关键词: 黄酮类物质, 黄酮类物质

Abstract: The research aimed to further evaluate salt tolerance of different rice materials, so as to provide germplasm resources and parents for salt-tolerant rice breeding. 14 rice lines with strong salt tolerance and 7 rice varieties were used to evaluate salt tolerance in germination and seedling stage. The results showed that, when treated with 150 mmol/L NaCl, the germination rate and bud length of all materials were restrained to different extent. The germination rate of D-1, D-3, D-4, D-7, D-13, ‘Changbai 10’, ‘Jie 9’ and D10 were high, and its relative salt harm rate were low, the salt tolerance were showed to be very strong and the grade reached to 1, the ratio of salt treatment (T) and non-salt treatment (CK) of bud length were high, this indicated these materials suffered little from salt and with strong salt tolerance. When seedlings treated with 100 mmol/L NaCl, the rate of average dead leaf of materials ‘Changbai 10’, D-10, ‘Jie 10’, D-13, ‘Tianjin 4’, D-14, D-11, D-2, D10 and D-8 were low, the water content of ground and underground decreased little and the soluble sugar content increased more than other materials. Therefore, these materials have strong osmoregulation ability and have strong salt tolerance in seedling stage.