紫外线(UV-B)照射对水稻产量及稻米蛋白质含量的影响

以抗紫外线UV-B的日本粳稻品种Sasanishiki为材料,1999年和2000年在大田条件下,探讨了不同生育时期的UV-B处理对水稻产量、糙米的大小及蛋白质含量的影响.结果表明,营养生长期(移栽至幼穗分化)、生殖生长期(幼穗分化至抽穗)及抽穗成熟期的UV-B处理对Sasanishiki的产量及其构成因素的影响不显著;生殖生长期(幼穗分化至抽穗)与

Effect of Supplement Ultraviolet-B Radiation on Yield and the Content of Protein in Rice (Oryza sativa L.)

Effect of supplement Ultraviolet-B(UV-B) radiation during different growth stages on yield potential and protein content were investigated by using Sasanishiki ( O.sativa L. subsp. japonica ), an UV-resistant cultivar from Japan as material. Differences in yield and yield components were not significant between the control and the UV-B treatments during the vegetative stage (from transplanting to panicle forming), reproductive stage (from panicle forming to heading) and flowering-ripening stage (from heading to ripening). It was found that the percentage of higher thick-sized brown rice tended to decrease due to UV-B radiation. The content of total N and protein in brown rice increased by supplement UV-B radiation during flowering-ripening stage. Among the components of protein, only the content of glutelin was increased significantly by UV-B treatment.