Re: Re: Species Fertility


 

As far as I know, if you grow a batch of seeds from a single flower of a wild-collected onco species, the resulting siblings will produce seeds if crossed with each other but not if selfed. They're obligate outcrossers, possibly something to do with high genetic diversity being an advantage in a harsh environment.

Sean Z

On Fri, Jan 23, 2015 at 11:07 PM, Chuck Chapman i*@aim.com [iris-species] <i*@yahoogroups.com> wrote:
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Are the clones that are interfertile pure species of the same species?

Chuck Chapman

-----Original Message-----
From: Sean Zera z*@umich.edu [iris-species]
<i*@yahoogroups.com>
To: iris-species <i*@yahoogroups.com>
Sent: Fri, Jan 23, 2015 8:50 pm
Subject: Re: [iris-species] Re: Species Fertility

Â
All Oncos are believed to be self-incompatible. A single clone is
notÂfertile when selfed, but any two Onco clones are interfertile. All
the species are diploid and readily produce fertile hybrids when
crossed. I've personally tried selfing paradoxa, back when it was the
only Onco I had, with no success. It has since happily hybridized with
other species.

It looks like the degree of incompatibility may vary with relatedness.
This study found a higher fruit set (and seed per fruit count)
hand-crossing between two populations of the same species versus
crossing within a single population.
http://envgis.technion.ac.il/publications/segal2006.pdf


Sean Z
Zone 6a
SE Michigan



On Fri, Jan 23, 2015 at 3:28 PM, Chuck Chapman i*@aim.com
[iris-species] <i*@yahoogroups.com> wrote:
Â
That is good to know.

Do you have some specific species examples? Fertility between clones
of same species but not with self?

Chuck Chapman

-----Original Message-----
From: Sean Zera z*@umich.edu [iris-species]
<i*@yahoogroups.com>
To: iris-species <i*@yahoogroups.com>
Sent: Fri, Jan 23, 2015 3:19 pm
Subject: Re: [iris-species] Re: Species Fertility

Â
The dozens of Oncocyclus species are largely not self-compatible.

Sean Z


On Fri, Jan 23, 2015 at 2:47 PM, Chuck Chapman i*@aim.com
[iris-species] <i*@yahoogroups.com> wrote:
Â
Are there any bearded species that have self infertility?

Chuck Chapman

































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