Screening of the Selenium-enriched Rice Varieties (Combinations) in Western Fujian

In order to select the selenium-enriched rice varieties suitable for being planted in western Fujian, create the local characteristic rice brands, and promote the development of selenium-enriched rice industry, by using the selenium-enriched soil resources in Quanzheng Village, Quanshang Town, Ninghua County, and taking the conditions of the selenium content reaching the standard limit value (0.04-0.3 mg·kg^-1) stipulated in the national standard GB/T 22499-2008 Selenium-enriched Rice, and the agronomic traits referred as the screening index of selenium-enriched varieties, eight rice varieties, including Yuxiang Liangyou Fuxiangzhan, Q Liangyou Simiao, Youxiang Youlong Simiao, Longjingyou 4013, Changliangyou Simiao, Yuzhenxiang, Yueliang Zhenhe, Huaxia Xiangsi, were introduced to carry out the field screening experiments of selenium-enriched rice varieties. And then the euclidean distance method was used for the cluster analysis. The results showed that the average selenium content in the rice samples of 8 rice varieties was 0.0469-0.0569 mg· kg^-1, which reached the national selenium content standard of Selenium-enriched rice. The results of cluster analysis by using the euclidean distance method showed that the performances of the four varieties, including Yuxiang Liangyou Fuxiangzhan, Q Liangyou Simiao, Changliangyou Simiao (CK) and Huaxia Xiangsi, were better. According to the comprehensive evaluation of the growth period, stress resistance and agronomic traits, the overall traits of the three varieties, including Yuxiang Liangyou Fuxiangzhan, Q Liangyou Simiao, and Changliangyou Simiao (CK), were superior with high yield of rice, strong stress resistance and high selenium content, which could be used as the selenium-enriched varieties planted in western Fujian. Huaxia Xiangsi and Yueliang Zhenhe could be used as the reserve varieties of selenium-enriched rice, while Youxianglong Simiao, Longjingyou 4013 and Yuzhenxiang were not recommended to be planted as the selenium-enriched rice varieties in western Fujian.