Welcome to Acta Prataculturae Sinica ! Today is Share:

Acta Prataculturae Sinica ›› 2017, Vol. 26 ›› Issue (12): 56-66.DOI: 10.11686/cyxb2017088

Previous Articles     Next Articles

Effects of low temperature stratification on emergence of Lycium ruthenicum under drought at different sowing depths

ZHAO Jing-Zhong1, KONG Dong-Sheng2, 3, *, WANG Li1, GUO You-Yan2   

  1. 1.College of Forestry,Gansu Agricultural University, Lanzhou 730070, China;
    2.Hexi university, Lycium ruthenicum Engineering Technology Research Center of Gansu Province, Zhangye 734000, China;
    3.Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, Zhangye 734000, China
  • Received:2017-03-02 Revised:2017-05-27 Online:2017-12-20 Published:2017-12-20
  • Contact: E-mail:Kongdsh@sohu.com

Abstract: The emergence of fruits and seeds of Lycium ruthenicum after low temperature stratification and storage at room temperature in dry conditions was investigated. Emergence rate, emergence potential, seedling index and recovery rate of germination under different intensities of drought stress and different planting depth in sand were simulated using PEG-6000 solution. The germination rate of seeds and fruits treated with PEG solution was increased by 60.00% and 16.66% respectively compared with the control. The time to emerge was reduced by 7 and 9 days respectively, indicating that low temperature stratification could effectively eliminate the dormancy of seeds and fruits of L. ruthenicum. High osmotic potentials (-0.03 to -0.10 MPa) did not influence emergence indicating that under mild drought stress, fruit germination was not affected by low temperature stratification. Both the seed and fruit were able to germinate after drought stress was relieved. It was concluded that the optimum sowing depth of seeds and fruits of L. ruthenicum is 1 and 3 cm respectively. It is also possible to successfully plant the fruit of L. ruthenicum rather than plant seedlings, saving time and labour.