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KMID : 0903619980390020140
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Journal of the Korean Society for Horticultural Science
1998 Volume.39 No. 2 p.140 ~ p.144
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Effects of Seed Treatment with Triazole Chemicals on Emergence , Seedling Growth , and Adventitious Rooting of Gourd
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Abstract
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This study was conducted to investigate the effects of various plant growth regulators on the gourd (Lagenaria siceraria Standl) seedling characteristics and to develop methods of producing healthy seedlings and rootstocks for easy grafting and efficient handling. When the seeds were treated with triazole chemicals, the effects on emergence, seedling growth, and rooting of cuttings from treated seedlings, and subsequent plant characteristics were examined. Triazole chemicals were effective in suppressing the hypocotyl elongation and increasing the hypocotyl diameter. In general, the higher the concentrations applied, the more severe the retarding effect resulted. The seedlings treated with hexaconazole showed normal rooting behavior when the cut seedlings were rooted in vermiculite. However, considerable inhibition of rooting was observed in the seedlings having severely dwarfed hypocotyls, which was caused by higher concentrations of paclobutrazol and uniconazole. Among the tested triazole chemicals, hexaconazole was most suitable for practical use because of its consistent effects and short persistence characteristics.
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