Beet curly top resistance in USDA-ARS Plant Introduction Lines, 2018

Strausbaugh, C.A. and Hellier, B.C. (2019) Beet curly top resistance in USDA-ARS Plant Introduction Lines, 2018. Plant Disease Management Reports. 13(CF050). 1 March 2019.

Text 1643.pdf Download (183kB)

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, 30 sugar beet USDA-ARS Plant Introduction (PI) lines were screened in a disease nursery in 2018. 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 25 June. Foliar symptoms were evaluated on 10 July 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 severe with good symptom development in the susceptible checks. Based on the visual rating, five entries (18, 22, 26, 27, and 29) performed the same as the resistant check. These germplasm lines will be investigated further for incorporation into germplasm lines so they can be utilized to improve BCTV resistance in commercial sugar beet cultivars.

Item Type:	Article
NWISRL Publication Number:	1643
Subjects:	Irrigated crops > Sugarbeet > Curly top Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet
Depositing User:	Users 6 not found.
Date Deposited:	08 Mar 2019 21:01
Last Modified:	08 Mar 2019 21:01
Item ID:	1687
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1687