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KMID : 0613820030130010009
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Journal of Life Science
2003 Volume.13 No. 1 p.9 ~ p.14
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Effect of Germination Temperature and Light Quality on Germination of Pretreated Gourd Seeds
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Kang Shin-Yoon
Kang Jin-Ho
Jeon Byong-Sam
Choi Young-Whan
Lee Sang-Woo
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Abstract
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Seed germinability might be highly related to seedling establishment. The experiments were carried out to evaluate the effect of presowing treatments of aging, priming, GA3, prechilling and water imbibition, different temperatures and light quality during germination on germination of gourd (Lagenaria siceraria Standl.) seeds. Aging treatment with different temperatures and periods was done by the accelerated aging method. Priming using KNO3 and GA3 treatment for 24 hours were done at 100 mM and at 0.01 mM before a week prechilling. The germination tests using a week
prechilled seeds were done at 10, 20 and 30℃ on the condition of darkness, and also with blue, red, far-red light and darkness as light quality treatments. FR-yongjadaemok and FR-kunghap were used as test cultivars and their daily germination rates were measured at treatment levels. Germination rates were reduced in the seeds aged at 45℃ for 6 days. Prechilling showed the highest and fastest rate among the four presowing treatments but the two other presowing treatments had similar or less rates than water imbibition. Prechilling done before sowing enhanced the low vigor seeds, and accelerated the germination of cv. FR-kunghap at 20 to 30℃ and with blue, red light or darkness during germination although far-red light inhibited their germination
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KEYWORD
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Gourd, Germination, Seed treatments, Germination temperature, Light quality
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