| Relationship between water-use efficiency and carbon isotope discrimination in spring wheat |
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| DOI：10.7606/j.issn.1000-7601.2007.05.16 |
| Key Words: carbon isotope discrimination water-use efficiency spring wheat |
| Author Name | Affiliation | | YONG Li-hua | Ningxia Agricultural Bio-Technological Laboratory,Yinchuan,Ningxia 750002,China；Agricultural College of Ninxia University,Yinchuan,Ningxia 750021,China | | XU Xing | Ningxia Agricultural Bio-Technological Laboratory,Yinchuan,Ningxia 750002,China；Agricultural College of Ninxia University,Yinchuan,Ningxia 750021,China | | LI Shu-hua | Ningxia Agricultural Bio-Technological Laboratory,Yinchuan,Ningxia 750002,China | | JING Ji-hai | Guyuan Institute of Agricultural Sciences,Guyuan,Ningxia 756000,China | | HE Jun | gricultural College of Ninxia University,Yinchuan,Ningxia 750021,China | | ZHU Lin | gricultural College of Ninxia University,Yinchuan,Ningxia 750021,China | | DONG Jian-li | Ningxia Agricultural Bio-Technological Laboratory,Yinchuan,Ningxia 750002,China | | YUAN Han-min | Ningxia Agricultural Bio-Technological Laboratory,Yinchuan,Ningxia 750002,China | | WANG Na | gricultural College of Ninxia University,Yinchuan,Ningxia 750021,China | | YAN Feng-kun | Ningxia Agricultural Bio-Technological Laboratory,Yinchuan,Ningxia 750002,China；Agricultural College of Ninxia University,Yinchuan,Ningxia 750021,China |
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| Abstract: |
| In order to study the relationship between the water-use efficiency and carbon isotope discrimination,twenty spring wheat varieties/lines were grown in two ecological environments(limited irrigation area and rain-fed area) in Ningxia from 2004 to 2006 spring wheat growth season.Water-use efficiency(WUE) and carbon isotope discrimination of flag leaves(ΔLa) and kernels(ΔGm) were measured.The result showed that large significance was observed in genotypic, site and year variation for WUE、ΔLa、ΔGm. And genotype×environment interaction for them was not significant.Although ΔLa and ΔGm were significantly correlated in two years,lager variation were notable for relation between ΔLa,ΔGm and WUE across years. As a result,Δ may serve as a predictive criterion for high water-use efficiency,but which should combined with other traits under limited irrigation and rain-fed conditions in Ningxia. |
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