雍立华,许兴,李树华,景继海,何军,朱林,董建力,袁汉民,王娜,严奉坤.春小麦碳同位素分辨率与水分利用效率的相关性[J].干旱地区农业研究,2007,(5):80~84
春小麦碳同位素分辨率与水分利用效率的相关性
Relationship between water-use efficiency and carbon isotope discrimination in spring wheat
  
DOI：10.7606/j.issn.1000-7601.2007.05.16
中文关键词:  碳同位素分辨率  水分利用效率  春小麦
英文关键词:carbon isotope discrimination  water-use efficiency  spring wheat
基金项目:国际原子能(IAEA)项目“中国西北小麦农艺水分利用效率的遗传改良研究”(12651/RBF)； 国家“973计划”项目“作物应答高盐、低温胁迫的分子调控机理”(G2006CB100106)
作者单位
雍立华 宁夏农业生物技术重点实验室，宁夏 银川 750002；宁夏大学农学院，宁夏 银川 750021 
许兴 宁夏农业生物技术重点实验室，宁夏 银川 750002；宁夏大学农学院，宁夏 银川 750021 
李树华 宁夏农业生物技术重点实验室，宁夏 银川 750002 
景继海 宁夏固原地区农科所，宁夏 固原 756000 
何军 宁夏大学农学院，宁夏 银川 750021 
朱林 宁夏大学农学院，宁夏 银川 750021 
董建力 宁夏农业生物技术重点实验室，宁夏 银川 750002 
袁汉民 宁夏农业生物技术重点实验室，宁夏 银川 750002 
王娜 宁夏大学农学院，宁夏 银川 750021 
严奉坤 宁夏农业生物技术重点实验室，宁夏 银川 750002；宁夏大学农学院，宁夏 银川 750021 
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中文摘要:
      以20个春小麦基因型为材料,研究了其旗叶和籽粒的碳同位素分辨率及水分利用效率在宁夏的两种生态条件下(有限灌溉地区和雨养地区)连续3 a的变化与相关性。结果表明,WUE、ΔLa、ΔGm存在年际间、试验地点间、基因型间的差异,基因型与环境互作效应不显著。ΔLa与ΔGm相关性较好,但WUE与ΔLa、ΔGm的关系存在年际间的变化,高WUE品种的筛选应该将碳同位素分辨率与其它生理生化或农艺指标相结合。
英文摘要:
      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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