Comparison of salt tolerance in different varieties of buckwheat

Different buckwheat (Fagopyrum esculentum Moench) varieties were used as experimental materials, and salt tolerance of buckwheat varieties during seed germination and seedling stage had been comparatively studied through measuring germination rate (Gr), germination index (Gi) and vigour index (Vi) of seeds, the ascent rate of root length, shoot height and fresh weight, plasmolemma permeability and malondialdehyde (MDA) content. The results showed that the vigour index (Vi) of seeds and the plasmolemma permeability of seedlings were especially sensitive indexes to salinity, and the salt tolerance of Chuanqiao No. 1 was the most, followed by Chuanqiao No. 2, while that of TQ-0808 was the least at the stage of seed germination and seedlings.