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KMID : 0903619750160020225
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Journal of the Korean Society for Horticultural Science
1975 Volume.16 No. 2 p.225 ~ p.232
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Promotion of Low Temperature and Dark Germinating Potentiality in Red Light Treated Seeds of Zoysia Grass (Zoysia Japonica STEUD)
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Abstract
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This study was carried out to investigate the germination potentiality of Red light treated Zoysia grass seed (Zoysia japonica Steud) at low temperature and in dark, and to illustrate the cause of promotion of germination potentiality by tracing hormonal changes. The Red light effect was confirmed in the field and the seedling growth was examined.
The germinability of the light treated seed was better than that of the non-treated one, and its potential was more remarkable when the germination temperature lowered. Almost all light treated seeds germinated in 1-2 days after seeding in contrast with the relatively slow germination with non-treated seed. Light treatment showed high germination percent in dark as high as in the light.
When the seeds were irradiated with Red light, the ABA-like substance decreased, and a promotor which is assumed to be GA-like substance increased. In dormant state, non-light-treated seed, a strong inhibitor seems to exist in the region of Rf .6-.8, which is assumed to be ABA-like substance.
All of these Red light irradiation effects was confirmed in the field and the early stage growth was also better than that of the non-treated seed.
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