摘要
NaCl处理引起小麦幼苗干重下降 ,盐敏感品种比耐盐品种下降幅度要大。盐敏感品种的拒Na+ 能力为 35 %左右 ,耐盐品种的拒Na+ 能力为 5 0 %～ 6 0 %左右 ,这表明耐盐品种的拒Na+ 能力远远大于盐敏感品种。不同耐盐性小麦的拒Na+ 部位不同 ,盐敏感品种的拒Na+ 部位主要在根茎结合部 ,而耐盐品种的拒Na+
NaCl treatment caused a decrease in dry weight of wheat seedlings,and the degree of decrease was higher in salt sensitive cultivars than in salt tolerant ones. The Na + exclusion capability of salt sensitive cultivars was about 35%,and that of salt tolerant cultivars was 50%～60% (Table 2). This suggests that the Na + exclusion capability of salt tolerant cultivars is stronger than salt sensitive ones. It also indicates that the Na + exclusion localization of wheat with different salt tolerance was different:In salt sensitive cultivars,Na + exclusion occurred mainly in the root stem junction,but salt tolerant cultivars occurred mainly in the root (Fig.6).
基金
国家自然科学基金 (3 95 70 0 6)
山东省中青年科学家奖励基金 (971114 0 2 )项目资助
