PJB-2018-675
Effects of seed age, germination temperature, gibberellic acid and stratification on germination of Silene compacta
Selma Kosa and Osman Karaguzel
Abstract
Natural populations of Silene compacta, native to South Anatolia, have ornamental potential for use in bedding plant design. However, some germination difficulties need to be overcome to meet industry needs. In the present study, the effects of seed age, germination temperature, gibberellic acid (GA3), and stratification on germination characteristics of S. compacta seeds were investigated in two experiments. First, the effects of seed age (1 and 2 years), germination temperature (10, 15, 20, 25, and 30°C), and GA3 treatment (soaking the seeds in distilled water as the control, and GA3 solutions of 125 and 250 mg.L-1 concentrations for 24 h) were tested. Second, the effects of seed age (1 and 2 years) and stratification (wet at 4°C) durations for 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22 weeks on S. compacta seed germination characteristics at 25°C were investigated. Results from the first experiment indicated that seed age, germination temperature, and GA3 treatments significantly affected S. compacta seed germination characteristics. Germination was higher in non-GA3 treated 2-year-old seeds at germination temperatures of 25°C than in other experimental treatments. Consequently, the highest, but not adequate, germination (21.33%) was recorded in non-GA3 treated 2-year-old seeds. In the second experiment, significant linear and quadratic relations were found with stratification durations and germination characteristics of S. compacta seeds with significant differences relating to the seed age. The highest germination percentage (82.67%) and most adequate germination characteristics were recorded in 2-year-old seeds stratified for 18 weeks. Results indicated that seeds of this S. compacta native population have deep physiological dormancy
To Cite this article:
Kosa, S. and O. Karaguzel. 2020. Effects of seed age, germination temperature, gibberellic acid and stratification on germination of Silene compacta. Pak. J. Bot., 52(3): DOI: http://dx.doi.org/10.30848/PJB2020-3(18)
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