261 Effect of SMP and Brushing on Gourd Seed Germination at Different Temperatures

in HortScience
Authors:
Hae-Jeen BangDept. of Horticulture, Kyung Hee University,Yongin, 449-701, Republic of Korea

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Soo-Jung HwangDept. of Horticulture, Kyung Hee University,Yongin, 449-701, Republic of Korea

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Hyun-Sook HamDept. of Horticulture, Kyung Hee University,Yongin, 449-701, Republic of Korea

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Jung-Myung LeeDept. of Horticulture, Kyung Hee University,Yongin, 449-701, Republic of Korea

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The effectiveness of solid matrix priming (SMP) and seed brushing was further evaluated by using an thermo-gradient table (Seed Processing, Holland) set at 10 different temperatures from 12 to 30 °C. Intact or brushed seeds of gourd (Lagenaria siceraria) were primed with Micorocel E (Celite Corp.) at 25 °C for 3 days in the mixture of 10 seed: 1 Microcel E: 3 water, by weight, and the primed seeds were dried again for long-term storage. SMP treatment significantly increased earlier seed germination at all temperatures. However, the difference in seed germination rate between intact and SMP-treated seeds was most pronounced at somewhat lower temperatures of 18-22 °C. SMP-treated seed showed about 20% final germination rate at 12 °C, whereas intact seeds did not germinate at all. Seed brushing treatment itself did not influenced the germination rate. However, brushing treatment before SMP treatment significantly increased the SMP effect. Combined use of chemicals in solution further increased the early germination. Details of various seed treatment methods will be presented.

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