Studies on the growth habit and control of flowering in Leucocoryne and other bulbous new crop.

鸡冠花是一种球茎植物，原产于智利，是一种极具吸引力的新型观赏植物。本研究对其生长习性进行了研究，并探讨了控制开花的方法。在2月份的开花和花茎采收期间，开始在鳞茎中启动次年开花所需的营养和花的微茎。当初级(1ﾟ)小花初始出现时，鳞茎中的进一步发育停止。在日本，休眠在10月中旬至下旬发生，休眠打破后才会再次开始发育。在11月下旬，当1ﾟ花序的1ﾟ花雌蕊完成时，下一个花序的最肉质的小花开始。休眠温度在20ﾟC到30ﾟC之间，以20ﾟC为最适。花序分化发生在20ﾟC和25ﾟC，因此，20ﾟC贮藏是打破休眠、促进花序分化的最佳条件。在我们的实验中，球茎在花开后3个月被收获，并在20ﾟC下贮藏，打破休眠需要4个月的时间，花序重新开始发育。球茎可以在20ﾟC下贮藏7个月，但15个月的贮藏时间太长，因为第一个花序死亡。这例死亡发生在8个月至15个月之间。与20ﾟC相比，25ﾟC条件下表现出花序发育，花序死亡延迟。此外，在打破休眠并开始花序分化后，如果鳞茎在5ﾟC或10ﾟC下贮藏2、4或6周，花序分化开始，开花天数减少。反之，金边莲在15-20ﾟC之间发生休眠和花序分化。

Lcucocoryne coquimbensis is a bulbous plant which originated from Chile and is an attractive new ornamental plant. In this study, the growth habit was studied and methods to control flowering were investigated.During the time of floral anthesis and flower stems harvested in February, the vegetative and floral mcristem for the following year's inflorescense is beginning to be initiated in the bulb. When the primary (1ﾟ) floret initial appears, further development ceases in bulb. Development does not commence again until dormancy is broken, which occurs in mid to late October in Japan. At that time when the 1ﾟ floral pistil of the 1ﾟ inflorescense is completed, which takes place in late November, the carliest floret of the next inflorescense begins. Similarly, 3 to 4 inflorescense develop.Dormancy is borken by temperature between 20ﾟC and 30ﾟC in which 20ﾟC is optimum. Inflorescecse differentiation occurs at 20ﾟC and 25ﾟC.Consequently, the storage at 20ﾟC is optimum to break dormancy and to accelerate the inflorescense differentiation. In our experiment, bulbs were harvested three months after flowers had reached anthesis and were stored at 20ﾟC.Four month were required to break dormancy and for the inflorescense to start development again.Bulbs could be stored for 7 months at 20ﾟC.But the storage for 15 months was too long as the first inflorescense died. This death occurred between 8 months and 15 months. Inflorescense development had been showed at 25ﾟC when compared to 20ﾟC,and death of the inflorescense was delayd.Further, the number of days to anthesis was reduced if bulbs were stored at 5ﾟC or 10ﾟC for 2,4 or 6 weeks after dormancy had been broken and infloresacense differentiation had started.On the contrary, for L.odorota, breaking of dormancy and inflorescense differcutiation occurs at temperature between 15 and 20ﾟC.