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 Post subject: For those of you who do your own crosses...
PostPosted: Fri Jan 08, 2016 7:02 am 
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Joined: Fri Sep 17, 2010 7:52 am
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Location: Oak Island, NC
A study completed last year showed that when exposed Kelpak (sold here as KelpMax), [url="http://kelpak.com/news/pollen.html"]pollen grain germination was enhanced by 60%, and the pollen tubes grew to 4x the length of untreated controls[/url].

Makes me wonder if some of the recalcitrant cultivars we occasionally see might be coaxed into better seed production, or if this might be a way to help overcome size inconsistencies when attempting crosses of drastically different sizes - pollen from small plant put on one with a very large/long ovary.

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Ray Barkalow, Orchid Iconoclast
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 Post subject: Re: For those of you who do your own crosses...
PostPosted: Fri Jan 08, 2016 9:47 am 
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That's interesting. Definitely might be worth trying. I wonder if the pollen plant should be sprayed during the period when buds are developing or if just treating the pollinia would work.

-R


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 Post subject: Re: For those of you who do your own crosses...
PostPosted: Fri Jan 08, 2016 11:59 am 
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Treating the pollinia? Are you thinking submerged in kelpmax? At what strength?

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 Post subject: For those of you who do your own crosses...
PostPosted: Fri Jan 08, 2016 12:40 pm 
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In their pollen-tube experiment, they dipped the grains in various solutions - 1:100, 1:250, and 1:500 - and all showed better tube growth than untreated controls.

Frankly, I don't know if that's worth trying, of if its better to just spray both of the plants a few days before pollination. If the latter, I would guess anywhere from 3-4 days to a week in advance, allowing the plant time to reach its metabolic peak.

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