Screening for heat tolerance in spring wheat (Triticum aestivum l.)

Khan, A. A.; Shamsuddin, A. K. M.; Barma, N. C. D.; Alam, MJ; Alam, M. S.

doi:10.4038/tare.v17i1.5295

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…As a result, higher soil temperatures served as a source of additional variation in CTD measurements. Numerous studies carried out in various countries have established diversity among wheat genotypes in Canopy temperature depression (Balota et al, 2007;Karimizadeh and Mohammadi, 2011;Khan et al, 2014;Ray and Ahmed, 2015;Jangid and Srivastava, 2018). The significant and positive correlation of CTD with five drought tolerance indices and yield of durum wheat in the rainfed and supplementary irrigation conditions was established (Karimizadeh and Mohammadi, 2011).…”

Section: Discussionmentioning

confidence: 99%

Association of canopy temperature depression with yield and morphological traits of spring soft wheat under Siberian conditions

Лепехов¹,

Khlebova²

2019

Ukr J Ecol

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The method of infrared thermometry is widely used in the world to diagnose drought tolerance of crops. However, in Russia the measurement of Canopy temperature depression (CTD) has not yet been carried out. The aim of the study was to measure CTD and consider the possibility of using this trait to assess spring soft wheat varieties when growing in the Altai Territory (South-Western Siberia of Russia). The studies were conducted in 2017 and 2018 using 36 varieties of spring soft wheat in the vegetative stage and 14 varieties in the grain filling stage, respectively. Significant differences between the varieties for CTD values in both years of the study were established. There was no reliable correlation between CTD and most of agronomic traits of the studied genotypes. CTD also did not significantly correlate with grain yields in neither 2017 nor 2018 (r=0.31; r=-0.14, respectively). However, we found a reliable correlation of the trait with the plant height in 2018 (r=0.83). This may explain the wide distribution of tall varieties in Siberia. If drought occurs before heading, when the plants are oppressed and do not close the canopy, the use of infrared thermometry is difficult throughout the growing season, since the measurement error increases significantly. In Siberia, this method is suitable only in the conditions of mild droughts or when using the steam precursor in wheat cultivation.

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Section: Discussionmentioning

confidence: 99%

Association of canopy temperature depression with yield and morphological traits of spring soft wheat under Siberian conditions

Лепехов¹,

Khlebova²

2019

Ukr J Ecol

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“…Yield and yield‐contributing phenological and physiological characteristics differ among wheat genotypes. Heat stress affects grain‐filling duration, ground cover, canopy temperature at grain filling and biomass development, resulting in low grain yields (Khan et al, 2015). In future wheat breeding programmes, these characteristics could be used as breeding criteria to improve terminal heat tolerance (Table 2).…”

Section: Strategies To Improve Heat Stress Tolerancementioning

confidence: 99%

Heat stress effects on the reproductive physiology and yield of wheat

Ullah

Nadeem²,

Nawaz³

et al. 2021

J Agronomy Crop Science

109

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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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“…Heat stress leads to different anatomical, morphological, biochemical and physiological changes in wheat, influencing grain yield and quality ( Barnabas et al, 2008). It has a complex effect on the photosynthetic activity of wheat plants (Liu,2017;Djanaguiraman, 2018) as it is one of the chief metabolic processes that affect grain yield (Ristic et al, 2007), so net photosynthetic activity and chlorophyll content are important parameters for the modification of wheat to heat stress and other abiotic stress factors (Khan et al, 2014). In addition, there is a decrease in net photosynthetic rate due to the changes in the light-dependent and dark reactions (Ashraf and Harris, 2013).…”

Section: Introductionmentioning

confidence: 99%

Correlation between physiological and yield attributes in bread wheat genotypes for high temperature tolerance

Goyal,

Munjal,

Rani

et al. 2023

JEB

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Aim: The aim of the present study was to observe the role of heat stress in the correlation of physiological and yield attributes in bread wheat genotypes. Methodology: Seven wheat genotypes (PBW781, RWP-2018-30, PBW821, RWP-2018-31, WH1239, RWP-2018-26, and RWP-2018-32) along with three check varities namely DBW14, WH730, and RAJ3765 were grown under timely sown (TS) and late sown (LS) conditions in the field research area of Wheat Section, CCS HAU, Hisar (2018-19). For generating heat stress, delay in sowing (4 weeks) was done in late sown from timely sown. These wheat lines were assessed for several physiological and yield attributes under both conditions and one genotype was found to be heat-tolerant under late sown condition. Results: PBW821 was classified as thermo-tolerant due to maximum grain yield, higher normalized difference vegetation index, photosynthetic rate, chlorophyll content, and lower canopy temperature compared to other varieties under late sown conditions. Interpretation: Identification of a heat-resistant wheat genotype would be a valuable resource for developing high-yielding cultivars under high-temperature conditions, and these findings might also be used in breeding programs. Key words: Grain yield, Heat tolerance, Physiological traits, Triticum aestivum

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Screening for heat tolerance in spring wheat (Triticum aestivum l.)

Cited by 10 publications

References 24 publications

Association of canopy temperature depression with yield and morphological traits of spring soft wheat under Siberian conditions

Association of canopy temperature depression with yield and morphological traits of spring soft wheat under Siberian conditions

Heat stress effects on the reproductive physiology and yield of wheat

Correlation between physiological and yield attributes in bread wheat genotypes for high temperature tolerance

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