|
Post by raymondo on Mar 6, 2012 23:15:15 GMT -5
A few questions for the corn team:
1. If a flint/flour corn was pollinated by an se+ corn, would I see wrinkled kernels in the F1?
2. On a cob of Indian corn (multicoloured non-sweet type) planted among se+ corn there are numerous wrinkled kernels. Oddly though, only the white or yellow kernels are wrinkled. None of the coloured kernels appear to be. Is this just a truly amazing coincidence (it happened on a number of cobs) or is there something different about coloured versus yellow/white kernels?
Any help here much appreciated.
|
|
|
Post by DarJones on Mar 6, 2012 23:35:05 GMT -5
You probably have the su gene riding as a recessive in the flour corn. That would explain the shriveled kernels. It is possible that yellow or white kernels are linked to one of the 3 genes involved.
DarJones
|
|
|
Post by Joseph Lofthouse on Mar 7, 2012 0:52:50 GMT -5
I agree with Dar. Many of the flint/flour corn seeds that I have purchased, or that I see for sale at the grocery store or farm markets have been contaminated by sweet corn. The typical rate is around 1% to 3% of the cobs in the population. The offspring will have varying degrees of sweet kernels on them depending on what pollen was available... I love using cobs like that for my su/se/se+ breeding programs. I don't have to grow out as many F2 plants. My cherry flavoured sweet corn came out of a cob like that.
|
|
|
Post by raymondo on Mar 7, 2012 5:08:50 GMT -5
Ah, if I'd thought about it more ... se is a recessive allele so it would need two to show up as wrinkling. So next generation, I might perhaps see some wrinkling due to se.
Interesting to think that there's likely some su lurking in the Indian corn. I could use those wrinkled kernels elsewhere.
|
|
|
Post by 12540dumont on Mar 7, 2012 11:53:56 GMT -5
What about these? Attachments:
|
|
|
Post by Joseph Lofthouse on Mar 7, 2012 16:29:37 GMT -5
That's a pretty corn.... Too low resolution for me to see if there are wrinkled kernels, and I don't have magical zoom like they do on the detective shows.
|
|