Lycoris propagation

James Waddick
Tue, 09 Aug 2005 13:34:49 PDT
Dear friends;
	I have recently intensified my research into propagation of 
Lycoris by vegetative means. I have come across two studies that I 
would like to summarize since I found both very interesting:

	'Propagation of Bulbous Ornamentals by simple culture of bulb 
scale segments using plastic vessels' by Y Yanagawa, Kyoto University 
Acta Horti. 673 ISHS 2005

	The author used 26 species of Liliaceae and Amaryllidaceae, 
but I will relate only in regard to Lycoris. Single and twin scale 
segments were made of L. sprengeri and placed in either 1 gall 
Ziploc* bags or 4 cup Glad* disposable containers. They were filled 
with 800 ml(2 cups)(bags) or 350 ml (1 3/4 cup)(containers) of 
vermiculite and 80 ml ( 1/4 cup) of ionized water. Up to 50 segments 
were put in each container and these were sealed and stored at 25 C 
(78F) for 12 weeks in the dark. Findings:
	Larger segments produce more bulblets. But more and smaller 
bulbs resulted from single scales in total.
	Bulblets were produced only from near the basal plate section.
	Containers produced a higher percentage of bulbs than bags.
	Twin scale segments produced bulblets around 70%; single 
scale about 40% and without a basal plate none were produced.
	Please note conversions of volume and temp are approximate only.

	The second  article 'Effect of different bulb sections on 
Lycoris bulblet multiplication by chipping' by Amico Roxas, et al 
(all Italian) Acta Hort517 ISHS 2000

	The authors used 2 species of Lycoris and divided bulbs into 
1/4, 1/8, 1/16 ths and planted in plastic boxes with 50% peat and 50% 
perlite. There are many detailed charts showing the rate of bulblet 
production, growth, root initiation and more. In summary they found 
that larger segments produced more and large bulblets (by weight and 
circumference. Mother bulbs when chipped produced from 5.2 to 7.2 
bulblets in 6  months.
Bulbs cut into 1/4 produced fewer bulbs than bulbs cut into 1/8, but 
they were larger and 'marketable' in 2 - 3 years. These bulblet 
production rates compared to that of Narcissus

	I had until these article  not seen confirmation that Lycoris 
responded to propagation by cutting into segments or bulb scales. 
Although the results are obvious, the details provide an easy method 
to follow. There are still questions such as when is the best time of 
the year to cut bulbs?

	Hope you find the info of interest.		Jim W.

* Glad and Ziploc are trademarks and used just for convenience. The 
articles contain far more detail especially in regard to use of 
fungicides and details of the method. These articles should be 
available at any large university library.

Dr. James W. Waddick
8871 NW Brostrom Rd.
Kansas City Missouri 64152-2711
Ph.    816-746-1949
Zone 5 Record low -23F
	Summer 100F +

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