Inheritance of red foliage in flowering dogwood (<Emphasis Type="Italic">Cornus florida</Emphasis> L.) |
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| Authors: | Phillip A Wadl Xinwang Wang Vincent R Pantalone Robert N Trigiano |
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| Institution: | (1) Department of Entomology and Plant Pathology, University of Tennessee, 205 Ellington Hall, 2431 Joe Johnson Drive, Knoxville, TN 37996-4560, USA;(2) Texas AgriLife Research and Extension Urban Solutions Center, Texas A&M University System, 17360 Coit Road, Dallas, TX 75252, USA;(3) Department of Plant Sciences, University of Tennessee, 2431 Joe Johnson Drive, Knoxville, TN 37996-4561, USA |
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| Abstract: | Flowering dogwood (Cornus florida L.) is an ornamental tree valued for its showy white, pink, or red spring bract display and red fall color. A “pseudo” F2 flowering dogwood population was recently developed from a honeybee mediated cross of ‘Cherokee Brave’ × ‘Appalachian Spring’.
The foliage color of 94 “pseudo” F2 plants segregated into green- and red- leaved phenotypes and was visually rated for color on five spring dates over 3 years
(2007–2009). Chi-square analyses of observed segregation of phenotypes indicated that a complementary gene interaction form
of epistasis controls foliage color with a 9:7 two gene ratio. We propose the symbols rl
1
and rl
2
for the genes controlling this trait. |
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