Effects of Salt Stress on Seed Germination and Seedling Chlorophyll Content and Osmotic Potential of Maize
The effects of salt stress on seed germination , seedling growth and chlorophyll content and os-motic potential in maize leaves were studied with NaCl to simulate salt environment .The results indicated that the effects of 100 mmoL? L-1 NaCl on seed germination and seedling growth of Zhengdan 958 was not signifi-cant , but the seed germination and seedling growth of Ludan 661 were significantly promoted .The seed germi-nation and seedling growth of Zhengdan 958 and Ludan 661 were inhibited significantly by the treatments of 200 mmoL? L-1 NaCl and much higher concentrations .Under the 200 or 250 mmoL? L-1 NaCl treatment , the root growth was inhibited more than shoot growth , and the chlorophyll content increased; but under the treatments with higher concentrations , the root growth was inhibited less than shoot growth , and the chlorophyll content decreased .With the increase of NaCl concentration , the osmotic potential decreased .Therefore, maize had some salt tolerance ability .The seed germination and seedling growth could be promoted under low-er NaCl concentration (≤100 mmoL? L-1 NaCl ) and be inhibited under high NaCl concentrations (≥200 mmoL? L-1 NaCl) .The effects of salt stress on seed germination and seedling growth of corn were different a-mong different maize varieties .
国家科技期刊平台
NSTL
万方数据
维普
