Heat stress in wheat (Triticum aestivum L.): Effects on grain growth and quality traits

Spiertz, J.H.J.; Hamer, R.J.; Xu, Haifeng; Primo‐Martín, C.; Don, Clyde; Putten, P.E.L. van der

doi:10.1016/j.eja.2006.04.012

Cited by 144 publications

(108 citation statements)

References 24 publications

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“…Após a análise e a avaliação de cada plântula, o software SVIS ® forneceu os valores para os índices de vigor (IV), crescimento (IC), uniformidade de crescimento de plântulas (IUC) e comprimento de plântula (CP). Os dados dos índices de vigor e uniformidade variam de 0 a 1000 e são diretamente proporcionais ao vigor da amostra de sementes, cujos valores foram baseados na rapidez e uniformidade de desenvolvimento das plântulas da amostra, que foram estabelecidos na programação do software (HOFFMASTER et al, 2003 germinação e o estabelecimento de plântulas são mais sensíveis a altas temperaturas (SPIERTZ et al, 2006). O atraso no crescimento das plântulas, avaliado por meio do SVIS ® , pode ser devido à termoinibição das sementes, provocada em altas temperaturas, durante as primeiras 48 horas da germinação.…”

Section: Introductionunclassified

Temperatura inicial de germinação no desempenho de plântulas e mudas de tomate

et al. 2013

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RESUMO A produção de mudas é uma das etapas fundamentais para o cultivo do tomateiro e pode ser infl uenciada pela ABSTRACTSeedling production is an important step for the tomato production and can be infl uenced by the initial temperature of germination. The aim of this study was to evaluate the effect of this factor in the tomato germination and seedling growth. It was used four seed lots which were tested for germination, accelerated aging and electrical conductivity to evaluate the physiological potential. After lots characterization, seeds were exposed to initial germination temperatures (20-30, 30, 33 and 35°C)

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Section: Introductionunclassified

Temperatura inicial de germinação no desempenho de plântulas e mudas de tomate

et al. 2013

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“…Elevated temperature lengthened the duration of grain filling with reduction in kernel growth leading to losses in kernel density and weight by up to 7% in spring wheat (Guilioni et al, 2003). Similar reductions occurred in starch, and grain quality in other cereals under heat stress (Maestri et al, 2002), Spiertz et al (2006) and Hakim et al (2012) found that high temperature followed by drought (soil moisture deficit) affected all stages of wheat and barley cultivars from germination through to reproduction of crop when sown late resulting in drastic reduction in yield. Reinhardt et al (2013) reported that high temperatures (30°C) at flowering resulted in a significantly reduced number of kernels and kernel yield per plant.…”

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confidence: 76%

Physiological and Biochemical Responses to Heat Stress on Barley Seedlings and Their Impact on Growth and Yield

2016

Egypt. J. Bot.

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HE PRESENT study was carried out to investigate the effect of two … temperature degrees (30&40°C) on physiological and biochemical aspects of barley seedlings and their impact on growth and yield. Plant height, number of tillers, fresh weight, dry weight, flag leaf area were generally reduced following exposure to heat stress ranging between 2 and 8 hours., while relative water content was increased indicating attempts by plant to resist temperature elevation. The contents of chlorophyll a and chlorophyll b decreased significantly in leaves exposed to all treatments of heat stress while carotenoids decreased as the stress duration was prolonged. Correlation was evident between growth, some yield parameters (peduncle length, biological yield, spike length, number of spike per plant, kernels weight) and yield index. Changes in SDS protein profiles indicated the occurrence of a number of biochemical responses; some of them were positively associated with heat stress, while the others were negatively associated with heat stress.

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“…Treatment of wheat plants with an ethylene receptor inhibitor alleviates the effect of heat stress, suggesting that ethylene plays a role in inducing kernel abortion in wheat (Hays et al 2007). Genetic variability for heat tolerance has been identified in maize, wheat and rice (Maestri et al 2002;Prasad et al 2006;Spiertz et al 2006). In wheat, QTL for yield stability at the early grain-filling stage and grain-filling duration were mapped, and QTL for pollen heat tolerance were identified in maize (Frova and Sari-Gorla 1994;Yang et al 2002b;Mason et al 2010).…”

Section: Heat Stressmentioning

confidence: 99%

Yield stability for cereals in a changing climate

Powell

Ravash

et al. 2012

Functional Plant Biol.

131

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Abstract. The United Nations Food and Agriculture Organisation (FAO) forecasts a 34% increase in the world population by 2050. As a consequence, the productivity of important staple crops such as cereals needs to be boosted by an estimated 43%. This growth in cereal productivity will need to occur in a world with a changing climate, where more frequent weather extremes will impact on grain productivity. Improving cereal productivity will, therefore, not only be a matter of increasing yield potential of current germplasm, but also of improving yield stability through enhanced tolerance to abiotic stresses. Successful reproductive development in cereals is essential for grain productivity and environmental constraints (drought, cold, frost, heat and waterlogging) that are associated with climate change are likely to have severe effects on yield stability of cereal crops. Currently, genetic gains conferring improved abiotic stress tolerance in cereals is hampered by the lack of reliable screening methods, availability of suitable germplasm and poor knowledge about the physiological and molecular underpinnings of abiotic stress tolerance traits.

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Heat stress in wheat (Triticum aestivum L.): Effects on grain growth and quality traits

Cited by 144 publications

References 24 publications

Temperatura inicial de germinação no desempenho de plântulas e mudas de tomate

Temperatura inicial de germinação no desempenho de plântulas e mudas de tomate

Physiological and Biochemical Responses to Heat Stress on Barley Seedlings and Their Impact on Growth and Yield

Yield stability for cereals in a changing climate

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