Hey all! I'm interested in converting a population of bicolor Tuxpeno and a population of Silver King Dent corn to a uniform orange/yellow semi-dent by crossing each of them with a Cateto population, but in my experience there always seems to be a hint of white that is maintained on subsequent generations after such a cross. As such, I'm wondering if anyone here could provide me with some tips/methods on how to fully convert these populations?
White is genetically recessive. If both parents contribute yellow, the seed will of course be yellow. If one contributes yellow and the other white, the seed will still be yellow. Only if both are white do you get white. Because of that white can hide for generations, waiting for that random chance where it matches up from both parents. If a single kernel on an ear is white it tells you that the mother plant has the recessive white, and all kernels on all cobs of that plant carry the recessive gene but just that one kernel also inherited white from the father.
It's easy to breed for just white because you know white kernels do not have any secrete yellow genes lurking around unseen, but getting white out of yellow is a bit trickier. All you can do is decrease the probability of it by culling entire ears whenever a white kernel shows up. By starting with a bi-color and an all-white variety I expect it will take quite a lot of time and patience to completely eliminate it.
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keen101 (Biolumo / Andrew B.): Looking for Goldini Zucchini again. Thinking of setting up my own seed shop for OSSI varieties in the future.
Apr 2, 2022 3:58:57 GMT -5
gratefulseedsaver: I have Goldini seeds. email@example.com
Oct 8, 2022 18:46:12 GMT -5
wilscase: Hello all. My name is Casey Wilson. I'
Oct 18, 2022 21:31:32 GMT -5
wilscase: I'm a graduate student at Oregon State and have been working with populations segrgating for different color genes such as the B gene in Cucurbita. I'm curious if anyone has experience with crosses in Cucurbita maxima between grey blue types and orange?
Oct 18, 2022 21:33:14 GMT -5
wilscase: I have been backcrossing to the grey parent for 4 generations and have finally selfed the heterozygotes (for the Bmax gene) the populations have segregated for diffuse bicolor (pink/blue, orange green), blue green, blue, green, pink (salmon) and orange
Oct 18, 2022 21:36:29 GMT -5
wilscase: The genes involved are Bmax and bl. I have observed that Bmax is incompletely dominant to wild type (green). I have read that bl is incompletely recessive to Bl(wild type). I'm curious if anyone else has observed the behavior of Bmax in a grey/blue type
Oct 18, 2022 21:38:28 GMT -5
wilscase: It appears that bl and Bmax are interacting to produce different shades of salmon and pink.
Oct 18, 2022 21:38:52 GMT -5
wilscase: I'm also interested in any other color genetics, especially the relationships between B and L genes. In the right background these genes can dramatically increase Carotenoids (vitamin A)
Oct 18, 2022 21:40:09 GMT -5
wilscase: I have lots of germplasm and would love to exchange anything that people are interested in
Oct 18, 2022 21:41:56 GMT -5