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《China Rice》 2016-02
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Effect of Temperature on Cadmium Content of Brown Rice in Different Cultivars

HE Yang;LIU Yang;FANG Baohua;LI Chao;YANG Jian;TENG Zhenning;HE Xiaoe;ZHANG Yuzhu;Hunan Province Rice Research Institute;College of Agronomy, Hunan Agricultural University;  
Field experiments were carried out to study the influence of temperature on brown rice cadmium accumulation with different early rice and late rice varieties as materials. The results indicated that the difference range of early-season variant varieties(S6) was5.29 times under different temperature and growth stage of the four different Cd resistant varieties, and was 67.4%, 12.8%, 181.4%higher than stable varieties(S1, S5, S4)respectively, the range of late-season variant varieties(K11)was 50.2%, 78.8%, 160.6% higher than stable varieties(K2, K33, K7)respectively. Comprehensive performance of cadmium content of brown rice in different rice cultivars, the tillering stage and filling stage are sensitive periods for temperature influence on uptake of cadmium; low temperature in early growth period and high temperature in later growth period contributes to accumulation of cadmium in grain.
【Fund】: 湖南省财政专项“湖南省镉低积累农作物品种筛选与选育”;; 国家科技支撑计划课题“湖南双季稻大面积均衡增产技术集成研究与示范”(2012BAD04B10)
【CateGory Index】: S511
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