| A germinative test of soaking 7 oats seeds from Canada in different concent ration of saltsolution composed by Na2SO4、NaCl and so on. The results showed that : under the stress of complex salts, the gemination postponed and lengthened, germinat ion ability 、gemination enerygy、gemination index and simple activity index of 7 oats seeds reduced
in different degree with the increase of salt concentration, but the salt injury index increased and there were significant or highly significant differences between different varieties. With the increase of the concentration of complex salts， the in-hibition degree to the gemination increased. Diferent oat varieties have various semi -lethal and whole-lethal concentra-tions. Among these seven naked oat varieties, Canadian 9 has the highest semi -lethal and whole lethal concentration, with 2.6% and 3.8% respectively; while Canadian 8 has the minimum semi-lethal and whole lethal concentration, with 1.4% and 2.4%. As the regression analysis ilustrated, the consequence of ability to tolerant mixed salt stress among seven Canadian naked oat varieties was afollow, Canadian 9> > Canadian 7> Canadian 10>Canadian 3> Canadian 6、Canadian 5> >Canadian 8. And, the conductivity can be used as a simple indicator to test salt tolerance of oat seed, the salt injuy index can be used an an indicator to judge the danger degree of oat seed. |