Full TGIF Record # 174752
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Author(s):Chai, Qi; Shao, Xinqing; Zhang, Jianquan
Author Affiliation:Chai and Zhang: Key Laboratory of Grassland Agro-Ecosystem Ministry of Agriculture, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, China; Shao: Institute of Grassland Science, Animal and Technology College, China Agricultural University, Beijing, The People's Republic of China
Title:Silicon effects on Poa pratensis responses to salinity
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 45, No. 12, December 2010, p. 1876-1881.
# of Pages:6
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Keywords:TIC Keywords: Cultivar improvement; Electrolyte leakage; Establishment rate; Germinability; Growth studies; Poa pratensis; Saline water; Salt tolerance; Silicon; Soil amendments; Stress response
Abstract/Contents:"Understanding turfgrass response to silicon (Si) application under salinity conditions is important to find a way to improve turfgrass salt tolerance for turf management. The objective of the study was to investigate effects of increasing amendment concentrations of Na2SiO3 on turf growth and distribution of Na+ and K+ in seedlings of kentucky bluegrass (KBG) (Poa pratensis L.) under salinity stress. This growth chamber experiment was consisted of a control (no salinity and no Si) and five Si amendment treatments (0, 0.24, 0.48, 0.72, and 0.96 g Si/kg saline soil) under 10 g·kg-1 salinity conditions. Seed germination rate was significantly increased after 12 d under 0.48 gDDTkg-1 Si treatment. Plant height and canopy coverage were increased under 0.72 g·kg-1 Si treatment after 40 and 44 d of treatment, respectively, and tiller number was increased under 0.96 g·kg-1 Si treatment compared with 0 Si under saline conditions. With the supplement of Si at 0.48 to 0.96 g·kg-1, the ratio of Na+/K+ in shoots was decreased and individual leaf area was increased compared with 0 Si under saline conditions. The increase in individual leaf area was mainly the result of the increase in the leaf blade length. The concentration of K+ in shoots was significantly increased, whereas the concentrations of Na+ in roots were significantly decreased under all Si amendment treatments. The content of K+ was higher in shoots than in roots, but the ratio of Na+/K+ in roots was higher than in shoots in all Si amendment treatments. The results indicate that under saline conditions, Si induced the transfer of K+ from roots to shoots but inhibited the absorption and transfer of Na+, which may contribute to better turf quality and growth with Si treatment under saline conditions."
See Also:Other items relating to: Salinity Management For Cool Season Grasses
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chai, Q., X. Shao, and J. Zhang. 2010. Silicon effects on Poa pratensis responses to salinity. HortScience. 45(12):p. 1876-1881.
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DOI: 10.21273/HORTSCI.45.12.1876
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MSU catalog number: b2217685a
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