All I need is the land and I would try . So I guess It is up to you . "Pink brandywine" has some resistance to potatoe blight and it is a heirloom. Try "Floramerica tomatoes" they have 17 Resistances .

This table might help. IT WAS BETTER IN ITS ORIGINAL POST. THIS FORUM CHANGED IT WHEN IT POSTED . ALSO:
Vinson Watts Tomato: Offered for the first time five years ago, this tomato has proven to be quite popular with many people. Prior to his death in March, 2008, Vinson Watts had improved his namesake tomato for fifty-two summers. The original seed was from Lee County, Virginia and given to him by his work supervisor, Wilson Evans, at Berea College in 1956. Those interested in the story of his tomato can look it up on the internet since several articles in newspapers and magazines have been written about Watts and his tomato. The tomato is a large pink tomato flavored with an excellent balance of sugars and acids. It is the most disease resistant tomato I know of-the result of 52 summers of careful selection for flavor, texture, and disease resistance.

Tomato: Disease Resistance Table

KEY to the table
Seed Companies:

A = Asgrow; B = Burpee; H = Harris Moran; HS = Harris Seeds; HO = Hollar; J = Johnny's; P = Peto; R = Rogers RO = Rohrer; S = Sakata; SW = Seedway; SI = Sieger; ST = Stokes; SU = Sunseeds

Specifics:
H = Hybrid; OP = Open Pollinated

June 2009
TomatoVariety Resistance to Diseases and Physiological Disorders
alternaria alternaria stem canker Bacterial Speck Bacterial Spot Black Rot Corky Root (Rot) Downy Mildew (aka Late Blight) Early Blight Tomato Blight Fruit Soft Rot fusarium crown rot fusarium Crown Rot Fusarium wilt Fusarium Wilt 1 Fusarium Wilt 2 Fusarium Wilt 3 Gray Leaf Spot Late Blight Leaf Mold Fulvia Blight powdery mildew Nematode Root Knot Nematode Stemphyllium Southern Bacterial Wilt Bacterial Wilt Spotted Wilt Virus Tobacco Mosaic Virus Tomato Mosaic Virus Tomato Spotted Wilt Verticillium Wilt Verticillium Wilt 1 Verticillium Wilt 2 Yellow Leaf Curl Virus Blossom End Rot Cracking Cold Heat Sunburn Seed Company
A ASC BSp BS BR CoR DM EB TB FSR FCR CR F F1 F2 F3 GLS LB LM FB PM N RKN ST SBW BW SWV ToMV TMV TSW V V1 V2 YLCV BER C Cld H SB
Abe Lincoln X X X X X X TT
Abuelo X X X X X R
Agriset 334 X X X X X SW
Albatross X X X X R
Amelia VR F1 X X X X X X X X HM, HS, SW
Apero X X X X JO
Applause X X X X X SI, SW, TT
Applegate X X X X X TR
Arbason X X X X X X X H, JO, SI
Atomic X X X X X SA
Bambino X X X X TR
Barbarian F1 X X X X X X HM
Basket Vee X X X ST
Beaufort F1 X X X X X JO
Beefmaster X X X X X X X RU, ST, SW, TT
Bella Rosa X X X X X X X RU, SA, SW
Better Boy F1 X X X X X HS, RU, ST, SW, TT
Better bush X X X TT
BHN-189 X X JO
BHN-268 X X X RU, SI, SW
BHN-410 X X X X RU, SI
BHN-411 X X X X X X SI, SW
BHN-444 X X X X X X JO, SI, TT
BHN-543 X X X X RU, SW
BHN-586 X X X X X SI
BHN-589 X X X X X SI, SW
BHN-602 X X X X X SI, SW
BHN-640 X X X X X SI
BHN-641 X X X SI, SW
BHN-665 X X X X JO
BHN-669 X X X RU
BHN-685 X X X X X SI, SW
BHN-762 X X RU
BHN-768 X X RU
BHN-783 X X X X RU, SI
BHN-785 X X X RU, SW
BHN-826 X X JO
BHN-871 X X X RU, SI
BHN-876 X X X RU
BHN-882 X X X X X X RU
BHN-901 X X X X X SW
Big Beef X X X X X X X X X HS, JO, RU, SI, ST, SW, TR, TT
Bigdena X X X X X R
Big Bite X X X X X TT
Big Boy X X SI, TT
Big Zac TT
Biltmore X X X X X X X SI, ST, SW, TT
Black Prince X X JO
Bobcat X X X X R
Bolseno X X X JO
Box Car Willie X TT
Buffalo X X X X JO
Burpee Supersteak F1 X HS
Bush Celebrity X X X X X X X TT
Bush Champion X X X X X TT
Bush Early Girl X X X X X X X HS, TT
Bush Goliath X X X TT
Cabernet X X TR
Cambell's 1327 VFA X X X X TT
Camelia X X X SI
Carnival X X X X X X X TT
Carolina Gold X X X X X R, RU, SI, SW, TT
Caruso X X X TT
Celebrity F1 X X X X X X X X HS, JO, RU, SI, SW, TR, TT
Celebrity Supreme X X X X X X X RU
Champion X X X X TT
Champion II X X X X X X TT
Cherry Blossom X X X X X X X X X TT
Classica X X X X X TT
Clermon X X X X X R
Cluster Goliath X X X X TT
Cluster Grande X X X X TT
Cobra X X X X X X JO, SW, TR
Conestoga F1 X X HM, ST, SW
Corona Ps X X X X X X TT
Costoluto Volkov X X H, TT
Country Tast X X X TR
Crista F1 X X X X X X HM, HS, ST, SW
Cupid F1 X X X X X X X X HS, RU, ST, TT
Dafel X JO
Daiquiri X X X X SW
Delicious X X X TR, TT
Donata X OS
Early Cherry X X TR
Early Girl X X X RU, SW, TR, TT
Early Goliath X X X X X X TT
El Cid F1 X X X X X X HM
Empire X X X X X X TT
Escudero X X X HM
Estiva X X X X JO
Eva Purple Ball (DNS) TT
Fabulous X X X X X X X SW
Fantastic X X X TR, TT
Fantom X X X TT
Favorita X X X X JO
Finishline X X X X X X RO, RU, SI
First Ladies (DSN) TT
First Light X JO
Fletcher X X X X X X X SW
Floralina X X X X X X TT
Florida 47 F1 X X X X X X X X HS, RU, SI, ST, SW
Florida 7514 X X X X X RU
Florida 91 X X X X X X X RU, SI, SW
Gaint Valentine X X X X TT
Gardener's Delight X TT
Geronimo X X X X X X X JO, RU
Glacier X TT
Glamour X X ST
Gold Nugget X X TR
Golden Girl X X X X X TT
Golden Rave X X X HS, TT
Golden Sweet X X X JO
Goliath X X X X X X TT
Grandma's Garden X X X X SW
Grandma's Pick F1 X X X X SW
Granny Smith X X X X TT
Grapette Hybrid X TT
Great White Beefsteak X TT
Greenhouse 761 X X X X X X TS
Gremlin F1 X HM, SW
Growdena X X X X X X R
Halley 3155 X X X SI
Hard Rock X X X TT
Health Kick X X X X X X X TT
Heartland X X X X TT
Heinz 1439 VFA X X X X TT
Heinz 2653 X X TR
Hermosa X X X SA
HM 7864 F1 X X X X X X HM
Homestead X X TT
Homesweet X X X X X TT
Husky Cherry Red X X X RU, TT
Husky Red F1 X X X X X X HS, RU, TT
Hybrid 46 X ST
Imperial 643 X X X X X X X X SI
Italian Goliath X X X X X X TT
Jelly Bean Red X X X X X TT
Jelly Bean Yellow X X X X X TT
Jenny Hybrid X TT
Jet Star F1 X X X X HS, TT
Jetsetter X X X X X X TT
Jolly X TT
Jolly Elf X X X SI, SW
JTO-99197 X X X JO
Jubilee X HS
Juliet X X X HS, JO, TT
Jumbo VF X X X TT
Kada X X X X X TT
Keepsake X X X X X X X TT
Lola X X X H
Legend X TR, TT
Lemon Boy X X X X X RU, SW, TT
Linda X X X X X X RS, RU, SA
Lucky 1000 (DSN) OS
Lucky 2000 (DSN) OS
Manalucie FST X X X X TT
Mandarin Joy TT (Dis resis)
Manitoba X X TR
Manyel X X TT
Marcellino Hybrid X TT
Margherita X X TT
Marglobe Select VFA X TT
Mariana X X X X X X X X HS, JO, RS, RU, SI, SA, SW
Marion X X X TT
Marmande X X X TT
Marzano X TT
Matt's Wild X H
Maxifort X X X X X X X JO
Mini Charm X X X X SW
MiReina X X X X X R
MiRoma X X X X R
Momotaro X X TR
Monica X X X X X X X SA, SI, SW
Moskvich X JO
Mr. Ugly X X X X RU
Mt. Crest X X X RU, SW
Mt. Delight X X X TT
Mt. Fresh F1 X X X X HM, HS
Mt. Fresh Plus F1 X X X X X X HM, HS, RS, ST, SW, TT
Mt. Glory X X X X X HS, R, RU, SI, ST, SW
Mt. Pride X X X X X X TT
Mt. Spring X X X X X X R, RU, SI, SW, TT
Muriel X X X X X X X X X HS, RU, SA, SW
Navidad X RU
NC 50-7 X X New for OS
NC8276 X X X OS
New Girl X X JO
New Yorker X TT
Nico X X X X X X HM, SW
Niobe X OS
Northern Delight X X TR
Ofri X X X X X SW
Old Brook X X TT
Old Fashioned Goliath X X TT
Olivade X X X JO
Orange Paruche X X TR
Oregon Spring X X JO, TS, TT
Oregon Star X TR

Palenque X X X X SI
Panzer X X X X X X X X X R
Paragon X X JO
Park's Beefy Boy X X X X X TT
Park's Whopper X X X X X TT
Patio X X X X X RU, SI, TT
Patria F1 X X X X X HM, HS
Palomo F1 X X X X X HM
Pegaso F1 X X X X X HM
Peacevine X H
Phoenix X X X X X X RU, SI
Picus X X X X X X RU, SI, ST, SW
Pik Red F1 X X X X TT
Pilavy X X X X X X X R
Pilgrim X X X X X X TT
Pink Girl F1 X X X X HS, RU, SW, TT
Pink Vivi (DSN) OS
Pitenza X X X X RU
Plumty X X X X X R
Plum Crimson F1 X X X X HM, HS, SW
Polbig X X X X JO, SW
Pony Express X X X X X X X HM,HS, SW
Primetime F1 X X X X X HS
Primo Red F1 X X X X HM
Pruden's Purple X JO
Qualit X X X X X X TR
Qualit 21 X X X X X X RO
Qualit 23 X X X X X RO
Quick Pick X X X X TR
Rapsodie X X X X X R
Reba X X X X SA
Red Defender X X X X X X HM, HS, SW
Red Delight X X X X SA
Red Grape X X X X JO
Red Pride X X X X X SA, SW
Redline X X X X X R, SI
RFT 6153 X X X X SW
Rocky Top X X X X X R, RU
Roma VFN X X X X X X X H, HS, TT
Rutgers 39 X X X X X H, HS, TT
Sahel X X X X X X R
Samurai F1 X X X X X X X X HM
San Marzano X X X H, JO
Sapho F1 X X X X X JO
Scarlet Red X X X X X HM, HS, ST, SW
Scout X X X X R
Sebring X X X X X X X R, RU, SI, SW
Security 28 F1 X X X X X X HM, HS
Shady Lady X X X X X TT
Siletz X X X H, TS
Silverado F1 X X X X HM, TT
Small Fry X X X X X RU
Smarty X X HM, JO, SW
Solar Fire F1 X X X X X X X X X X X HM, HS, ST, SW, TT
Solar Set R X X X X TT
Sophya F1 X X X X X X X X X X X X HM, SW, TT
Soraya X X X X X X SW
STM 0225 X X X X SA
STM 5811 X X X X X SA
STM6701 X X X X SA
Striped Stuffer X TT
Stupice X TR, TT
Sun Cherry F1 X JO
Sun Gold X X X X X JO, TR
Sun King X X X X TT
Sun Start X X X X X RU
Sunbeam X X X X X X RU, SI, SW
Sunbrite F1 X X X X X HS, RU, SI, ST, SW
Suncherry Extra X X TT
Sunchief X X X X X HS, SW
Sunguard X X X X X X RU, SI
Sunkist F1 X X H
Sunmaster X X X X X TT
Sunny Goliath X X X TT
Sunoma X X X X X X X X X SI, ST, SW
Sunray X TT
Sunsation F1 X X X X X HS, SI, SW
Sunshine X X X X X HS, RU, SW
SunSugar X X X RU, TT
Super Bush X X X TT
Super Fantastic X X X TT
Super Marzano X X X X X X RU, TR, TT
Super Sweet 100 X X X HS, R, RU, SI, SW, TT
Supersioux X TT
Supersonic F1 X X X HS, TT
Supersteak X X X X SW, TT
Suzanne F1 X X X X X H
Sweet Baby Girl X X TT
Sweet Chelsea X X X X X X RU, SA, TT
Sweet Cluster F1 X X X X TT
Sweet Gold X X X SA
Sweet Hearts X X X X X HS, RU, SA, SI, ST, TR, TT
Sweet Million X X X X SA, ST, TR, TT
Sweet Mojo X X JO, ST
Sweet Olive X X JO
Sweet Orange X ST
Sweet Pie X TR
Talladega X X X X X X X R, SI, SW, TT
Thessaloniki X X TT
Toistoi X X X X TT
Tomande X X X X X TT
Tommy Toe X X TT
Torbay X X X SW, TT
Torero F1 X X X X X HM
Tormenta X X X X SW, TT
Toro F1 X X X X HM
Trinity F1 X X X X X HM
Trust X X X X X X JO, RU
Ultimate Opener X X TT
Ultra Girl X X X X ST
Ultra Sweet X ST
Ultrasonic X ST
Valley Girl X X X JO
Valleycat X X X R
Veeroma X X ST
Veronica X X X X X SA
Victoria Supreme X X X X X SA
Viva Italia X X X X X X X TR, TT
Window Box Roma X X X X X TR, TT
Wins All X TT
Wolverine X X X R
Yellow Mini X JO
Yellow Pear X X X X H, TR
Yellow Perfection X H
Zapata X X X X X X SW

I am searching for sources of seeds available to the home gardener which are resistant to the Tomato Yellow Leaf Curl Virus. I have encountered the initials TT as a source, but the keys never seem to say which seed company this is.
Do you know what it stands for? Also, if any of you have successfully grown TYLCV resistant tomatoes, I would love to have your input as to what varieties you like best. Thanks, Cheryl in Hawaii

Try this link :
http://vegetablemdonline.ppath.cornell.edu/Tables/TomatoTable.html
I suspect "TT" stands for "Totally Tomatoes seed company "