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KMID : 0613820030130040433
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Journal of Life Science
2003 Volume.13 No. 4 p.433 ~ p.440
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Effect of Osmotic Priming and Solid Matrix Priming to Improved Seed Vigor and Early Growth of Pepper and Tomato Seeds
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Kang Jeom-Soon
Choi Young-Whan
Son Beung-Gu
Lee Yong-Jae
Choi In-Soo
Park Hyun-Chul
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Abstract
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Osmotic and solid matrix priming treatments enhanced germination performance. We compared osmotic with solid matrix priming to determine the more effective treatment for improving seed germination in pepper and tomato. Seed hydration was immediately observed after osmotic priming and solid matrix priming treatment. The moisture content of solid matrix primed seeds was lower than that of osmotic primed seeds in the two vegetable crops. Osmotic priming and solid matrix priming did not increased percent germination, but showed shorter number of days to 50% of the final germination percentage (T50) compared with untreated seeds, regardless of germination temperature. T50 value was reduced in osmotic or solid matrix primed pepper seeds about 6.0, 5.0, 4.6 and 4.0 days compared with untreated seeds at 15, 20, 25, and 30℃, respectively. While, that in tomato seeds was reduced about 3.3, 5.0, 4.6 and 4.0 days compared with untreated seeds at 15, 20, 25, and 30℃, respectively. The effectiveness of osmotic priming or solid matrix priming in reducing the T50 was greater when the seeds were germinated at 15℃ than at temperature of higher than 20℃. Solid matrix primed seeds germinated faster than osmotic primed seeds at all temperature in pepper. However, there was no significant difference on the percentage germination between solid matrix and osmotic primed seeds in tomato. After priming, dried-back seeds showed faster germination than surface-dried seeds in pepper. On the other hand, there was no significant difference in tomato. Emergence of pepper and tomato seeds was markedly enhanced by osmotic priming or SMP treatment although the final emergence percentage was not significantly influenced. On the other hand, early growth was not significantly influenced by osmotic priming or SMP treatment of pepper and tomato seeds.
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KEYWORD
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Micro-Cel E, percent germination, seed vigor, seed moisture content
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