低铝水稻品种的遴选

目的]筛选铝含量低的水稻基因型品种。方法]从国内不同地区采集了239份水稻样品,用ICP测定稻米中各种元素含量,研究不同基因型精米的铝含量分布,分析铝含量与其他微量元素含量的关系以及与氨基酸含量的关系,遴选出含铝较低的水稻品种。结果]239份稻米样品中铝含量在1.67～73.81 mg/kg,平均值为(14.161 5±5.822)mg/kg,变异系数为41%。不同基因型水稻精米铝含量频率为正态分布,其含量差异极显著。精米中铝含量与微量元素Fe含量相关性不显著,与Cu、Mo、Zn、Mn、Co含量相关性极显著。精米中铝含量与氨基酸含量相关性均不显著。结论]水稻精米铝含量除受遗传因素的控制之外,还受气候、土壤和灌溉水等环境因素的影响。

Selection of Low Aluminum Rice Varieties

Objective] To select low aluminum content genotypes of rice(Oryza sativa L.) varieties.Method] Contents of various elements in the 239 rice samples collected from different regions were measured by ICP to study the distribution of aluminum content of different genotypes of polished rice,analyze the relationship between the content of aluminum and other trace elements,amino acid,and select low aluminum rice varieties.Result] The aluminum content of 239 rice samples was between 1.67 to 73.81 mg/kg,the average value was(14.161 5±5.822) mg/kg,and the coefficient of variation was 41%.The frequency of aluminum content in different genotypes of rice showed a normal distribution,its content difference was extremely significant.The aluminum content in polished rice was not significantly correlated with the trace elements Fe content and amino acids,but significantly correlated with Cu,Mo,Zn,Mn and Co content.The correlation between Al content and amino acid content in polished rice was not significant.Conclusion] Aluminum content in the rice polished rice was influenced not only by genetic factors,but also by the climate,soil and irrigation water and other environmental factors.