AG Genetics - Seed Color
- To: pumpkins@mallorn.com
- Subject: AG Genetics - Seed Color
- From: H* E* P*
- Date: Tue, 06 Apr 1999 17:13:23 -0700
>From Harold Eddleman
Mike N., does your data base already contain info on simple traits
seen in the parent for any of the AG fruits in your database?
If we decided to get serious about simple traits in AG we could
develop a form to be completed by the cooperating grower of each AG
plant. Corn and chicken breeders do that.
Dear Fellow AG Growers
Some Atlantic Giant seeds are TAN (brown) color and some are WHITE.
Does anyone know whether the genetics of this seed color is known? It is
not given on the CGC Gene List. If not known, this may be a simple trait
for which we could determine the genetics by pooling our info.
We would try to determine whether it is a singe locus and whether
brown or white is dominant. Since all the seeds in a fruit are the same
color we will have to have the seed color for many fruits. Are all TAN
seeds the same color or do different fruits have differing colors of
TAN?
During 1999 I plan to cross 750 McIntyre 1998 (white) X 690 Sproule
1997 (TAN seeds). I will then hope to follow the seed color of the
following generations. I will follow all traits that I can identify.
If white seeds are recessive then I know the McIntyre seed is t/t and
the Spoule seed is T/T or T/t. This is assuming these plants are diploid
and not polyploid. By courtesy of Mike N and Barb K, I have a
pedigree for both of the seeds I will plant.
The Tan seed has the ancestors shown below. Can you tell me the color
of the seeds which were found inside any one or more of these fruits? If
you know anything about the plant which grew one of these fruits, that
could lead to discovering the genetics of other traits. For example,
consider the plant which produced 941 Eaton 1997, it would be great to
learn that plant had purple leaves, white flowers, no hairs on vines and
leaves, no roots at the vine nodes, no lobes on leaves (entire margins),
red stems on each fruit, no side (axillary) vines, the word DILL on the
bottom side of every leaf, or anything else which might have a genetic
basis.
If there is enough interest, I will begin developing a form and
display it on my website. If you want to cooperate in this genetic study
you could print and complete the form for each plant you grow during
1999. It will take some time to develop such a form and the instructions
for it. We would begin by you sending me an email listing the AG mutants
(leaf colors, stem colors, etc) which you have seen.
Knowing the inheritance of such traits might be useful to AG breeders.
Sometimes genes affecting yield are on the same chromosome with a simple
visible trait. Corn and chicken breeders use such traits in selecting
parents for matings. Chemical assays can be used also. Chicken breeders
use blood types and plant breeders use enzyme assays since about 1955.
--------
What color seeds were found in each of these fruits?
--the proband is: (proband means the initial plant in a genetic study)
690 Sproule 1997 -- had TAN seeds
--parents of 690 Sproule 1997: (parents of proband)
941 Eaton 1996
1006 Greer 1996
--grandparents:
663 Eaton 1995
887 Orr 1995
680 Dill 1994
697 Ciliberto 1994
--g g
910 Nelson 1994 UOW
804 Zehr 1994
945.5 DeJong 1994
990 Bax 1994
792 Holland 1993
500.5 Dill 1989
502.5 Ciliberto 1991
722 Holland 1992
--ggg
740 Holland 1993
827 Holland 1992
636 MacDonald 1993
755 Craven 1993
721.5 Eaton 1993
836 Craven 1993
721.5 Eaton 1993
511 Woodward 1993
827 Holland 1992
722 Holland 1992
-- one plant unknown --
575.5 Dill 1988
821 Stellpflug 1990*
530 Gancarz 1989
575.5 Dill 1988
742 Waterman-Fisher 1991
You may send the info you have on the color of any these seeds to my
E-address below. I will keep you posted. I will display the incoming
data on a web page which you can find via my index page URL below. I
will begin the page when info comes in.
If you have any other comments about the above seeds such as leaf
color and shape, etc. I would like that info.
--
Harold Eddleman Ph.D. Microbiologist. i*@disknet.com
Location: Palmyra IN USA; 36 kilometers west of Louisville, Kentucky
http://www.disknet.com/indiana_biolab/pk.htm
---------------------------------------------------------------------
To sign-off this list, send email to majordomo@mallorn.com with the
message text UNSUBSCRIBE PUMPKINS
