干旱区生态环境知识资源中心(Arid): Simulating drought tolerance of peanut varieties by maintaining photosynthesis under water deficit

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DOI	10.1016/j.fcr.2022.108650
	Simulating drought tolerance of peanut varieties by maintaining photosynthesis under water deficit
	Zhen, Xiaoxing; Zhang, Qiong; Sanz-Saez, Alvaro; Chen, Charles Y.; Dang, Phat M.; Batchelor, William D.
通讯作者	Batchelor, WD
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2022
卷号	287
英文摘要	Over two-third of global peanuts are grown mainly in seasonally rainfed regions across arid and semi-arid zones where drought is a major yield limiting factor. Breeders are targeting drought adaptive traits by selecting high yielding genotypes under water-limited environments. Recently, several peanut varieties have been developed that exhibit drought tolerant characteristics. Crop models can be used to simulate the impact of these traits for different environments. The overall goal of this study was to develop an approach to simulate drought tolerant traits using the CROPGRO-Peanut model and assess the long-term yield response to these desired traits. Four peanut varieties and one advanced breeding line variety with varying degrees of drought tolerance response were grown under both field and rainout shelter conditions in 2019 and 2020. The trait of maintaining photosynthesis under water deficit was observed in the rainout shelter experiments and incorporated into the crop model as a new drought tolerance cultivar coefficient. The evaluation results with independent data showed that the modified model simulated peanut growth and yield under water-limited conditions reasonably well. The rainfed yield, seasonal evapotranspiration (ET), and grain water use efficiency (WUE) were simulated for both drought tolerant and baseline peanut varieties at two representative sites using weather data from 1998 to 2020. The drought tolerant mechanism of maintaining photosynthesis under water deficit was shown to be an advantageous trait for peanut varieties, which produced higher simulated rainfed yield with enhanced seasonal ET and grain WUE, especially for dry seasons. The simulated photosynthesis and yield were sensitive to values of the drought tolerant factor over an expected range of values. Further research is needed on other potential drought tolerant mechanisms, such as maintaining nitrogen fixation, pod harvest index and leaf growth under drought.
英文关键词	Arachis hypogaea L Drought tolerance Photosynthesis Yield CROPGRO-Peanut
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000863318100008
WOS关键词	ARACHIS-HYPOGAEA L. ; TRAITS ; PLANTS ; YIELD ; MODEL ; LINES ; HERITABILITY ; COEFFICIENTS ; RESISTANCE ; EFFICIENCY
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392584
推荐引用方式 GB/T 7714	Zhen, Xiaoxing,Zhang, Qiong,Sanz-Saez, Alvaro,et al. Simulating drought tolerance of peanut varieties by maintaining photosynthesis under water deficit[J],2022,287.
APA	Zhen, Xiaoxing,Zhang, Qiong,Sanz-Saez, Alvaro,Chen, Charles Y.,Dang, Phat M.,&Batchelor, William D..(2022).Simulating drought tolerance of peanut varieties by maintaining photosynthesis under water deficit.FIELD CROPS RESEARCH,287.
MLA	Zhen, Xiaoxing,et al."Simulating drought tolerance of peanut varieties by maintaining photosynthesis under water deficit".FIELD CROPS RESEARCH 287(2022).