Variation in time of day of anthesis in rice in different climatic environments

Julia, Cécile; Dingkuhn, Michaël

doi:10.1016/j.eja.2012.06.007

Cited by 72 publications

(51 citation statements)

References 23 publications

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“…Research on heat induced sterility in the last decades has shown that rice has two natural mechanisms to avoid heat sterility (Julia & Dingkuhn, , ; Matsui, Kobayasi, Yoshimoto, & Hasegawa, ; Van Oort et al., ; Van Oort, De Vries et al., ). Firstly, transpirational cooling of the spikelets increases at higher temperatures and higher vapour pressure deficit and is therefore especially large in hot semiarid environments, where spikelet – air temperature differences as high as 12°C have been reported (Julia & Dingkuhn, ).…”

Section: Methodsmentioning

confidence: 99%

“…Firstly, transpirational cooling of the spikelets increases at higher temperatures and higher vapour pressure deficit and is therefore especially large in hot semiarid environments, where spikelet – air temperature differences as high as 12°C have been reported (Julia & Dingkuhn, ). Secondly, in hotter climates rice flowers open earlier in the morning, when temperatures are still lower, thus avoiding the hottest part of the day (Julia & Dingkuhn, ). (Van Oort, De Vries et al., ) showed that the heat sterility submodel in ORYZA2000 (Bouman et al., ) which does not account for these two mechanisms, grossly overestimates heat sterility in hot semiarid irrigated systems in Senegal.…”

Section: Methodsmentioning

confidence: 99%

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Impacts of climate change on rice production in Africa and causes of simulated yield changes

Oort

Zwart

2017

Global Change Biology

208

101

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This study is the first of its kind to quantify possible effects of climate change on rice production in Africa. We simulated impacts on rice in irrigated systems (dry season and wet season) and rainfed systems (upland and lowland). We simulated the use of rice varieties with a higher temperature sum as adaptation option. We simulated rice yields for 4 RCP climate change scenarios and identified causes of yield declines. Without adaptation, shortening of the growing period due to higher temperatures had a negative impact on yields (−24% in RCP 8.5 in 2070 compared with the baseline year 2000). With varieties that have a high temperature sum, the length of the growing period would remain the same as under the baseline conditions. With this adaptation option rainfed rice yields would increase slightly (+8%) but they remain subject to water availability constraints. Irrigated rice yields in East Africa would increase (+25%) due to more favourable temperatures and due to CO2 fertilization. Wet season irrigated rice yields in West Africa were projected to change by −21% or +7% (without/with adaptation). Without adaptation irrigated rice yields in West Africa in the dry season would decrease by −45% with adaptation they would decrease significantly less (−15%). The main cause of this decline was reduced photosynthesis at extremely high temperatures. Simulated heat sterility hardly increased and was not found a major cause for yield decline. The implications for these findings are as follows. For East Africa to benefit from climate change, improved water and nutrient management will be needed to benefit fully from the more favourable temperatures and increased CO2 concentrations. For West Africa, more research is needed on photosynthesis processes at extreme temperatures and on adaptation options such as shifting sowing dates.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Impacts of climate change on rice production in Africa and causes of simulated yield changes

Oort

Zwart

2017

Global Change Biology

208

101

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“…E-[CO 2 ] significantly advanced 10%FOT and 50%FOT by 4 and 5 min at the 10% and 5% levels of significance, respectively ( (Jagadish et al, 2007(Jagadish et al, , 2008Julia & Dingkuhn, 2012van Oort et al, 2014), R s , VPD , wind speed (Tsuboi, 1961), atmospheric pressure, and rainfall (Hoshikawa, 1989). In this experiment, we have demonstrated that [CO 2 ] is another meteorological factor affecting FOT.…”

Section: Discussionmentioning

confidence: 99%

“…Opening of flowers in many species, including rice, occurs in the morning, correlated with an increase in temperature and light intensity and with a decrease in ambient humidity (van Doorn & van Meeteren, 2003). In rice, many meteorological factors, including T a (Jagadish et al, 2007(Jagadish et al, , 2008Julia & Dingkuhn, 2012Kobayasi et al, 2009;van Oort et al, 2014) and solar radiation , affect FOT.…”

Section: Introductionmentioning

confidence: 99%

“…Rice plants exhibit phenotypic plasticity in FOT in response to environmental factors such as T a , and therefore prediction of FOT is important when estimating the effects of heat-induced sterility in rice (Julia & Dingkuhn, 2012Nguyen et al, 2014;van Oort et al, 2014) and also when evaluating the effectiveness of early-morning flowering cultivars, such as those developed by Ishimaru et al (2010), Ishimaru et al, (2012), andHirabayashi et al (2015). By taking into account the transpirational cooling as well as FOT, van Oort et al (2014) obtained a better estimation of fertility under heat stress conditions.…”

Section: Introductionmentioning

confidence: 99%

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Effects of free-air CO₂ enrichment on flower opening time in rice

Kobayasi

Sakai

Tokida

et al. 2019

Plant Production Science

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Flower opening time (FOT) is important for reproductive success in higher plants. Rice plants exhibit phenotypic plasticity in FOT in response to environmental factors such as temperature. However, the effect of the concentration of atmospheric CO 2 ([CO 2 ]) on FOT has not yet been reported. Elevated [CO 2 ] (E-[CO 2 ]) increases the temperature of panicles, which may in turn advance FOT. We investigated the effect of E-[CO 2 ] on FOT in rice using a free-air CO 2 enrichment facility where we increased [CO 2 ] by about 200 μmol mol −1 above the ambient level (A-[CO 2 ]). By photographing panicles at 10-min intervals, we determined 10%FOT and 50%FOT (the time of the day in Japan Standard Time when 10% and 50% of the flowers had opened, respectively). E-[CO 2 ] advanced 10%FOT and 50%FOT by 4 and 5 min at the 10% and 5% levels of significance, respectively. Daily mean air temperature (T a ), solar radiation, and vapor-pressure deficit were negatively correlated with 50%FOT. Regression line slopes for T a versus 10%FOT and 50%FOT were slightly steeper for A-[CO 2 ] than those for E-[CO 2 ]. Our results suggest that the most probable reason why E-[CO 2 ] advanced FOT is an increase in panicle temperature arising from a reduction in leaf stomatal conductance. Abbreviations: 10%FOT: the time of the day in Japan Standard Time when 10% of the flowers had opened; 50%FOT: the time of the day in Japan Standard Time when 50% of the flowers had opened; A-[CO2]: ambient CO2; [CO2]: the concentration of atmospheric carbon dioxide; E-[CO2]

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Jasmonates alleviate spikelet‐opening impairment caused by high temperature stress during anthesis of photo‐thermo‐sensitive genic male sterile rice lines

Yang

Fei

Chen

et al. 2020

Food and Energy Security

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Variation in time of day of anthesis in rice in different climatic environments

Cited by 72 publications

References 23 publications

Impacts of climate change on rice production in Africa and causes of simulated yield changes

Impacts of climate change on rice production in Africa and causes of simulated yield changes

Effects of free-air CO₂ enrichment on flower opening time in rice

Jasmonates alleviate spikelet‐opening impairment caused by high temperature stress during anthesis of photo‐thermo‐sensitive genic male sterile rice lines

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Variation in time of day of anthesis in rice in different climatic environments

Cited by 72 publications

References 23 publications

Impacts of climate change on rice production in Africa and causes of simulated yield changes

Impacts of climate change on rice production in Africa and causes of simulated yield changes

Effects of free-air CO2 enrichment on flower opening time in rice

Jasmonates alleviate spikelet‐opening impairment caused by high temperature stress during anthesis of photo‐thermo‐sensitive genic male sterile rice lines

Contact Info

Product

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Effects of free-air CO₂ enrichment on flower opening time in rice