flower bud initiation in Amaryllis and Nerine

Nathan Lange plantsman@comcast.net
Sun, 14 Jun 2015 11:43:35 PDT


Those are all excellent questions. I am waiting 
for someone much smarter than me to connect the 
dots and answer them because I know those answers 
are already available. It's pretty clear to me 
that the general timing of Amaryllis flowering 
can already be explained with the current 
literature on flower induction and development. I 
would much rather read someone else's insightful 
explanation than attempt to write one. Why are 
there so few floral biologists participating in 
these discussions? I seldom read insightful posts 
here on the topics of flower initiation or flower 
development, areas in which I have conducted both 
applied and basic research, written grant 
proposals and literature reviews, both flower 
induction and flower senescence. Where are all the floral biologists?

One of the many positive attributes of a group 
like this is that there are so many people here 
who have so much experience growing so many, many 
different genera under an incredible variety of 
circumstances from all over the world. The 
expertise where this group is not so well versed 
is the broad area of plant physiology, especially 
floral biology. That is not met as a criticism, 
just one person's observation of those who post 
messages here. This is truly not met to offend 
anyone here but I really think part of the reason 
so few floral biologists participate is that many 
who could offer much insight in this area see the 
Wiki or they see something like this most recent 
discussion on bloom-blooming-bloom Amaryllis, 
shrug, and move on to something else. Having once 
been in that world, I know this to be true. It's 
no different than what you think of the neighbor 
who plants marigolds and petunias in their front 
yard around their pink plastic flamingos and asks 
you if it looks better than last year's display. 
Okay, I still like some petunias but that is 
besides the point. The unfortunate result is 
there are no current floral biologists here to 
answer your questions and, worse yet, many here 
are now crowdsourcing the reinvention of the wheel and don't even know it.

Best Regards,

At 10:09 AM 6/14/2015, you wrote:
>Now that we know that the flowers of Amaryllis 
>belladonna and various Nerine which will bloom 
>this year began to be formed two years ago, it 
>occurs to me that maybe an understanding of what 
>time of year that begins to happen (and under 
>what conditions) might help us induce flowering 
>in these species. The "us" I have in mind are 
>those of us who live in climates in which these 
>plants are very stingy about blooming. For 
>instance, are the incipient bloom buds formed 
>during a period of otherwise inactive growth 
>(dormancy) or during a period of active growth? 
>During a period of low temperatures or high 
>temperatures? At what time of year does this 
>take place among wild plants? Is any of this 
>known and, if so, can any of you provide more 
>information?  Jim McKenneyMontgomery County, 
>Maryland, USA, USDA zone 7, just the sort of 
>place which might benefit from the information requested.

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