Zeng Yanjun, Wang Yanrong, Sa Ren, Tian Xuemei
College of Pastoral Agriculture Science and Technology, Lanzhou University, Gansu Grassland Ecological Research Institute, Lanzhou.
Ying Yong Sheng Tai Xue Bao. 2002 Aug;13(8):953-6.
The seed germination, seedling growth and water absorption characteristic of Caragana korshinskii, Hedysarum scoparium, and Artemisia sphearocephala were investigated under different osmotic potentials (PEG 6000, -0.3(-) -2.7 MPa). The results showed that under drought stress, C. korshinskii had the highest germination rate, while A. sphearocephala had the lowest one. Under -0.3(-) -0.6 MPa, the root length of 10-day-old A. sphearocephala seedling was significantly longer than that of H. scoparium and Caragana korshinskii(P < 0.05), and the length reached 7.9, 4.5 and 3.1 cm, respectively. There existed a significant positive correlation between seed germination rate and 72 h water absorption rate of the three shrub seeds(P < 0.01). The relationships among germination characteristics, root length, and survive percentage of seedlings were also discussed.
在不同渗透势（PEG 6000，-0.3（-）-2.7 MPa）下，研究了柠条锦鸡儿、花棒和猫头刺的种子萌发、幼苗生长及吸水特性。结果表明，在干旱胁迫下，柠条锦鸡儿的发芽率最高，而猫头刺的发芽率最低。在-0.3（-）-0.6 MPa下，10日龄猫头刺幼苗的根长显著长于花棒和柠条锦鸡儿（P<0.05），长度分别达到7.9、4.5和3.1 cm。三种灌木种子的发芽率与72 h吸水率之间存在显著正相关（P<0.01）。还讨论了发芽特性、根长和幼苗成活率之间的关系。
