| Summary: | 碩士 === 國立臺灣大學 === 園藝學研究所 === 100 === This thesis aims to investigate the effect between growth and flowering on Lycoris aurea by the temperature. By the non-destructive technique, the MRI (magnetic resonance imaging) and the CT (computed tomography ) technique, the internal buds of Lycoris aurea are observed. In order to establish the data on flowering regulation of Lycoris aurea in Taiwan，the bulbs on different temperatures and durations are focused.
Bulbs of Lycoris aurea in the dormant period are storage at 10℃,20℃,25℃ and 30℃，20℃is the most suitable for the growth of bulbs. And 10℃, 25℃, and 30℃ are the followings. Higher and lower than 20℃make the growth of bulb buds slow and the longer time of dry storage makes the leaves yellow and break.
Compared with these three techniques of MRI (magnetic resonance imaging) and CT (computed tomography )technique and X-ray, X-ray cannot detect the flower buds and leaf buds. However, MRI and CT can distinguish the flower buds and leaf buds exactly. In addition, MRI has the most significant feature, water content within the observatory, but the price of MRI is expensive and the scan time is long. As a result, CT is the best choice to distinguish the flower buds and leaf buds, because of its lower price and shorter scan time.
The flower buds of bulbs at 20℃ are bolting 6.12days earlier than those at the green house via CT.
By the flower buds and leaf buds of bulbs via CT, the flower buds and leaf buds at 20℃in different days are bolting and drawn earlier than those at the greenhouse. In addition, the effect of bolting and drawn is significant on August 16th.
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