TSWV Resistance vs Tolerence

[tlcmd]

Recently received my 2010 Twilley Catalog which describes several TSWV RESISTANT varieties on page 55. But on page 56 there are several TSWV TOLERANT varieties listed, 3 of which are indeterminant.

Dr Randy Gardner at NC State University who has developed several varieties of TSWV resistant determinant varieties writes, "I think all the resistant and so called tolerant tomato varieties all have the same gene(Sw-5) fo resistance. I see some varieties that I know are TSWV resistant with the Sw-5 gene that are listed as either resistant or intermediate resistant."

My own interpretation of resistant vs tolerant is that the resistant varieties are harder to infect with the disease, but the tolerant varieties can become infected with it and continue to grow and produce.

Comments or experience with TSWV resistant vs tolerant varieties please. I'm selecting seeds for spring 2010 now.

Thanks,
Dick