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Beet curly top resistance in USDA-ARS Kimberly sugar beet germplasm, 2013

Eujayl, Imad A. and Strausbaugh, C.A. (2014) Beet curly top resistance in USDA-ARS Kimberly sugar beet germplasm, 2013. Plant Disease Management Reports. 8:FC250.

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Curly top caused by Beet curly top virus is a widespread disease problem vectored by the beet leafhopper in semiarid sugar beet production areas. Host resistance is the primary defense against this problem, but resistance in commercial cultivars is only low to intermediate. In order to identify novel sources of curly top resistance, 14 sugar beet lines were screened in a disease nursery in 2013. The lines were arranged in a randomized complete block design with six replications. A curly top epiphytotic was created by releasing six viruliferous beet leafhoppers per plant at the four- to six-leaf growth stage on 27 Jun. Foliar symptoms were evaluated on 16 Jul using a scale of 0-9 (0 = healthy and 9 = dead) in a continuous manner. Curly top symptom development was uniform and no other disease problems were evident in the plot area. The disease pressure in the test was moderately severe with good symptom development in the susceptible check. Based on all variables, three of the lines were not significantly different from the resistant control, HM PM90. These germplasm lines will be released to the general public, so they can be utilized to improve resistance in commercial cultivars.

Item Type: Article
NWISRL Publication Number: 1508
Subjects: Irrigated crops > Sugarbeet
Depositing User: Users 6 not found.
Date Deposited: 02 Sep 2014 18:47
Last Modified: 02 Sep 2014 18:47
Item ID: 1552