ARS | Publication request: AN ALLOTETRAPLOID INHERITANCE OF WINE TESTA COLOR IN PEANUT.

Submitted to: Peanut Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: April 6, 2004
Publication Date: January 1, 2004
Citation: Pittman, R.N., Kirby, J.S., Banks, D.J. 2004. An allotetraploid inheritance of wine testa color in peanut.. Peanut Science. 31:51-54

Interpretive Summary: Wine-colored peanut seeds often appear in farmer's fields, and the off- color peanuts are unwanted by the shellers and manufacturers. The inheritance of wine skin color in cultivated peanuts was determined in a genetic study using tan and wine skin color genotypes in crosses. A new model was developed to explain the inheritance of wine-colored peanut seed. .Wine peanut seed can be greatly reduced if the peanut breeders use dominan tan genes for developing future cultivars.

Technical Abstract: Wine-colored peanut seeds originate as mutants and, later as segregates in farmer's fields and are an off-color and unwanted by shellers and manufacturers. This study was conducted to determine the inheritance of wine testa color by using tan and wine testa color genotypes in crosses. A new genetic model is presented to explain the inheritance of the wine- colored seed trait. The Tetragonia model, based on a 207:49 (tan to wine segregation pattern, best described the data and assumes two sets of paired genes representing two genomes and each set with at least one pair of homozygous recessive alleles necessary for expression of the wine-colored trait. The authors suggest using parents that are homozygous dominant at all four loci to help reduce the rate at which wine-colored seeds appear in farmer's fields.