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KMID : 0613820030130020137
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Journal of Life Science
2003 Volume.13 No. 2 p.137 ~ p.142
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Single or Combined Treatment Effect of Priming, Gibberellin and Prechilling on Germination of Gourd Seeds
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Kang Shin-Yoon
Kang Jin-Ho
Choi Young-Whan
Lee Sang-Woo
Jeon Byong-Sam
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Abstract
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The present experiment was done to determine the effect of priming, GA₃ and prechilling treatment alone and in their combination on germination of gourd (Lagenaria siceraria Standl.) seeds. Priming using KNO₃ and GA₃ were treated with different concentrations and periods whereas prechilling was done at only different periods. FR-yongjadaemok and FR-kunghap were used as test cultivars and their daily germination rates were measured at treatment levels. The best germination rate of each treatment was shown in a week prechilling at 3℃, a day priming with 100 mM KNO₃ and a day treatment with 0.01 mM GA₃ although the prechilling had the highest rate among them. The rate of priming treated after the prechilling was continuously decreased with its longer treatment periods and was less than no-priming. In addition, the rate of GA₃ treatment after the prechilling was not affected by its concentrations and treatment periods. Priming and GA₃ treatments before the prechilling, however, showed similar germiabilities between their treatment levels including no-treatment. The results mean that sequential order of available presowing treatments is important to enhancing the rate.
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KEYWORD
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Gourd, Germination, Priming, GA3, Prechilling
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