Journal Article

Inheritance of Flower Color in Periwinkle: Orange-Red Corolla and White Eye

Y. Sreevalli, R. N. Kulkarni and K. Baskaran

in Journal of Heredity

Published on behalf of American Genetic Association

Volume 93, issue 1, pages 55-57
Published in print January 2002 | ISSN: 0022-1503
Published online January 2002 | e-ISSN: 1465-7333 | DOI: http://dx.doi.org/10.1093/jhered/93.1.55
Inheritance of Flower Color in Periwinkle: Orange-Red Corolla and White Eye

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The commonly found flower colors in periwinkle (Catharanthus roseus)—pink, white, red-eyed, and pale pink center—are reported to be governed by the epistatic interaction between four genes—A, R, W, and I. The mode of inheritance of an uncommon flower color, orange-red corolla and white eye, was studied by crossing an accession possessing this corolla color with a white flowered variety (Nirmal). The phenotype of the F1 plants and segregation data of F2 and backcross generations suggested the involvement of two more interacting and independently inherited genes, one (proposed symbol E) determining the presence or absence of red eye and another (proposed symbol O) determining orange-red corolla.

Journal Article.  2536 words. 

Subjects: Genetics and Genomics

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