Shull, George Harrison (February 1910) Color inheritance in Lychnis dioica L. The American Naturalist, 44 (518). pp. 83-91.
Abstract
The purple color in Lychnis dioica L. is a compound character, produced by the interaction of three distinct and independent genes in a manner exactly analogous to the similar colors in Lathyrus, Matthiola, etc. The two types of purple color present in different individuals are a reddish and a more bluish-purple, the former being e hanged to blue by treatment with alkalies, and the latter changed to red by the addition of weak acids. The bluish or alkaline color is hypostatic to the reddish or acid color, this being the reverse of the condition found in all other plants containing similar series of colors which have thus far been reported, unless possibly an isolated statement should prove correct that in Primula Sinensis "blue is hypostatic to all the red shades." It is impossible to determine at present whether this. reversal of the relation between bluish and reddish anthocyan results from the occurrence of positive characters for both alkalinity and acidity, or whether only one of these exists as a positive character and the alternative color is produced when this positive color-modifier is in the heterozygous state, the latter situation involving the dominance of absence over presence. The rather wide fluctuation in the percentage of purpleflowered families resulting from the cross of heterozygous purple with white (i. e., supposedly DR x R), reported in a former paper, may have been due in part to the mixture of the ratios 3:1, 1:1, 3:5 and 1:3, all of which are expected Mendelian results, on the basis of present knowledge of the compound character of Lychnis colors. Crosses between white-flowered plants should, not infrequently, result in progenies of all purple-flowered offspring or of purple and white in the ratios 1:1, 3:5, or 1:3. These results have not yet been found, owing no doubt to the fact that my crosses between white and white have been almost invariably made between sibs in wholly white-flowered families.
| Item Type: | Paper |
|---|---|
| Subjects: | evolution |
| CSHL Authors: | |
| Communities: | Station for Experimental Evolution at Cold Spring Harbor |
| Depositing User: | Matt Covey |
| Date: | February 1910 |
| Date Deposited: | 15 Jan 2013 14:16 |
| Last Modified: | 02 Nov 2017 14:56 |
| URI: | https://repository.cshl.edu/id/eprint/26883 |
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