Beet curly top resistance in USDA-ARS Kimberly sugar beet germplasm lines, 2016

Eujayl, Imad A. and Strausbaugh, C.A. (2017) Beet curly top resistance in USDA-ARS Kimberly sugar beet germplasm lines, 2016. Plant Disease Management Reports. 11(V081). 14 March 2017.

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Abstract

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, 11 sugar beet lines were screened in a disease nursery in 2016. 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 20 Jun. Foliar symptoms were evaluated on 20 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 the overall visual rating, KDH13 and KDH4-9 performed the same as the resistant check. Additionally, ELISA data also indicated that these two lines had significantly lower or similar virus titer as the resistant check. These germplasm lines will be released to the general public, so they can be utilized to improve resistance in commercial sugar beet cultivars.

Item Type:	Article
NWISRL Publication Number:	1592
Subjects:	Irrigated crops > Sugarbeet > Curly top Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet
Depositing User:	Users 6 not found.
Date Deposited:	17 Mar 2017 16:55
Last Modified:	17 Mar 2017 16:55
Item ID:	1635
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1635