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, Yuping1; Li, Hongbin2; Li, Yuanyuan1; Zhang, Suiqi1,2; Zhang, SQ (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationCROP JOURNAL
ISSN2095-5421
description.correspondentemailsqzhang@ms.iswc.ac.cn
Volume5Issue:3Pages:231-239
AbstractIn 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.
KeywordWheat Stomatal Structure Ear Photosynthesis Drought Resistance Water Use Efficiency
Subject AreaAgriculture ; Plant Sciences
DOI10.1016/j.cj.2017.01.001
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Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000402680500005
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational 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]
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7985
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorZhang, SQ (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.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
Recommended Citation
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.
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