traits and use them in breeding programs to develop tolerant genotypes that can provide yield stability under current and future climates is warranted.

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Section: Discussionmentioning

confidence: 77%

Response of floret fertility and individual grain weight of wheat to high temperature stress: sensitive stages and thresholds for temperature and duration

Prasad

Djanaguiraman

2014

Functional Plant Biol.

245

208

View full text Add to dashboard Cite

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“…For instance, Castro et al (2007) observed smaller grains in 14 spring wheat genotypes regardless of duration and timing of the high temperature event. Whereas increase in temperature (from 30 to 38 • C), during reproductive phase, reduced the main stem grain weight by 20 to 44% (Tahir and Nakata, 2005).…”

Section: Grain Number and Sizementioning

confidence: 93%

Heat Stress in Wheat during Reproductive and Grain-Filling Phases

Farooq

Bramley

Palta

et al. 2011

Critical Reviews in Plant Sciences

776

570

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“…Heat stress has negative impact on growth and development of wheat according to various reports [101][102][103]. Morphological and yield traits were determined by Castro et al, Mohammadi et al, Shah and Paulsen, Viswanathan and Khanna-Chopra, Fokar et al [104][105][106][107][108]. Heat stress changed the morphology and reduced the grain size, plant height, grain growth duration, kernel number and kernel weight etc.…”

Section: Effect Of Heat Stress On Wheatmentioning

confidence: 99%

“…The impact of high temperature on characteristics of wheat grains and the protein molecular weight distribution was studied by Castro et al [104]. High temperatures compact the duration of the grain fill period.…”

Section: Effect Of Heat Stress On Wheat Morphologymentioning

confidence: 99%

Impacts of Heat Stress on Wheat: A Critical Review

Iqbal¹,

Raja²,

Yasmeen³

et al. 2017

Adv Crop Sci Tech

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A brief review is given of investigations on stress-induced alterations in the yield of different biochemical contents in wheat. Wheat is major cereal crop for fulfilling the calories demands of growing population. Alterations in the worldwide climate are predicted to have critical sentence for crop production. Abiotic stresses such as heat and drought are major abiotic stresses restraining crop production. Heat stress reduces wheat growth by upsetting various physiological and biochemical processes and the developmental stage of the plant is critical in demonstrating the vulnerability of various species and cultivars subjected to high temperature. Heat stress did not affect the protein content but there is strong correlation between leaf nitrogen content and grain protein content. Induction of HSPs seems to be the universal response and adaptation to temperature stress. The synthesis of HSPs is believed to play significant role either in preventing or minimizing the adverse effects of high temperature both at molecular and cellular levels. Wheat has the tendency to adopt diverse types of responses to temperature stress as well as a heat shock by developing thermo-tolerance for the enhancement of the grain quality and yield.

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Influence of Heat Stress on Wheat Grain Characteristics and Protein Molecular Weight Distribution

Cited by 48 publications

References 12 publications

Response of floret fertility and individual grain weight of wheat to high temperature stress: sensitive stages and thresholds for temperature and duration

Response of floret fertility and individual grain weight of wheat to high temperature stress: sensitive stages and thresholds for temperature and duration

Heat Stress in Wheat during Reproductive and Grain-Filling Phases

Impacts of Heat Stress on Wheat: A Critical Review

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