Experiments were carried out to investigate the effects of day length and temperature on the flower bud differentiation and growth in Chinese chives (Allium tuberosum R.) and a wild plant of Allium species.
1. These two kinds of plant were seeded on April 27, and long day treatment began on November 1 at the temperature of 23∼28℃. After 101 days of treatment, on February 9 in the next year, Chinese chives reached at pre-bolting stage while the wild plant did not initiate even flower-bud differentiation. Under the short day length of about 10 hours of natural illumination at 13∼18℃, the wild Allium plant did not initiate flower-bud differentiation.
2. The growth of both kinds were stimulated by illumination for 17 hours as compared with 10 hours illuminating. Under the long day condition, relatively cool temperature of 13∼18℃ was favorable for growth as compared with 23∼28℃.
3. Environmental conditions for flower-bud differentiations were different in these two species, but responses of growth to day length and temperature were similar.
4. The research for origin and taxonomy of this wild plant, which seems to be an unrecorded species, must be proceeded in detail for the future, and on the basis of experimental results until now, as reported in previous and present papers, we propose the Korean local name `Pabuchu´ for this wild plant.
|