NaCl胁迫对新疆罗布麻种子萌发的影响

研究了不同浓度的NaCl溶液对罗布麻种子萌发的影响及复水后罗布麻种子的萌发情况。结果表明，NaCl对罗布麻种子的萌发有明显的抑制作用，种子的发芽率与盐浓度之间呈显著的负相关关系，种子萌发时盐胁迫的适宜值、临界值、极限值分别是0．30mol／L、0．60mol／L、0．90mol／L。盐胁迫解除后，罗布麻种子仍具较高的发芽率，且发芽速度和整齐度较高。

Effects of NaCl Stress over Apecynum Seed Germination in Xinjiang

The study looks into effects of NaCI solutions with different concentration over Apocynum seed germination before and after rehydration. The study shows that NaCl could noticeably contain Apocynum seed germination, and the higher the NaCl concentrate, the lower the seed germination. The appropriate value, thresh- old limit value and the limit value for seed germination under NaCl stress is 0.30mol/L,0.60mol/L and 0.90mol/L respectively. Rid of NaCl stress, Apocynum seed still maintains high germination with even speed and uniformity.