No idea about the numbers, but yes, you can use a big population to keep a good amount of diversity. Usually you do selection on a landrace, trying to get a population fit for your conditions, and that also meat your goals. In other words, you cull most of what doesn't grow well for you, and what doesn't fit your selection criteria.
You could select with diversity in mind, taking seed from as many plants as possible, and making sure of taking seed of those that look different. You'll loose some genes, dilute others, but most will stay there somewhere.
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. firstname.lastname@example.org
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