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Beet curly top resistance in two USDA-ARS sugar beet germplasm panels, 2023.

Strausbaugh, C.A. (2024) Beet curly top resistance in two USDA-ARS sugar beet germplasm panels, 2023. Plant Disease Management Report. 18(V017):1-3. 12 March 2024.

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Two germplasm panels consisting of thirty sugar beet (Beta vulgaris L.) lines each from USDA-ARS pre-breeding programs were
screened for resistance to Beet curly top virus (BCTV) alongside three commercial check cultivars [Detroit Dark Red (susceptible),
HM PM90 (resistant), and SV2012RR (susceptible)]. The curly top evaluation was conducted at the USDA-ARS North Farm in
Kimberly, ID which has Portneuf silt loam soil and had been in barley in 2022. The field was fall plowed with a Terrano chisel plow.
In the spring, the field was fertilized (115 lb N and 140 lb P2O5/A), disked, and roller harrowed on 10 Apr. The germplasm was
planted (density of 114,048 seeds/A) on 2 May. The plots were two rows 10-ft long with 22-in. row spacing and treatments were
arranged in a randomized complete block design with six replications. The field was sprinkler irrigated, cultivated, and hand weeded
as necessary. Plants were inoculated at the four- to six-leaf growth stage on 12 Jun with approximately six viruliferous (containing the
following BCTV strains: California/Logan and Severe) beet leafhoppers (Circulifer tenellus Baker) per plant. The beet leafhoppers
were redistributed two times a day during the first seven days by dragging a tarp through the field. Plots were rated for foliar
symptom development on 12 Jul using a scale of 0 to 9 (0 = healthy and 9 = dead; Plant Dis. 90:1539-1544). Data were rank
transformed prior to nonparametric analysis in SAS (Ver. 9.4) using the PROC MIXED procedure as described by Shah and Madden
(Phytopathology 94:33-43). Mean separation was based on a PDIFF comparison with a probability cutoff of 0.05.

Item Type: Article
Subjects: Irrigated crops > Sugarbeet > Curly top
Irrigated crops > Sugarbeet > Resistance
Irrigated crops > Sugarbeet
Depositing User: Users 11 not found.
Date Deposited: 15 Mar 2024 17:16
Last Modified: 15 Mar 2024 17:16
Item ID: 1818