Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat

doi:10.1016/j.cj.2017.01.001

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat
	Li, Yuping 1; Li, Hongbin 2; Li, Yuanyuan 1; Zhang, Suiqi 1,2; Zhang, SQ (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
文章类型	Article
	2017
发表期刊	CROP JOURNAL
ISSN	2095-5421
通讯作者邮箱	sqzhang@ms.iswc.ac.cn
卷号	5 期号:3 页码:231-239
摘要	In wheat, the ear is one of the main photosynthetic contributors to grain filling under drought stress conditions. In order to determine the relationship between stomatal characteristics and plant drought resistance, photosynthetic and stomatal characteristics and water use efficiency (WUE) were studied in two wheat cultivars: the drought-resistant cultivar 'Changhan 58' and the drought-sensitive cultivar 'Xinong 9871'. Plants of both cultivars were grown in pot conditions under well-watered (WW) and water-stressed (WS) conditions. In both water regimes, 'Changhan 58' showed a significantly higher ear photosynthetic rate with a lower rate of variation and a significantly higher percentage variation of transpiration compared to control plants at the heading stage under WS conditions than did 'Xinong 9871' plants. Moreover, 'Changhan 58' showed lower stomatal density (SD) and higher stomatal area per unit organ area (A) under both water conditions. Water stress decreased SD, A, and stomatal width (SW), and increased stomatal length in flag leaves (upper and lower surfaces) and ear organs (awn, glume, lemma, and palea), with the changes more pronounced in ear organs than in flag leaves. Instantaneous WUE increased slightly, while integral WUE improved significantly in both cultivars. Integral WUE was higher in 'Changhan 58', and increased by a greater amount, than in 'Xinong 9871'. These results suggest that drought resistance in 'Changhan 58' is regulated by stomatal characteristics through a decrease in transpiration rate in order to improve integral WUE and photosynthetic performance, and through sustaining a higher ear photosynthetic rate, therefore enhancing overall drought-resistance. (C) 2016 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V.
关键词	Wheat Stomatal Structure Ear Photosynthesis Drought Resistance Water Use Efficiency
学科领域	Agriculture ; Plant Sciences
DOI	10.1016/j.cj.2017.01.001
URL	查看原文
收录类别	SCI
出版地	AMSTERDAM
语种	英语
WOS记录号	WOS:000402680500005
出版者	ELSEVIER SCIENCE BV
项目资助者	National Key Technology R&D Program of China [2015BAD22B01]; Plan 111 of the Ministry of Education [B12007]; National Natural Science Foundation of China [31500320]; Special Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C5] ; National Key Technology R&D Program of China [2015BAD22B01]; Plan 111 of the Ministry of Education [B12007]; National Natural Science Foundation of China [31500320]; Special Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C5]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7985
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Zhang, SQ (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Yuping,Li, Hongbin,Li, Yuanyuan,et al. Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat[J]. CROP JOURNAL,2017,5(3):231-239.
APA	Li, Yuping,Li, Hongbin,Li, Yuanyuan,Zhang, Suiqi,&Zhang, SQ .(2017).Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat.CROP JOURNAL,5(3),231-239.
MLA	Li, Yuping,et al."Improving water-use efficiency by decreasing stomatal conductance and transpiration rate to maintain higher ear photosynthetic rate in drought-resistant wheat".CROP JOURNAL 5.3(2017):231-239.