Table 1.

Resistance (R) genes in tomato and corresponding effectors in Fusarium oxysporum f. sp. lycopersici (Fol).

R gene*	Chromosome†	Introgressed from:	Effector recognized	Alternative name of effector
I	11	Solanum pimpinellifolium	Avr1	Six4
I‐1	7	Solanum pennellii	Avr1	Six4
I‐2	11	Solanum pimpinellifolium	Avr2	Six3
I‐3	7	Solanum pennellii	Avr3	Six1

^* Additional loci in S. pennellii conferring resistance to Fol have been mapped by Sela‐Buurlage et al. (2001).

^† Mapping of I genes is summarized in Huang & Lindhout (1997).