不同水稻品种的硒富集能力及品质分析

摘要

In order to select the good quality rice species with rich selenium,the soil and rice samples were collected from selenium-rich areas in Ankang,and were used to analyze the selenium content and quality of rice.The results showed that the average selenium content of 13 rice varieties was 0·08 mg/kg.When the soil selenium content reached the maximum 0·82 mg/kg,the rice variety Guofeng 1 showed the maximum selenium content level of 0·16 mg/kg.Yuyou 35 had the minimum selenium content of 0·04 mg/kg when the soil selenium content was 0·31 mg/kg.Dyou 11 presented relatively a higher selenium content of 0·14 mg/kg in condition of low soil selenium(0·31 mg/kg).It suggested that the capacity of extracting selenium from soil varied greatly in different varieties.Within a certain range,the selenium content and quality of rice increased with the increase of soil selenium content.By comparison,Dyou 11 and Huiyouduoxi 1 were selected as the varieties with good quality and high selenium enrichment ability.%为遴选硒富集能力强的优质水稻品种，在安康富硒区域采集土壤和水稻样品进行分析，研究了不同土壤含硒量对稻米硒含量和品质的影响。结果表明：13份水稻品种平均硒含量达0·08 mg/kg，国丰1号品种在对应土壤硒含量达0·82 mg/kg 的最高水平下，稻米中硒含量达最高0·16 mg/kg；品种渝优35对应土壤硒含量达0·31 mg/kg 的较高水平，稻米硒含量却相对最低，仅为0·04 mg/kg；品种 D 优11号在土壤硒含量达0·31 mg/kg 的较高水平下，稻米中硒含量却很高，达到了0·14 mg/kg，说明不同水稻品种对硒的富集能力存在差异，但总体上稻米硒含量随土壤含硒量升高呈增加趋势，有利改善稻米品质。综合品质指标，遴选出 D 优11号和徽优多系1号为品质和硒富集能力较优的品种。