Growth and yield components of wheat genotypes exposed to high temperature stress under control environment

Rahman, M. A.; Chikushi, Jiro; Yoshida, Satoshi; Karim, A. J. M. S.

doi:10.3329/bjar.v34i3.3961

Cited by 81 publications

(60 citation statements)

References 25 publications

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“…The cellular injury is evaluated by measuring the leakage of electrolytes in order to assess the severity of existing stress (Savicka and Škute, 2010). Membrane stability is positively related to yield performance under HS stress (Rahman et al, 2009). To repair the inhibitory effects of ROS, plants make use of antioxidant defense machinery that includes enzymatic and non-enzymatic antioxidant system that is involved in the detoxification of ROS.…”

Section: Introductionmentioning

confidence: 99%

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Hussain

Ashraf

Rasheed

et al. 2016

International Agrophysics

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A b s t r a c t. The present investigation was conducted to appraise the physiochemical adjustments in contrasting maize cultivars, namely, PakAfgoi (tolerant) and EV-5098 (sensitive) subjected to heat shock. Seven-day-old seedlings were exposed to heat shock for different time intervals (1, 3, 6, 24, 48 and 72 h) and data for various physiochemical attributes determined to appraise time course changes in maize. After 72 h of heat shock, the plants were grown under normal conditions for 5 d and data for different growth attributes and photosynthetic pigments recorded. Exposure to heat shock reduced growth and photosynthetic pigments in maize cultivars. The plants exposed to heat shock for up to 3 h recovered growth and photosynthetic pigments when stress was relieved. A time course rise in the relative membrane permeability, hydrogen peroxide (H 2 O 2 ) and malondialdehyde contents was recorded particularly in the EV-5098 indicating that heat shock-induced oxidative stress. Activities of different enzymatic antioxidants greatly altered due to heat shock. For instance, an increase in superoxide dismutase activity was recorded in both maize cultivars. The activity of ascorbate peroxidase was greater in Pak-Afgoi. However, the peroxidase and catalase activities were higher in plants of . Heat shock caused a significant rise in the proline and decline in the total free amino acids. Overall, the performance of Pak-Afgoi was better in terms of having lesser oxidative damage and greater cellular levels of proline. The results suggested that oxidative stress indicators (relative membrane permeability, H 2 O 2 and malondialdehyde) and proline can be used as markers for heat shock tolerant plants.

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Section: Introductionmentioning

confidence: 99%

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Hussain

Ashraf

Rasheed

et al. 2016

International Agrophysics

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“…Elevated temperature induces pollen sterility and seed abortion, resulting in lower seed weight, and also significantly affects flour yield and dough quality (Hays et al 2007;Altenbach 2012). High temperature accelerates flowering and grain maturity, which is paralleled by reduced crop height, leaf growth and number of tillers per plant (Rahman et al 2009;Zhang et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Heat stress response of wheat cultivars with different ecological adaptation

Bányai

Karsaï

Balla

et al. 2014

Cereal Research Communications

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In the present study, heat treatment was carried out in five different phenological phases, from the first node detectable (DEV31) growth stage to 20 days after flowering, on four wheat genotypes with very different adaptation strategies. They were grown in a controlled environment in a phytotron chamber and exposed to a night temperature of 20ºC and a day temperature of either 30ºC, at DEV31, or 35ºC at all the later developmental phases, for an interval of 14 days. Plant height, leaf number, number of tillers, grain number and grain weight per main and side spikes, TKW per main and side spikes, length of the main and side spikes, and spikelet number per main and side spikes were recorded. High temperature enhanced the stem growth intensity, plant height and tiller number. In contrast, the length of side spikes, spikelet no./side spike, grain no./main and side spike, grain weight/main and side spike and TKW/main and side spike were significantly decreased. The stress response depended strongly on the developmental phase in which the heat stress was applied. Fleischmann 481 and Soissons showed definitely contrasting tendencies both in grain number and grain weight. In the case of the Plainsman V and Mv Magma pair, the higher heat stress tolerance of Magma compared to Plainsman V was evident also from the grain number and weight of the main spike at each developmental phase.

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“…However, water use efficiency was highest when less irrigation was applied. Poor performance of these growth parameters in elevated temperature may be due to enhanced leaf senescence and growth retardation (Rehman et al, 2009) during growth phase, while it was recorded that as water plays its substantial role in cell division and elongation, ultimately in growth so restricted cell division and expansion (Alves and Setter, 2004) and more rate of leaf senescence (Hafsi et al, 2000) was reported due to water stress ( Table 2). The significantly different periodic trend regarding LAI, LAD and CGR under temperature regimes and irrigation levels is also elaborated in pictorial representation (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Among the abiotic stresses, heat stress is one of the major abiotic stress which results in linear yield decline in many crops (Hays et al, 2007). Heat stress negatively influences the plant growth and development resulting in reduced plant leaf area, less growth, early leaf senescence, less number of productive tillers per plant (Rehman et al, 2009), abnormal embryo formation (Saini et al, 2010), pollen mortality, (Saini et al, 2010), grain abortion (Hays et al, 2007), reduced grain weight and grain number per spike (Schapendonk et al, 2007), resulting in lower crop yield. Like heat, drought is also one of the main factors limiting the productivity of many crops across the globe (Xing et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Impact of Various Irrigation Levels on Growth, Yield and Water Use Efficiency of Wheat at Variable Temperatures

Asad¹,

Ahmad²,

Khaliq³

et al. 2014

JGIASS

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to check the influence of various irrigation regimes on growth, yield and water use efficiency of wheat at variable temperatures. The treatments were comprised of three irrigation levels: I 1 = (irrigation at tillering, stem elongation, booting and grain development), I 2 = (irrigation at tillering, stem elongation and grain development) and I 3 = (irrigation at tillering and grain development) and two temperature levels viz. existing field temperature and an elevated temperature of 4°C above the existing temperature in controlled conditions. The experiment was laid out in Randomized Complete Block Design (RCBD) in split plot arrangement with four replications with a net plot size of 1.32 m × 5 m. The results showed that the growth, yield and water use efficiency was significantly affected by various irrigation regimes and temperature variables. Growth and yield related traits were significantly higher when irrigation was applied at tillering, stem elongation, booting and grain development followed by I 2 (Irrigation at tillering, stem elongation and grain development). Similarly, growth, yield and water use efficiency was highest under normal existing field conditions. Among irrigation levels, water use efficiency and NAR was highest when only two irrigations at tillering and grain development were applied. In conclusion, at the face of declining water availability and in water deficient areas, water application may be done at tillering and grain development stage for achieving better Water Use Efficiency (WUE). However in water sufficient areas, water application at tillering, stem elongation, booting and grain development is recommended to achieve higher yields. Similarly, current climate change scenario resulting in temperature elevation will severely affects wheat yields.

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Growth and yield components of wheat genotypes exposed to high temperature stress under control environment

Cited by 81 publications

References 25 publications

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Heat stress response of wheat cultivars with different ecological adaptation

Impact of Various Irrigation Levels on Growth, Yield and Water Use Efficiency of Wheat at Variable Temperatures

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