Linkage between loci controlling nodulation and testa variegation in peanut

Abstract

Linkage of loci controlling nodulation (N1) and testa variegation (V) was studied for cultivated peanut (Arachis hypogaea L.). The lines M4-2 (nonnodulating, variegated; VVn1n1n2n2N 3N3) and UF 487A (nodulating, nonvariegated; vvN1N1n2n2N 3N3) were used as parents in the crosses M4-2 × UF 487A, M4-2 × (UF 487A × M4-2), and their reciprocals. Individual plants were evaluated for nodulation and testa variegation in the F1, F2, F3, F1BC1, and F2BC1 generations. Data indicate that the N1 and V loci are linked with calculated crossover percentage of 7.1%.