beckygardener said:You wrote, "If I cross 'White Temptation' with 'Gentle Shepherd' and all the seedlings are white-flowered like their parents then white flower is recessive."
Why would it be recessive? I would have expected the white trait to be dominant since both parents were white flowered.
beckygardener said:That is where my confusion about dominant vs. recessive comes in. Why would any white blooming children be considered a recessive gene if both parents are near-white and most of their other children seem to have near-white blooms (depending on what they were crossed with)? What would you consider to be their dominant color?
beckygardener said:So basically the majority of our hybrid daylilies came from red/orange ditch lilies (fulva), correct?
Which would make THAT color the dominant genetic color, correct? So that would indeed make a light yellow/near white daylily color recessive, not dominate. Or as you also said ... at the very least, it would make it an additive.
So for fulva descendents, the dominant color is always red?
Now what about a different species daylily like citrina with yellow blooms? If it was crossed with another, would the dominate color then be yellow for any seedlings?
I am trying to wrap my brain around dominant/recessive vs. the color being a specific characteristic. Is it that a particular daylily when crossed will often throw a specific color or pattern or ruffles or teeth?Sorry, no. Identifying which of the alternative values for a characteristic is dominant or recessive does not depend on the breeding behaviour of particular daylilies but on the breeding patterns shown by all daylilies for that characteristic.
If that shows up in most of the seedlings, it is considered a dominate trait?Sorry, no. Whether a specific value for a characteristic is dominant or recessive is determined by the results of specific crosses (the F1, F2, both backcrosses to the parents and the test of F3 families).
And recessive is the opposite in that it can show up but not as often or as likely?Sorry, no. The recessive characteristic must show up in the expected proportions in the appropriate crosses in the test (see above) and not show up in the other crosses.
beckygardener said:Is "red" the dominant color for ALL daylilies?
beckygardener said:Maurice - Thank you for your extreme patience in trying to clue me in about all of this.
Being the visual person that I am, I searched on YouTube for a video about Mendel's pea plant experiment. I found this video, which entertained me with a few laughs too. Is this video accurate in relevance to Mendelian genetics?
admmad said:@ausrpned
It is difficult to know what is happening genetically without more details.
1) What species are the plants?
2) Are they diploids, tetraploids or something else?
3) For any cross, what did all the other seedlings look like? What do the seedlings look like from other crosses?
The concepts of dominant (and recessive), codominance and incomplete dominance work best when the crosses are between inbred lines and in particular inbred lines that differ only in the same characteristic - that is, they have been made genetically identical except for that one characteristic. When the crosses are between two completely different lines (or strains, etc.) it becomes much more difficult to assign a simple label. Without more information, particularly what do the other seedlings from the same crosses look like, it is not possible to provide an explanation with reasonable confidence.
It is difficult to know what is happening genetically without more details.
1) What species are the plants?
2) Are they diploids, tetraploids or something else?
3) For any cross, what did all the other seedlings look like? What do the seedlings look like from other crosses?
admmad said:@ausrpned
Do you know the parentage of the female and male plants used in the cross?
admmad said:The concepts of dominant (and recessive), codominance and incomplete dominance work best when the crosses are between inbred lines and in particular inbred lines that differ only in the same characteristic - that is, they have been made genetically identical except for that one characteristic. When the crosses are between two completely different lines (or strains, etc.) it becomes much more difficult to assign a simple label. Without more information, particularly what do the other seedlings from the same crosses look like, it is not possible to provide an explanation with reasonable confidence.