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United States Department of Agriculture

Agricultural Research Service

Title: Inheritance of a White Flower Mutant in Kenaf

Authors
item Cook, Charles
item Banuelos, Gary

Submitted to: Journal of Heredity
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 3, 1996
Publication Date: N/A

Interpretive Summary: In 1990, at a winter seed increase nursery in Mexico, a single kenaf plant with smaller than normal, white colored flowers was observed and selected from PI 324922 (Iran). A study was then initiated to determine the mode of inheritance of the mutant white flower trait. Crosses were made between a typical white flower mutant and two normal, yellow flowered kenaf cultivars. Segregation ratios of flower color fit a 3:1 normal/mutant ratio in F2 progeny and 1:1 normal/mutant ratio in test cross progeny. Results indicated that the mutant white flower phenotype was controlled by a single recessive allele, designated wf. This white flower genetic stock should be useful as a genetic marker in linkage studies and in studies of floral color in kenaf.

Technical Abstract: A single kenaf plant with smaller than normal, white colored flowers was observed and selected from PI 324922 (Iran) in 1990, at a winter seed increase nursery in Mexico. Subsequent plantings of the mutant plant resulted in a homogeneous population of white flowered plants, designated as PVWF-90. To determine the mode of inheritance of the mutant white flower trait, crosses were made between PVWF-90 and two normal, yellow flowered kenaf cultivars, Tainung 2 and 117. Segregation of flower color fit a 3:1 normal/mutant ratio in F2 progeny and 1:1 normal/mutant ratio in progeny resulting from a single backcross to PVWF-90. The mutant white flower phenotype, which is described for the first time, was controlled by a single recessive allele, designated wf. Because the white flower character is qualitatively inherited by a single, recessive gene and is easy to identify visually, it should be valuable as a genetic marker for linkage studies and investigations of floral color in kenaf.

Last Modified: 10/1/2014
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