This study was conducted to find out the process of the flower bud differentiation and its development of the five species of the genus Lycoris in Korea.
The results obtained are as follows:
1. The flower bud differentiated from April to early May L. aurea and L. squamigera were the first to differentiate (April 3rd) and L. radiata was the last (May 1st).
2. Bracts were formed one or two weeks after the beginning of flower bud differentiation. The inner parts of bract differentiated and developed into several florets one week after the bract formation. Each floret has 6 inner and outer petals, which developed into stamens. The inner carpel of stamen reached the pistil formation stage 5 weeks after bract formation.
3. L. aurea was the first to form pollen(around June 26th), and L. radiata was the last (around August 18th), L. koreana and L. spp. (A) formed pollen around late July.
4. Flowering appeared one month after pollen formation. It was largely divided into two types. One is L. squamigera type (L. aurea, L. squamigera, L. koreana, L. spp. A) which bloomed in July and August, and the other is L. radiata type (L. radiata) which bloomed in September and October.
5. Leaf formation began simultaneously with the beginning of flower bud differentiation and ended in the mid-September. The growing point of nutrient bud, which was formed at the axil just below the growing point of apex, developed into leaf. The number of leaves which were formed within the bulb was 5 in case of L. radiata and 9 to 13 in case of the other species.
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