• Proceedings of the Plant Resources Society of Korea Conference
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• 2000.05a
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• pp.62-62
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• 2000

• Korean Journal of Food Science and Technology
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• v.13 no.3
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• pp.247-252
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• 1981

As a primary study for the improvement of yield and preference of soybean sprouts, the water absorption rates by soaking and the growing characteristics of sprouts were investigated. When the soybeans were soaked in subterranean water at $18^{\circ}C$ for 4 hours, water absorption rates by weight percent of soybeans were ranged $167.0{\sim}194.5%$, and it means that the absorption rates do not greatly influence its germination rates. The yield of soybean sprout whose common name is Guryetai and of the sprout treated with 1 ppm Gibberellin marked the highest value, 837% and 585%, respectively. In case of industrial cultivation of soybean sprout, it is supposed that sprinkling with subterranean water is good for prevention of deterioration by growth of microorganisms and respiratory heat.

• Journal of Life Science
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• v.25 no.4
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• pp.390-396
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• 2015

This study was carried out to investigate the action of phytohormones which influence the adventitious root formation of calli originating from the leaves of Persicaria perfoliata. The optimal medium condition for callus formation was ½-strength MS, 1% sucrose, and 4.5 μM 2,4-D. In order to determine which phytohormones had an effect on the adventitious root formation, the calluses were cultured in various media with different kinds of phytohormones. As a result, the medium with GA₃ or IAA was shown to induce root formation. To deeply investigate the effects of GA₃ and IAA, calli were cultured in 0.1, 1, and 10 mg/l levels of phytohormones. Numbers of roots formed per callus were 10.9, 14.2, 22.6 in GA₃, 5.8, 3.9, 1.1 in IAA, respectively. Therefore, the higher GA₃ or the lower IAA concentration, the more roots formed. To confirm this role of GA₃ we tested with inhibitors PBZ and NPA. GA₃ with PBZ resulted in reduction by 52.4~69.4% compared to GA₃ alone. In contrast, GA₃ with NPA resulted in an increase by -8~45.6% compared to GA₃ alone in root formation. Also, results were determined on the effect of GA₃ with other phytohormones on root formation. Kinetin, 2iP and ABA with GA₃ had a negative effect, but IAA with GA₃ showed a similar result to GA₃ alone. From these results we infer GA plays a key role and auxin has subsidiary activity on adventitious root formation. This is the first report that indicates GA₃ promotes adventitious root formation from calli in P. perfoliata.

• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.195-201
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• 2000

This study was conducted to investigate the suitable conditions for seed germination of Rosa davurica PALL. In the characteristics of the fruit and seed of Rosa davurica, fruit length and width was 1.3cm and 0.9cm , respectively, and seed number was eighty-nine. Artificial and low temperature storage at 4$^{\circ}C$ increased the rate of split achene pericarp until 46.6% and storage at 15$^{\circ}C$ incubator decreased the rate of split achene pericarp (10.5%). The rate of seed germination of split achene pericarp in control at 15$^{\circ}C$ was 90% and of non-split achene in GA$_3$100ppm at 15$^{\circ}C$ was 36.8%. Average germination day of split achene pericarp seeds in GA$_3$150ppm at 2$0^{\circ}C$ was 4.2 days and non-split achene pericarp in GA$_3$100ppm at 2$0^{\circ}C$ was 7.3 days. Seed germination was not different between various concentrations of GA$_3$ treatments in split achene pericarp seeds but the rate of germination was more reduced in high concentration of 200ppm. Only the treatments of GA$_3$ was increased germination rate at 4$^{\circ}C$ and immature seed of Rosa davurica.