Post-Heading Heat Stress in Rice of South China during 1981-2010

Shi, Peihua; Tang, Liang; Wang, Lihuan; Sun, Ting; Liu, Leilei; Cao, Weixing; Zhu, Yan

doi:10.1371/journal.pone.0130642

Cited by 43 publications

(18 citation statements)

References 44 publications

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“…Nevertheless, there are still some uncertainties and limitations. Such imperfects might be caused by: (1) Inability to estimate future changes in agronomic management such as sowing and cultivars because it is hard to predict exactly what farmers will do and to what extent crop breeding can overcome extreme temperature impacts in the future (Jiao et al, 2004;Yu et al, 2012;Liu et al, 2013;Zhang et al, 2013;Shi et al, 2015).…”

Section: Uncertainties and Limitations Of This Studymentioning

confidence: 99%

Future extreme temperature and its impact on rice yield in China

Zhang

Chen

Wang

et al. 2017

Intl Journal of Climatology

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Rice in China is increasingly suffered from extreme temperature stress (ETS) with ongoing climate change. It is projected that ETS would increase notably across the world in the future. However, the spatio-temporal change of ETS in main rice planting areas in China is still unclear; and the future yield loss caused by ETS (YL ETS ) has seldom been investigated quantitatively. In this study, we first investigated the spatio-temporal change of ETS across China under 20 climate change scenarios consisting of five global climate models and four Representative Carbon Pathways (2.6, 4.5, 6.0, and 8.5). Then, using a process-based crop model (MCWLA-Rice), its 30 sets of model parameters and the 20 climate change scenarios, we conducted a super-ensemble assessment to investigate the YL ETS over 2020-2049, relative to the baseline period , across China. The results showed that, an increased heat ETS and a decreased cold ETS would be expected for most areas. As a result, a large spatial variability of yield loss would be expected in the future, including severely cold stress for region I (northeastern China, single rice) and region IV (southern China, early rice), but severely heat stress for region III (the middle and lower reaches of Yangtze River, single rice) and region IV (southern China, late rice). Comparing yield loss from both ETS, a decreased change in yield loss would be mainly expected in region I (northeastern China, single rice), while an increased change for region III (the middle and lower reaches of Yangtze River, single rice) and IV (southern China, late rice), with less change for region II (southwestern China, single rice) and IV (southern China, early rice). Finally, some adaptation measures were proposed for the ETS-sensitive areas. Our findings are useful to develop effective policies to cope with climate risk and relieve ETS disasters.

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Section: Uncertainties and Limitations Of This Studymentioning

confidence: 99%

Future extreme temperature and its impact on rice yield in China

Zhang

Chen

Wang

et al. 2017

Intl Journal of Climatology

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“…Accumulated heat degree days till flowering (AHDD), experienced by each genotype in all treatments were calculated by base temperature cut-off of 10°C method (d'Alpoim Guedes et al 2015;Shi et al 2015a). Spikelet fertility was calculated as the ratio of partially and fully filled spikelets to total number of spikelets per panicle.…”

Section: Late Sown Methods During Dry Season 2013mentioning

confidence: 99%

Field level evaluation of rice introgression lines for heat tolerance and validation of markers linked to spikelet fertility

Prasanth

Basava

Babu

et al. 2016

Physiol Mol Biol Plants

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Rice lines derived from wild species and mutants can serve as a good resource for favorable alleles for heat tolerance. In all, 48 stable lines including 17 KMR3/O. rufipogon introgression lines (KMR3 ILs), 15 Swarna/O. nivara ILs (Swarna ILs) along with their parents, Nagina 22 (N22) and its 4 EMS induced mutants and 7 varieties were evaluated for heat tolerance under irrigated conditions under field in two seasons, wet season 2012 using poly cover house method and dry season 2013 using late sown method. Spikelet fertility (SF), yield per plant (YP) and heat susceptibility index (HSI) for these two traits were considered as criteria to assess heat tolerance compared to control. Four KMR3 ILs and eight Swarna ILs were identified as heat tolerant based on SF and YP and their HSIs in both wet and dry seasons. S-65 and S-70 showed low SF and high YP consistently in response to heat in both seasons. We provide evidence that SF alone may not be the best criterion to assess heat tolerance and including YP is important as lines with low SF but high YP and vice versa were identified under heat stress. Out of 49 SSR markers linked to spikelet fertility, 18 were validated for five traits. RM229 in wet season and RM430 and RM210 in dry season were significantly associated with both SF and its HSI under heat stress. RM430 was also significantly associated with both YP and its HSI in dry season. Thirty two candidate genes were identified close to nine markers associated with traits under heat stress.

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“…It has been reported that about 0.5 million hectares of rice were damaged by heat stress in Hubei Province in 2003 . Shi et al . pointed out that rice production decreased particularly due to the high temperature during post‐heading stage in this region from 1981 to 2010.…”

Section: Introductionmentioning

confidence: 99%

Improvement and stabilization of rice production by delaying sowing date in irrigated rice system in central China

Jiang

Liu

et al. 2019

J Sci Food Agric

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BACKGROUND Climate change has posed great challenges to rice production. Temperature and solar radiation show significant variations in central China. This study aims to analyze the responses of different rice genotypes to the variations of temperature and solar radiation in central China, and to find the way of identifying the optimal sowing date to improve and stabilize rice production. For this end, four rice genotypes (two Indica and two Japonica cultivars) were cultivated at two locations under irrigation conditions in 2 years with six sowing dates. RESULTS We investigated variations of rice grain yield, resource use efficiency, average daily temperature and solar radiation during different phenological stages. Rice grain yield could increase by about 2–17% in central China. Compared with solar radiation, temperature was a more important factor affecting rice grain yield in central China. The grain yield showed great correlation with the means temperature during different phenological stages, especially during the first 20 days after heading (GT20). Besides our results demonstrated that the grain yield displayed slender variations when the GT20 was within 24.9–26.4 °C. However, GT20 was higher than 26.4 °C in most cases, which became more frequent due to climate changes. Analysis of climate change during the last 25 years revealed that the frequency of GT20 within 24.9–26.4 °C was increased by the delay of sowing date. CONCLUSION We propose that delaying sowing date to achieve the optimal GT20 (24.9 °C–26.4 °C) can be an effective strategy to stabilize and improve rice grain yield and resource use efficiency in central China. © 2019 Society of Chemical Industry

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Post-Heading Heat Stress in Rice of South China during 1981-2010

Cited by 43 publications

References 44 publications

Future extreme temperature and its impact on rice yield in China

Future extreme temperature and its impact on rice yield in China

Field level evaluation of rice introgression lines for heat tolerance and validation of markers linked to spikelet fertility

Improvement and stabilization of rice production by delaying sowing date in irrigated rice system in central China

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