气候变化领域集成服务门户(CCPortal): Effectiveness of heat tolerance rice cultivars in preserving grain appearance quality under high temperatures in Japan

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DOI	10.1016/j.fcr.2024.109303
	Effectiveness of heat tolerance rice cultivars in preserving grain appearance quality under high temperatures in Japan - A meta-analysis
	Wakatsuki, Hitomi; Takimoto, Takahiro; Ishigooka, Yasushi; Nishimori, Motoki; Sakata, Mototaka; Saida, Naoya; Akagi, Kosuke; Makowski, David; Hasegawa, Toshihiro
发表日期	2024
ISSN	0378-4290
EISSN	1872-6852
起始页码	310
卷号	310
英文摘要	Background: Climate change, particularly rising temperatures, negatively affects rice grain quality, increasing chalky grain percentage (CG) and hampering rice grade and price. Heat -tolerant cultivars have been bred and released since the 2000 s, but the effectiveness of heat tolerance in reducing the occurrence of CG has yet to be quantified. Objectives: This study aimed to measure the effectiveness of breeding for better heat tolerance in reducing the negative impact of high temperatures on rice quality. Methods: Through a systematic literature search, we developed a dataset including 1297 field observations covering 48 cultivars from five different heat tolerant ranks (HTRs) at 44 sites across Japan. A linear mixed -effect model (LME) and a random forest model (RF) were fitted to the data to analyze the effect of HTR and climatic factors such as the cumulative mean air temperature above 26 degrees C (TaHD), mean solar radiation, and mean relative humidity for 20 days after heading on CG. Results: The LME model explained 63% of the variation of the whole dataset with a 14% RMSE. The RF partial dependence plot revealed that the logit-transformed CG response to climate factors was linear, supporting the assumption of the LME. The statistical analysis showed that CG increased as a function of TaHD (P < 0.001), with significant differences among HTRs (P < 0.001). The strongest effect of TaHD was obtained for the lowest HTR and was found to decrease with increasing HTR. CG also increased with higher relative humidity (P < 0.001) and solar radiation (P < 0.01). Based on our modeling, we estimated that as TaHD increased from 20 to 80 degrees Cd (equivalent to a mean temperature increase from 27 degrees C to 30 degrees C), CG increased by 66% points (difference in CG) for cultivars with the lowest HTR, 45% points for cultivars with an intermediate HTR, and 19% points for cultivars with the highest HTR. Raising HTR by just one step (from intermediate to moderately tolerant) is projected to increase the proportion of first -grade rice at a grain -filling temperature of 27 degrees C, but tolerance levels need to be improved further in case of stronger warming. Conclusions: The effect of high temperatures on CG was highly dependent on the cultivar ' s HTR. Improvements in HTR effectively reduce the negative impacts of high temperatures on rice grain quality. Significance: Heat -tolerant cultivars are projected to suppress the prevalence of CG more than threefold compared with heat -sensitive cultivars when grain -filling temperature increases from 27 to 30 degrees C.
英文关键词	Climate change adaptation; Chalky grain; High -temperature; Oryza sativa; Systematic literature search
语种	英语
WOS研究方向	Agriculture
WOS类目	Agronomy
WOS记录号	WOS:001225601200001
来源期刊	FIELD CROPS RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288991
作者单位	National Agriculture & Food Research Organization - Japan; National Agriculture & Food Research Organization - Japan; INRAE; Universite Paris Cite; Universite Paris Saclay; AgroParisTech; National Agriculture & Food Research Organization - Japan
推荐引用方式 GB/T 7714	Wakatsuki, Hitomi,Takimoto, Takahiro,Ishigooka, Yasushi,et al. Effectiveness of heat tolerance rice cultivars in preserving grain appearance quality under high temperatures in Japan - A meta-analysis[J],2024,310.
APA	Wakatsuki, Hitomi.,Takimoto, Takahiro.,Ishigooka, Yasushi.,Nishimori, Motoki.,Sakata, Mototaka.,...&Hasegawa, Toshihiro.(2024).Effectiveness of heat tolerance rice cultivars in preserving grain appearance quality under high temperatures in Japan - A meta-analysis.FIELD CROPS RESEARCH,310.
MLA	Wakatsuki, Hitomi,et al."Effectiveness of heat tolerance rice cultivars in preserving grain appearance quality under high temperatures in Japan - A meta-analysis".FIELD CROPS RESEARCH 310(2024).