摘要
【目的】小麦品种籽粒铁和锌等微量营养元素含量研究对人体健康具有重要意义。【方法】来自北京、河北、河南、山东、山西和陕西等6省区240个小麦品种和高代品系于1997～1998年度种植在中国农业科学院作物科学研究所农场试验田,收获后分析籽粒中包括铁、锌、锰、铜等微量元素和钙、镁、钾、磷、硫等常量元素在内的主要矿物质元素含量。【结果】品种间各微量和常量矿物质元素含量均存在明显差异。微量元素中,铁平均含量最高,为41.9mg·kg-1;铜含量最低,为5.54mg·kg-1。常量元素中,钾平均含量最高,达4747mg·kg-1;钙含量最低,为465mg·kg-1。除镁和硫元素外,其它各元素含量变幅均较大。不同地区来源品种籽粒中的矿物质元素含量差别较大,北京和山东品种铁、锌、铜等微量元素含量较高,河北和山东品种钙、镁、磷等常量元素含量较高,河南品种大部分微量和常量元素含量都较低。籽粒中铁和锌(r=0.630)、镁与磷(r=0.571)、镁与硫(r=0.521)、锌与磷(r=0.502)、磷与硫(r=0.537)等元素含量间相关系数均较高,达0.001显著水平,表明可以同时提高小麦籽粒中铁、锌和磷等矿物质元素的含量。【结论】铁和锌等元素含量高的品种(系)间存在明显的亲源关系,说明在育种中通过选择或选用矿物质元素含量高的亲本可以提高矿物质元素的含量。并指出现阶段应进一步从中国现有小麦品种特别是各地主栽品种中筛选矿物质元素特别是铁和锌含量高的基因型,以经济有效地直接或间接利用这些材料。
【Objective】Investigation on concentration of mineral elements including micronutrients as Fe and Zn in wheat grains which are essential for human life is very important for human health.【Method】240 cultivars and advanced lines,originated from Beijing,Hebei,Henan,Shandong,Shanxi,and Shaanxi Provinces,were collected and sown in the experiment station of Institute of Crop Science,in Chinese Academy of Agriculture Sciences in 1997-1998 wheat season,to evaluate the concentrations of major mineral elements in grain including micronutrients as Fe,Zn,Mn,Cu,and macronutrients as Ca,Mg,K,P,S.【Result】Large variation for most of the mineral element concentrations except Mg and S,and big difference between cultivars for all the mineral element concentrations were observed.Among the micronutrients,Fe performed the highest average concentration,with value being of 41.9 mg·kg^-1,while the lowest for Cu,with value being of 5.54 mg·kg^-1.Among the macronutrients,K had the highest average concentration,with value being of 4 747 mg·kg^-1,while the lowest for Ca,with value being of 465 mg·kg^-1.There were large differences for the mineral element concentrations among cultivars with different origin.The cultivars from Beijing and Shandong performed high concentrations for most of the micronutrients,the cultivars from Hebei and Shandong had high concentrations for most of the macronutrients,while the cultivars from Henan Province had the lowest concentration for most of the mineral elements including micro-and macronutrients.Highly significant positive correlations between the concentrations of Fe and Zn（r = 0.630）,Mg and P（r = 0.571）,Mg and S（r = 0.521）,Zn and P（r = 0.502）,and P and S（r = 0.537）were also observed,indicating the possibility for improving these mineral element concentrations at the same time.【Conclusion】There was obvious pedigree relationship among the cultivars and advanced lines with high concentration of mineral elements as Fe and Zn,suggesting that parents with high mineral element concentrations and grain yield should be used first of all in crossing with the main objective being to improve mineral element concentrations in wheat breeding program.It was also indicated that in the current situation leading cultivars should be screened for mineral element concentrations in order to be used directly or indirectly in wheat breeding program economically and effectively.
出处
《中国农业科学》
CAS
CSCD
北大核心
2007年第9期1871-1876,共6页
Scientia Agricultura Sinica
基金
国际合作Harvest-Plus挑战项目资助
关键词
普通小麦
籽粒
矿物质元素
生物强化
Triticum aestivum
Grain
Mineral element
Bio-fortification
