小麦碳同位素分辨率与叶片气孔相关指标的关系  

Relationship between Leaf Stomatal Indexes and Carbon Isotope Discrimination in Wheat

作　　者：逯芳芳[1] 李昌澎[1] 胡银岗[1,2,3,4] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100 [2]西北农林科技大学农学院,陕西杨凌712100 [3]国家小麦改良中心杨凌分中心,陕西杨凌712100 [4]陕西省农业分子生物学重点实验室,陕西杨凌712100

出　　处：《麦类作物学报》2010年第4期660-664,共5页Journal of Triticeae Crops

基　　金：国家“863”计划重点项目子课题(2006AA100201,2006AA100223);科技部“973”计划前期项目(2006CB708208);高等学校学科创新引智计划项目(111-2-16);澳大利亚ACIAR项目(CIM/2005/111)

摘　　要：为了探讨气孔相关指标替代碳同位素分辨率(Δ)作为评价指标的可行性,测定了56个小麦品种(系)的碳同位素分辨率(Δ),并分析了灌浆期不同阶段气孔相关指标与Δ值的相关性。结果表明,小麦旗叶和籽粒的Δ值均具有较好的遗传稳定性;灌浆中后期小麦旗叶的气孔导度和叶面温度都与Δ值有较强的相关性。因此,在育种中,可以通过测定灌浆中后期小麦旗叶的气孔导度和叶温代替Δ值对材料的蒸腾速率进行初步选择。This paper aims at probing whether the stomatal indexes could be used as an substitution for carbon isotope discrimination(Δ) in breeding program.The stomatal conductance and surface temperature of flag leaf at 5 different grain-filling stages were measured in 56 wheat cultivars grown at no-irrigation conditions,and their relationship with carbon isotope discrimination were analyzed.The results showed that the Δ measured from either flag leaf or grains had good stability and correlation analysis between the...

关 键 词：小麦 碳同位素分辨率 替代指标 气孔导度 叶面温度 

分 类 号：S512.1[农业科学—作物学]