Full TGIF Record # 73392
Item 1 of 1
Publication Type:
i
Report
Author(s):Greipsson, S.
Author Affiliation:Troy State University, Department of Biological & Environmental Sciences, Troy AL
Title:Effects of stratification and GA3 on seed germination of a sand stabilising grass Leymus arenarius used in reclamation
Source:Seed Science and Technology. Vol. 29, No. 1, 2001, p. 1-10.
# of Pages:10
Publishing Information:Zurich: International Seed Testing Association
Keywords:TIC Keywords: Stratification; Gibberellic acid; Seed germination; Elymus arenarius; Reclamation; Dormancy; Seed dormancy; Diatomaceous earth
Abstract/Contents:"Seed of the sand-stabilising grass Leymus arenarius is used on a large-scale in dune reclamation in Iceland. Seed which is collected from wild populations is often dormant and methods of alleviating this dormancy were examined. Effects of gibberellic acid (GA3: 500 mgl-1) and prolonged (i.e. 2, 4 or 6 weeks) stratification (5°C) on seed germination of three refractory coastal populations of L. arenarius were studied under controlled conditions. Different seed coats were tested in order to improve germination in the field. Germination of hulled seed coated with diatomaceous earth with and without the inclusion of GA3 was compared to those of non-coated hulled or dehulled seed in a glasshouse and field experiments. Prolonged time of stratification (4 to 6 weeks) increased total germination for all populations. Treatment with GA3 resulted in a significantly higher total germination for two populations but rate of germination was slower than those of 6 weeks stratification. In the field, dehulled seed had significantly the lowest germination. In glasshouse and field experiments, coating hulled seed with diatomaceous earth did not improve germination compared to hulled seed. Adding GA3 to the seed coat of diatomaceous earth on hulled seed gave significantly the highest germination in the field. It is therefore recommended to include GA3 to a seed coat of L. arenarius used in reclamation projects."
Language:English
References:40
Note:Tables
Graphs
Geographic Terms:Iceland
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Greipsson, S. 2001. Effects of stratification and GA3 on seed germination of a sand stabilising grass Leymus arenarius used in reclamation. Seed Sci. Technol. 29(1):p. 1-10.
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