Re: MDBs continued (and an MTB question to boot.)
- To: Multiple recipients of list <i*@rt66.com>
- Subject: Re: MDBs continued (and an MTB question to boot.)
- From: m*@tricities.net (Mike Lowe)
- Date: Sun, 31 Aug 1997 18:24:53 -0600 (MDT)
Rusty asks...
>I am also interested in the "problems" that Mike Lowe mentioned when he
>talked about MTB's dipoid to tetraploid hybridizing.
A dip to tet cross giving an unreduced gamete is tough to accomplish -- and
a tet to dip is an even worse case scenario.
>I would like to try crossing Sindjka to modern irises, and hopefully get a
>>modern version. Aside from the time it takes to include those genes in a
>line
>of fertile tets, what are the other problems???
Sindjkha (Sturtevant 18) has not been counted, however, it has many
characteristics of a tet. I have never found enough pollen to nail down my
conjecture. In the one cross I can find in the records, Sindjkha was the
pod parent.
Tetraploidy came certainly through the Amas --> Souv. de Mme. Gaudichau -->
Germaine Perthuis leg of the below cross:
Anne-Marie Cayeux (Cayeux 28) pod Sindjkha (Sturtevant 18)
pollen Germaine Perthuis (Millet 24)
but whether it was a lucky shot or a routine tet to tet cross is not known.
I would guess Sindjkha is VERY hard to set a cross on.
At any rate, Sindjkha (Sturtevant 18), is in the pedigree of our most
recent Dykes and not so far back as you would expect. It comes in 11
generations back, through Sultan's Robe (Salbach 45)
Best regards,
Mike, mikelowe@tricities.net -- http://www.tricities.net/~mikelowe/
http://www.worldiris.com
