Beet curly top resistance in USDA-ARS plant introduction lines, 2016

Strausbaugh, C.A. and Panella, Leonard W. (2017) Beet curly top resistance in USDA-ARS plant introduction lines, 2016. Plant Disease Management Reports. 11(V082). 14 March 2017.

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Abstract

Curly top caused by Beet curly top virus (BCTV) 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, twenty-nine Plant Introduction (PI) Lines were screened in a disease nursery in 2016. The lines were arranged in a randomized complete block design with four replications. A curly top epiphytotic was created by releasing approximately six viruliferous beet leafhoppers per plant at the four- to six-leaf growth stage on 20 Jun. Foliar symptoms were evaluated on 13 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. Three of the PIs were not significantly different from the resistant checks based on the visual rating. These promising lines have been incorporated into the USDA-ARS sugar beet germplasm improvement program as potentially novel sources of resistance to BCTV.

Item Type:	Article
NWISRL Publication Number:	1591
Subjects:	Irrigated crops > Sugarbeet > Curly top Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet
Depositing User:	Users 6 not found.
Date Deposited:	17 Mar 2017 16:42
Last Modified:	17 Mar 2017 16:42
Item ID:	1634
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1634