兰州大学机构库 >生命科学学院
Recently-released genotypes of naked oat (Avena nuda L.) out-yield early releases under water-limited conditions by greater reproductive allocation and desiccation tolerance
Wang, T; Du, YL; He, J; Turner, NC; Wang, BR; Zhang, C; Cui, T; Li, FM(李凤民); Li, FM (reprint author), Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China.
2017-03-15
发表期刊FIELD CROPS RESEARCH
ISSN0378-4290
卷号204页码:169-179
出版者ELSEVIER
摘要Naked oat (Avena nuda L) is becoming increasingly popular because of its high nutritive value and increased yields. As naked oat is grown in marginal environments, one of the limitations to yield is drought stress. In this study conducted in the field and a rainout shelter, the yield, water relations, and physiological and biochemical responses to drought of six genotypes, three released since 2008 (recently released, RR) and three genotypes released at least 60 years earlier (early-released, ER) were compared. The grain yield, harvest index (HI) and water use efficiency for grain were higher in the RR than ER genotypes under rainfed and irrigated conditions in the field and under drought and well-watered conditions in the rainout shelter. Aboveground biomass and HI had significant direct effects on grain yield, while leaf dry weight was negatively associated with grain yield in the rainout shelter. During a progressive soil drying experiment, the threshold soil water content (SWC) when stomatal conductance and photosynthesis began to decrease was lower in the RR [48-52% field capacity (FC)] than ER (54-58% FC) genotypes, but whole plant transpiration began to decrease when the leaf water potential and relative water content began to decrease at a threshold SWC of 31-44% FC in both the RR and ER genotypes. The beginning of the decrease in stomatal conductance and photosynthesis was associated with the increase in leaf abscisic acid concentration, but higher osmolyte accumulation, greater osmotic adjustment and less lipid peroxidation in the RR genotypes than the ER genotypes occurred at low SWC (below 30% FC) and are associated with greater desiccation tolerance in the RR genotypes. We conclude that the higher yields in the RR genotypes of naked oat are associated with selection for higher reproductive allocation and desiccation tolerance. The role of stomatal closure and osmotic adjustment on adaptation to drought are discussed. (C) 2017 Elsevier B.V. All rights reserved.
出版地AMSTERDAM
关键词Drought stress Osmotic adjustment Leaf water potential Photosynthesis Relative water content Transpiration
学科领域Agriculture
作者部门[Wang, Tao;
Du, Yan-Lei;
He, Jin;
Turner, Neil C.;
Wang, Bing-Ru;
Zhang, Cong;
Cui, Ting;
Li, Feng-Min] Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China;
[Turner, Neil C.] Univ Western Australia, UWA Inst Agr, M082,Locked Bag 5005, Perth, WA 6001, Australia
DOI10.1016/j.fcr.2017.01.017
文章类型Article
收录类别SCIE
所属项目编号National Nature Science Foundation of China [31300328, 31470496] ; Fundamental Research Funds for Central Universities [lzujbky-2016-86, lzujbky-2015-ct02] ; '111' Program [2007B051] ; Program for Innovative Research Teams of Ministry of Education of China [IRT_13R26] ; University of Western Australia
语种英语
资助项目国家自然科学基金项目 ; 长江学者和创新团队发展计划 ; 高等学校学科创新引智计划(111计划) ; 中央高校基本科研业务费专项资金
项目资助者NSFC ; MOE ; SAFEA ; LZU
WOS记录号WOS:000397361800016
IR记录号WOS:000397361800016
第一机构
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文献类型期刊论文
条目标识符http://ir.lzu.edu.cn/handle/262010/189931
Collection生命科学学院
通讯作者Du, YL; Li, FM (reprint author), Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China.
作者单位14LIFE
Recommended Citation:
GB/T 7714
Wang, T,Du, YL,He, J,et al. Recently-released genotypes of naked oat (Avena nuda L.) out-yield early releases under water-limited conditions by greater reproductive allocation and desiccation tolerance[J]. FIELD CROPS RESEARCH,2017,204:169-179.
APA Wang, T.,Du, YL.,He, J.,Turner, NC.,Wang, BR.,...&Li, FM .(2017).Recently-released genotypes of naked oat (Avena nuda L.) out-yield early releases under water-limited conditions by greater reproductive allocation and desiccation tolerance.FIELD CROPS RESEARCH,204,169-179.
MLA Wang, T,et al."Recently-released genotypes of naked oat (Avena nuda L.) out-yield early releases under water-limited conditions by greater reproductive allocation and desiccation tolerance".FIELD CROPS RESEARCH 204(2017):169-179.
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