干旱区生态环境知识资源中心(Arid): Combined Impact of Elevated CO(2)Concentration and Climatic Warming on Potato Yield and Quality in Semi-arid Regions

Arid

DOI	10.1007/s11540-020-09466-w
	Combined Impact of Elevated CO(2)Concentration and Climatic Warming on Potato Yield and Quality in Semi-arid Regions
	Yao, Yubi; Lei, Jun; Niu, Haiyang; Zhang, Xiuyun
通讯作者	Lei, J
来源期刊	POTATO RESEARCH
ISSN	0014-3065
EISSN	1871-4528
英文摘要	An experiment was performed to study the impacts of elevated CO(2)concentrations and climatic warming on potato growth during 2016. The changes in potato gas exchange parameters, yield and nutrient composition and the microelement concentrations in tubers were analysed. The results showed that potato growth was affected by warming and the elevated CO(2)concentration. The net photosynthetic rate (P-n) of potato leaves was higher in the treatments than in the control. During the late growth stage, theP(n)of the potato leaves decreased. Under an elevated CO(2)concentration, the leaf stomatal conductance (G(s)) gradually decreased to below that of the control. The leaf transpiration rate (T-r) increased and was higher under warming with elevated CO(2)concentration treatment. The water use efficiency (WUE) improved and was higher under warming conditions and elevated CO(2)concentration compared with the control group and the group with only warming. The threshold of the photosynthetic active radiation (PAR) flux density was improved in the warming and elevated CO(2)concentration treatment when photosynthetic assimilation was equivalent to respiratory consumption during potato leaf photosynthesis. Under weak light, the photosynthetic capacity of the potato leaves and the maximumP(n)were improved. In addition, the light saturation point was improved at maximum assimilation. The dark respiration rate (R-d) increased with warming, but it could be relieved by the combined impact of warming and elevated CO(2)concentration. The actual yields of the warming and elevated CO(2)concentration treatment were distinctly higher than those of the control and the treatment with only warming. The potato yield in the treatment with only warming was low, and warming did not promote the tuber growth in the semi-arid region of the Loess Plateau. Warming during the tuber expansion stage delays its growth and results in deformed tubers. Therefore, warming synchronized with elevated CO(2)concentrations will improve theP(n)and WUE of potato leaves, which could promote potato dry matter accumulation and increase potato yield.
英文关键词	Climatic change Elevated CO(2)concentration Elevated temperatures Photosynthetic characteristics of potato
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000564969300001
WOS关键词	WATER-USE EFFICIENCY ; SOLANUM-TUBEROSUM L. ; AIR CO2 ENRICHMENT ; CARBON-DIOXIDE ; STOMATAL CONDUCTANCE ; ATMOSPHERIC CO2 ; WINTER-WHEAT ; GROWTH ; PHOTOSYNTHESIS ; TEMPERATURE
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/2XILL650/328197
作者单位	[Yao, Yubi] Lanzhou Resources & Environm Voc Tech Coll, Lanzhou 730021, Peoples R China; [Yao, Yubi] China Meteorol Adm, Key Lab Arid Climate Change & Reducing Disaster G, Lanzhou Inst Arid Meteorol, Lanzhou 730020, Peoples R China; [Lei, Jun; Niu, Haiyang; Zhang, Xiuyun] Meteorol Bur Dingxi Gansu Prov, Dingxi 743000, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yubi,Lei, Jun,Niu, Haiyang,et al. Combined Impact of Elevated CO(2)Concentration and Climatic Warming on Potato Yield and Quality in Semi-arid Regions[J].
APA	Yao, Yubi,Lei, Jun,Niu, Haiyang,&Zhang, Xiuyun.
MLA	Yao, Yubi,et al."Combined Impact of Elevated CO(2)Concentration and Climatic Warming on Potato Yield and Quality in Semi-arid Regions".POTATO RESEARCH