Re: adjusting daylength (to flower horemanii)

• To: Aquatic-Plants at actwin_com
• Subject: Re: adjusting daylength (to flower horemanii)
• From: nfrank at nando_net (Neil Frank)
• Date: Sun, 17 Mar 96 07:49:11 EST
• Cc: hak at ozemail_com.au, bhansen at ozemail_com.au, S.Winterton at ctpm_uq.edu.au

For anyone who has experimented with artificial light to change daylength in
order to flower plants (as per discussion for E. horemanii), how important
is the annual cycle?

- When a short day (e.g. 8-hours) is needed for flowering, is a
complementary long day followed by transition periods needed?

- Or, can a short day immediately follow a 12-hour day?

- In either case, for how many weeks is the short day needed to trigger the
response?

- And what about concomittant changes in temperature, light intensity, etc.


Neil Frank                 Aquatic Gardeners Association,  Raleigh NC

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