ISHS Acta Horticulturae 620: XXVI International Horticultural Congress: Asian Plants with Unique Horticultural Potential: Genetic Resources, Cultural Practices, and Utilization
EFFECTS OF COLD AND GA3 TREATMENT ON FLOWERING OF EIGHT PERENNIALS NATIVE TO KOREA |
| Authors: | J.S. Song, C.S. Bang, Y.D. Chang, H.T. Jang, J.S. Lee |
| Keywords: | potted plants, native perennials, forcing, cold requirement |
| Abstract:
The effect of time of transfer from outdoors to the greenhouse, cold treatments, and gibberellic acid (GA3) on growth and flowering of eight perennials, Hylomecon hylomeconoides, Dicentra spectabilis, Hepatica asiatica, Caltha palustris var. membranacea, Pulsatilla koreana, Primula sieboldii, Adonis amurensis, Aquilegia flabellata var. pumila native to Korea, was investigated. H. hylomeconoides, D. spectabilis, H. asiatica, C. plaustres var. membranacea, P. sieboldii, and A. flabellata var. pumila had a cold requirement to flower. Hylomecon hylomeconoides required more than 60 days of cold treatment at 2°C for flowering. However, D. spectabilis, H. asiatica, and C. palustris var. membranacea required longer than 30 to 45 days at 2°C. Cold requirement of seven species except for D. spectabilis was substituted by soaking roots in 200 mg•L-1 GA3 solution before cooling but was partially substituted in H. hylomeconoides, H. asiatica, P. sieboldii, and A. amurensis when GA3 treatment was given after cooling. With D. spectabilis, GA3 treatment, however, did not substitute cold treatment regardless of treatment times. | |
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