Beet curly top resistance in USDA-ARS Kimberly germplasm, 2020

Eujayl, Imad A. and Strausbaugh, C.A. (2021) Beet curly top resistance in USDA-ARS Kimberly germplasm, 2020. Plant Disease Management Reports. 15. 9 March 2021.

Text 1696.pdf Download (41kB)

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, 8 sugar beet lines produced by the USDA-ARS Kimberly sugar beet program were screened in a disease nursery in 2020. 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 23 Jun. Foliar symptoms were evaluated on 13 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 moderately severe with good symptom development in the susceptible checks. Based on the visual rating, one line (KDH39/KDH13; population from selected F4 families) and one genetic stock line (KDH13) were not significantly different from the resistant checks. The resistant KDH39/KDH13 line will be suitable for single trait selection and advancement to breeding lines to enrich the BCTV resistance gene pool in the USDA-ARS sugar beet germplasm.

Item Type:	Article
NWISRL Publication Number:	1696
Subjects:	Irrigated crops > Sugarbeet > Curly top Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet
Depositing User:	Users 6 not found.
Date Deposited:	10 Mar 2021 21:46
Last Modified:	10 Mar 2021 21:46
Item ID:	1734
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1734