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KMID : 0613820020120060694
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Journal of Life Science
2002 Volume.12 No. 6 p.694 ~ p.699
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Effect of Seed Coat Softening, Washing and Drying on Seed Germination of Gourd
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Kang Jin-Ho
Kang Shin-Yoon
Jeon Byong-Sam
Lee Sang-Woo
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Abstract
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The present experiment was carried out to determine the effect of seed-coat softening by various chemicals, washing, chilling, and light treatment alone and in combination during desiccation of seeds on germination of gourd (Lagenaria siceraria Standl.) seeds. Potassium hydroxide, sodium hydroxide, acetone, acetonitrile, and acetamide were used as chemicals for the softening. Washing, prechilling, drying and light treatment of the softened seeds were done for a hour with tap water, for one or three weeks at 3℃, 12 hr at 35℃, and 14 hr a day at 30℃ with red light illumination or darkness, respectively. FR-yongjadaemok and FR-kunghap were used as test cultivars. Seed-coat softening with 10% acetone and acetonitrile for 1 hour enhanced and accelerated seed germination compared to the other chemicals and water imbibition. KOH treated for the softening was necessary to increase the germination rate of seeds for following chilling, but acetone did not influence their germinability regardless of chilling. Washing the softened seeds in tap water increased the germination rate in comparison with no-washing. During desiccation of the seeds sequentially treated with the softening, washing and chilling, red light treatment showed higher germination rate than dark one, suggesting that red light treatment are necessary during desiccation.
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KEYWORD
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Gourd, Germination, Softening, Washing, Chilling, Light treatment
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