盐胁迫对不同品种菠菜种子萌发特性的影响

采用6个有代表性的菠菜栽培品种(8#、23#、27#、39#、48#、53#),用浓度为0、0.25%、0.50%、0.75%1、.00%、1.25%、1.50%、2.00%的NaCl溶液对种子发芽作盐胁迫处理,分别观测NaCl胁迫对发芽势、发芽率、发芽指数、活力指数、鲜重等发芽指标的影响。结果表明:NaCl胁迫下,各品种发芽势、发芽率指标均随盐浓度的增加呈波状变化,但发芽指数、活力指数、鲜重则随浓度的增加而先升高后降低。当NaCl达0.5%时,48#品种各项发芽指标均达最高值,且均在其它品种之上,是参试品种中耐盐性表现最好的品种。

Effects of Salt Stress on Seed Germination of Different Spinach Varieties

6 representative spinach cultivars(8#、23#、27#、39#、48#、53#) were used in this experiment.The germination tendency,germination percentage,germination index,vigor index and fresh weight were tested to determine the effects of salt stress at the concentration 0,0.25%,0.50%,0.75%,1.00%,1.25%,1.50% and 2.00%.The results indicated that,under the salt stress,the indices of germination tendency and percentage were waveform and the others first rose and then droped with the increasing of salinity.At 0.5%,48# was superior in each index.The salt tolerance of 48# was the best among the 6 species in every test.