Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (15): 66-71.doi: 10.11924/j.issn.1000-6850.casb17040139

Previous Articles     Next Articles

Effects of Pretreatment on Seed Germination of Wild Poa in Tibet Plateau

  

  • Received:2017-04-22 Revised:2018-05-08 Accepted:2017-06-23 Online:2018-05-29 Published:2018-05-29

Abstract: To explore the rapid germination methods of wild forage in degraded grassland, and provide a scientific basis for vegetation restoration in Tibet Plateau, the seeds of wildPoa at different altitudes were used as materials, the germination characteristics were observed with different pretreatments (soaked with 25℃ warm water, 0.1% H2O2, 0.1% KMnO4, 0.1% KNO3). The results showed that the responses of seed germination of wildPoa at different altitudes to different pretreatments were different. Soaked with 25℃ warm water, the germination rate, germination index and germination speed of wildPoa seeds at 4234 m and 4848 m could be improved obviously, and the germination rate was the highest when the seeds were soaked for 20 h. Soaked with 0.1% KMnO4 could improve the germination rate of wild Poa seeds at 4654 m markedly, and it also enhanced the germination rate, germination index and germination speed of wild Poa seeds at 4848 m. In conclusion, soaked with warm water could improve the initial germination time of wildPoa seeds, increase the germination rate and uniformity. The effect of seeds soaked for 20 h was the best. Soaked with KMnO4 could shorten seedling emergence time and improve the germination rate at certain altitudes.