2017
DOI: 10.1007/s00122-017-2925-1
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Abstract: Key message Exposure of wheat to high temperatures during male meiosis prevents normal meiotic progression and reduces grain number. We define a temperature-sensitive period and link heat tolerance to chromosome 5D. AbstractThis study assesses the effects of heat on meiotic progression and grain number in hexaploid wheat (Triticum aestivum L. var. Chinese Spring), defines a heat-sensitive stage and evaluates the role of chromosome 5D in heat tolerance. Plants were exposed to high temperatures (30 or 35 °C) in … Show more

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Cited by 65 publications
(56 citation statements)
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“…This is also the case for low temperatures, with meiosis I identified as the most sensitive stage (Thakur et al 2010). High temperatures during reproductive development can have a negative impact on grain yield (Fischer and Maurer 1976;Fischer 1985;Wardlaw et al 1989), and even short periods of a moderately high temperature (20-24 hours at 30°C) during meiosis can reduce grain number (Saini and Aspinall 1982;Draeger and Moore 2017). Grain yield is also reduced when low temperatures occur during the booting stage (Ji et al 2017), which broadly corresponds to meiosis (Barber et al 2015).…”
Section: Introductionmentioning
confidence: 85%
See 1 more Smart Citation
“…This is also the case for low temperatures, with meiosis I identified as the most sensitive stage (Thakur et al 2010). High temperatures during reproductive development can have a negative impact on grain yield (Fischer and Maurer 1976;Fischer 1985;Wardlaw et al 1989), and even short periods of a moderately high temperature (20-24 hours at 30°C) during meiosis can reduce grain number (Saini and Aspinall 1982;Draeger and Moore 2017). Grain yield is also reduced when low temperatures occur during the booting stage (Ji et al 2017), which broadly corresponds to meiosis (Barber et al 2015).…”
Section: Introductionmentioning
confidence: 85%
“…However, this suggestion was based on the scoring of only a few cells because exposure of the plants to high temperatures for three days made the chromosomes too sticky to score accurately. Grain number is also reduced much more in N5DT5B plants than in the wild type after exposure to 30°C during premeiosis and leptotene (Draeger and Moore 2017).…”
mentioning
confidence: 95%
“…In addition, when heat occurs at the time of flowering it can reduce the vitality of the pollen and fertilization during pollen formation (Barlow et al, 2015;Draeger & Moore, 2017). Instead, during the grain filling period, heat stress reduces grain size and its weight (Dias & Lidon, 2009).…”
Section: Traits To Be Targeted By Durum Wheat Breeders To Increase Tomentioning
confidence: 99%
“…Here, we exposed 7 days old wheat seedlings (Fielder) grown at 24°C for a short-term treatment of 34°C and harvested whole shoots at different incubation times ( Figure 1A ). Recent evidence in cereal crop plants has demonstrated a link between high temperature sensitivity at booting stage and seed yield (Hedhly et al , 2009; Draeger and Moore, 2017). Hence, we used booting wheat plants (Cadenza) grown at 21°C and exposed to increased ambient temperature (34°C), after which we harvested spikelets at different incubation times ( Figure 1B ).…”
Section: Resultsmentioning
confidence: 99%
“…During wheat vegetative development, traits affected by high temperature include plant height, specific leaf weight, leaf width, relative water content, chlorophyll content and secondary metabolites (Akter and Rafiqul Islam, 2017). Furthermore, generative wheat growth and development are also very susceptible to increased temperatures (Bennett et al , 1971; Sainiab et al , 1983; Saini et al , 1984; Draeger and Moore, 2017). Specifically, when wheat flowers are exposed to heat stress (10°C above the optimum condition) at the stage between ear initiation and anthesis (when anther development goes through meiosis) this causes abnormal development of the pollen grains in the anther and subsequently results in grain yield reduction (Sainiab et al , 1983; Saini et al , 1984; Fischer, 1985; Wardlaw et al , 1989).…”
Section: Introductionmentioning
confidence: 99%