Abstract

Phenotypically distinguishing between tan and pink peanut (Arachis hypogaea L.) testa color can be difficult. Genetic separation was attempted by testcrosses with homozygously recessive red testa genotypes (r₂r₂, r₃r₃). The recessive red testa color was found to differ from all of the following pink and tan cultivars: Sunbelt Runner, Southern Runner, Starr, Toalson, and the tan colored Krinkle-leaf genotype (F₁F₂D₁D₂r₁) by only one of the two recessive red loci. Even though these results show that testcrossing to recessive red genotypes is not a viable approach for discerning tan versus pink testa color, it does suggest that several peanut cultivars already carry one recessive red gene.

Full Article Available as PDF only - Use Download Feature

Keywords: Arachis hypogaea L, Groundnut, seedcoat color inheritance, Cultivars

How to Cite:

Branch, W. & Holbrook, C., (1991) “A Note on Testcrosses Between Tan or Pink Testa Color and Recessive Red Peanut Genotypes¹”, Peanut Science 18(2), p.109-110. doi: https://doi.org/10.3146/i0095-3679-18-2-12

Author Notes

¹Contribution of the University of Georgia, College of Agriculture and the U.S. Department of Agriculture, Agricultural Research Service.