Evaluation of experimental sugar beet hybrids for resistance to curly top in Malheur County, OR, 2005

Strausbaugh, C.A. and Gillen, A.M. (2006) Evaluation of experimental sugar beet hybrids for resistance to curly top in Malheur County, OR, 2005. Biological and Cultural Tests for Control of Plant Diseases. 21:p. FC040.

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Abstract

Twenty-five experimental sugarbeet hybrids submitted to the official variety trials were evaluated for resistance to Beet curly top virus (BCTV). Hybrids were planted in a commercial sprinkler-irrigated sugarbeet field and exposed to a natural epiphytotic of BCTV. Experimental units were arranged in a randomized complete block design with seven replications. Plots were evaluated for BCTV based on a Disease Index (DI) scale of 0 to 9 (no symptoms to dead) on Sept 14, 2004 by three raters. The moderately severe epiphytotic resulted in uniform disease pressure and significant differences between hybrids for DI, root yield, sugar content, and estimated recoverable sugar. Our disease ratings were positively correlated with (r = 0.632, P < 0.0001) ratings from the 2004 Curly Top Nursery. There was no correlation between DI and estimated recoverable sugar which was probably due to field or genetic variation influencing yield.

Item Type:	Article
NWISRL Publication Number:	1193
Subjects:	Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet > Curly top
Depositing User:	Users 3 not found.
Date Deposited:	24 Mar 2008 21:28
Last Modified:	04 Mar 2014 16:06
Item ID:	1221
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1221