Seed Germination Characteristics of Zoysia macrostachya Franchet.Sav.and the Response to Salt and Drought Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Seed Germination Characteristics of Zoysia macrostachya Franchet.Sav.and the Response to Salt and Drought Stress

Author(s):: ZHAO Liping1; 2; YAO Zhigang1; XIE Wenjun2; LIU Junhua1; 1.Shandong Provincial Engineering and Technology Research Center for Wild Plant Resources Development and Application of Yellow River Delta，Binzhou，Shandong 256600；2.School of Bioengineering，Binzhou University，Binzhou，Shandong 256603

Keywords:: Zoysia macrostachya Franchet.Sav.; seed germination characteristics; salt and drought stress

Abstract:: The effects of different light/dark,temperature,salt stress and drought stress on seed germination characteristics of Zoysia macrostachya Franchet.Sav.were studied in this research.The results showed that the germination of Zoysia macrostachya Franchet.Sav.had no strict requirement for light and dark and the seed germination temperature ranged between 25 ℃ and 30 ℃.There was no significant effect on seed germination when the NaCl concentration was of 100 mmol?L^-1.It was significantly inhibited the seed germination when the NaCl concentration was of 150-200 mmol?L^-1.The critical and limit concentration of salt tolerant（NaCl） in Zoysia macrostachya Franchet.Sav.seed were 144.12 mmol?L^-1 and 244.12 mmol?L-1.With the degree of drought stress increasing,the time spent to complete germination process and the final germination rate decreased significantly.50 g?L^-1 PEG stress had no significant effect on seed germination rate；while under condition of 150-200 g?L^-1 PEG stress,the final seed germination rate had a significant downward trend.The critical and limit concentration of drought tolerant（PEG）were 90.95 g?L^-1 and 155.05 g?L-1.Seeds of Zoysia macrostachya Franchet.Sav.showed a great salt tolerance and drought tolerance at germination stage.

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Last Update: 2017-10-12