Mendelian proof for a gene-for-gene relationship between virulence of Globodera rostochiensis and the H1 resistance gene in Solanum tuberosum ssp. andigena CPC 1673.

Abstract

A virulent and an avirulent inbred line of G. rostochiensis were crossed to determine the genetics of virulence to the resistance gene HI of Solanunz tuberosum ssp.andigena CPC 1673.The 3:l segregation i n avirulent and virulent larvae of the FZ generation, obtained by selfing the FI, showed that virulence to the HI gene is controlled by a single major recessive gene.The virulence percentages of the FI generations agreed with this finding.Reciprocal crosses showed no evidence of sex-linked inheritance of virulence. WSUM Preuve mende7ienne d'une relation(( gne-pour-gne N entre la virulence de Globodera rostochiensis et le gne de rsistance Hl chez Solanum tuberosum ssp.