Abstract
The leaves of Alliaria petiolata have a potential to be used as green salad due to garlic like fragrance and high value of vitamin C and A. Unfortunately, it exhibited deprived germination because of poor physiological impediment and seed dormancy. In order to improve germination, scarified and non-scarified seeds were primed with 0.25, 0.5, 1, 2, 3, 4, 5 mM of gibberellic acid (GA3), ascorbic acid (AsA) and salicylic acid (SA), respectively. Seeds were also hydroprimed and compared with un-soaked seeds (control). Incubation with phytohormones substantially accelerated germination and seedling emergence compare with hydropriming and control. Two millimolar GA3 improved germination to 82 %, and reduced the germination time where 50 % of the total germinated seeds during the experiment, have germinated (t 50). Priming with 4 mM AsA increased germination to 54 % and reduced t 50 compared to control. SA inhibited germination of A. petiolata seeds. Sowing at ½ cm burial depth reduced emergence 89 % irrespective of priming. Seeds sown on a humid soil surface obtain the best seedling establishment. Priming non-scarified seeds with 2 mM GA3 resulted in faster germination within 10 days. Our scarification method was not successful and seemed to damage the seeds and reduced the germination.
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Acknowledgments
We thank University of Sargodha, Pakistan for awarded Faculty Development Program (FDP) scholarship for Ph.D. study to Muhammad Yasin and University of Copenhagen, Denmark for providing research support and facilities for the experiments.
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Yasin, M., Andreasen, C. Breaking seed dormancy of Alliaria petiolata with phytohormones. Plant Growth Regul 77, 307–315 (2015). https://doi.org/10.1007/s10725-015-0065-7
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DOI: https://doi.org/10.1007/s10725-015-0065-7