Journal of Hunan Ecological Science

【Objective】Investigating the effects of tungsten on the germination and seedling establish- ment of rice seeds can enrich the understanding of tungsten<0. 05) on seedling root length, with the inhibition intensity increasing with higher tungsten concentrations. Huanghuazhan seedlings were more sensitive to tungsten compared to the other two rice varieties. Tungsten inhibited the seed vigor index by up to 88. 3% and the biomass by up to 37% , further demonstrating its inhibitory effect on the growth of rice seedlings. Huanghuazhan showed lower tolerance to tungsten compared to Xiangzaoxian and Nanjing seedlings, with half-inhibitory concentrations of seedling height at 67, 94, and 72 mg / L, respectively. 【Conclusion】Tungsten does not affect the germination rate of rice seeds, but significantly inhibits the es- tablishment of rice seedlings, and the tolerance of different rice varieties to tungsten is different. This study provide a reference for rice production and variety selection in tungsten-contaminated soil areas.

rice; germination; tungsten; half-inhibitory concentration