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Project 18-029C Evaluation of citrus rootstock response to HLB in large-scale existing field trials Principal Investigator (PI): Dr. Ute Albrecht (SWFREC)

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Presentation on theme: "Project 18-029C Evaluation of citrus rootstock response to HLB in large-scale existing field trials Principal Investigator (PI): Dr. Ute Albrecht (SWFREC)"— Presentation transcript:

1 Project C Evaluation of citrus rootstock response to HLB in large-scale existing field trials Principal Investigator (PI): Dr. Ute Albrecht (SWFREC) Co-PIs: Dr. Jude Grosser, Dr. Fred Gmitter (CREC)

2 Large-scale ‘Hamlin’ and ‘Valencia’ Rootstock Trials
Site 1: Basinger (Highlands County) Site 2: Lake Wales (Polk County) Scion - Rootstocks: Hamlin (52 rootstocks) Valencia (48 rootstocks) Date planted: September 2015 Plot size: 8 trees Replications: mostly 6 or more Spacing: 8 x 25 ft. (Basinger) and 8 x 22 ft. (Lake Wales)

3 UF Rootstocks Rootstock name Parentage Origin 6058 + 2071-02-2
SO+Rangpur x Cleopatra+Trifol. Or. Florida (UF) Amb + Benton Amblycarpa + Benton citrange Amb + Czo Amblycarpa + Carrizo citrange Changsha (UFR-6) Changsha + Trifol. Or. 50-7 Changsha + Benton Changsha + Benton citrange Green 2 (UFR-17) Nova+HBPummelo x SO+Carrizo Green 3 Green 7 Orange 13 Nova+HBP x Cleo+Arg. Trifol. Or. Orange 14 Orange 15 (UFR-3) Orange 19 (UFR-4) Nova+HBP x Cleo+Arg.Trifol. Or. Orange 3 (UFR-1) Orange 4 (UFR-2) Sorp + Sh-991 SO+Rangpur x Cleo+Trifol. Or. Wgft White grapefruit + Trifol. Or. 50-7 White 1 Nova+HBP x Succari+Arg. Trifol. White 3 White 4 (UFR-5) B SOUR SO B11R3T27 Flying Dragon x Duncan B11R4T1 Flying Dragon x C. obovoidea B11R4T13 B11R4T18 B11R4T22 N40R1T18 Flying Dragon x (Clementine x Duncan) N40R1T2 Duncan x DPI 9-6 N40R1T25 N40R1T26 N40R2T19 N40R2T21 N40R2T24 N40R2T26 N40R3T26 N40R3T27

4 Other Rootstocks Rootstock name Parentage Origin C-146
Sunki Mandarin x Swingle California (UCR) C-22 Bitters Sunki x Swingle C-54 Carpenter Sunki x Swingle C-57 Furr Sunki x Swingle FA-13 Cleopatra x Trifol. Or. Spain (IVIA) FA-2344 [02034] Troyer x Cleopatra FA-31 FA-418 Troyer x Common Mandarin FA-5115 King Mandarin x Trifol. FA-5128 King Mandarin x Trifol. Or. FA-517 FA-5 FA-74 V-17 Volkamer lemon x Trifol. Or. Swingle Duncan x Trifol. Or. Florida USDA US-897 Cleopatra x Flying Dragon Trifol. Or. SO = Sour Orange; Trifol. Or. = Trifoliate Orange; HBP = Hirado Buntan Pummelo; IVIA = Instituto Valenciano de Investigaciones Agrarias; UF = University of Florida; UCR = University of California, Riverside; USDA = United States Department of Agriculture. The “+” indicates somatic hybrid (allotetraploid) rather than diploid sexual hybrid.

5 Hamlin Basinger Dec 2018 Yield
Only rootstocks with a minimum replication of 3 are shown. Average yield in trial: 13.6 pounds/tree

6 Hamlin Lake Wales Jan 2019 Yield
Only rootstocks with a minimum replication of 3 are shown. Average yield in trial: 26.0 pounds/tree


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