Re: HYB: self incompatibility (was PHOTOS striped standard MTB see...
- Subject: Re: HYB: self incompatibility (was PHOTOS striped standard MTB see...
- From: firstname.lastname@example.org
- Date: Tue, 02 Jun 2009 22:23:20 -0400
You are quite right Anner!
Some iris have these self incompatible genes and some don't.
I have made a large number of self crosses and a good number take. I
havn't kept track, but it isn't too much different in terms of
percentage takes then regular crosses. If you look in the R&I books you
will see lots of sib crosses. Sib to sib crosses would have a a lot of
the incompatibility problems that selfing would have, so the takes show
that the self incompatibility gene is not likely present in those
plants. A good number of bee pods turn out to be self crosses
By the way, I made 25 crosses today ( a lot of SDBs have damaged blooms
from late frosts and over winter damage, so not many plants to choose
from) and five of those were self crosses. Sometimes I self good
seedlings just to check on presence of self incompatibility genes.
Date: Tue, 2 Jun 2009 08:05:02 EDT
Subject: Re: [iris] Re: HYB: self incompatibility (was PHOTOS striped
In a message dated 6/1/2009 9:36:07 PM Eastern Daylight Time,
don't know if it's the right system for bearded irises, but I've read
that in some other plants, the pollen won't grow down the styles if it
has an incompatibility gene that matches one of the incompatibility
genes that the pod parent has. The plants own pollen would always have
match and so would always be not-compatible. Offspring would have at
least half of their pollen matching (and so those pollen grains would
incompatible), sometimes all would be incompatible. This system helps
ensure that outbreeding to unrelated irises will occur.
In some irises, self-incompatibility arises at least in part from the
plant's own pollen and own stigmatic lip simply not being ready
a factor which conceivably may, if only in part, be genetically
I am reliably informed this is the case with certain Juno species,
primary mode of self-perpetuation, as it were, is bulblets, rather
Richmond VA USA
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