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KMID : 0903620010420030346
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Journal of the Korean Society for Horticultural Science
2001 Volume.42 No. 3 p.346 ~ p.350
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The Priming Technology for Increasing Seed Viability by Using KNO3 , K3PO4 , and Plant Growth Regulators in Cacti
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Abstract
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The experiments were conducted to develop the technology for increasing the viability of the seeds of cacti, Eriocereus tortuosus and Hylocereus trigonus, by priming with KNO₃ (50, 100, and 200 mM), K₃PO₄ (50, 100, and 200 mM), GA₃ (1, 10, 100 and 500 ppm) and NAA (0.1, 1, 5, and 10 ppm). The germination rate of Eriocereus tortuosus treated by 200 mM KNO₃ was higher at 20℃ than at 25 and 30℃. The effect of K3P04 on the germination rate of Eriocereus tortuosus wasn´t significantly different from control. The priming periods for Eriocereus tortuosus was longer than 3 days at 20℃. The germination rate of Hylocereus trigonus was increased by the treatment of 200 mM KNO₃ at 25℃. All the treatments of K₃PO₄ except 50 and 100 mM at 30℃ reduced the germination rate. The priming periods for Hylocereus trigonus was longer than 3 days at 25℃. While plant growth regulators didn´t show significant effect on the germination rate of Eriocereus tortuosus, they increased the germination rate of Hylocereus trigonus at 20 and 25℃ as compared to the control. Neither priming treatments nor plant growth regulators have any effect on shortening the days to 50% of final germination rate (T_(50)) of Eriocereus tortuosus and Hylocereus trigonus.
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