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Kimberly sugar beet germplasm evaluated for rhizomania and storage rot resistance in Idaho, 2017

Eujayl, I. A. and Strausbaugh, C.A. (2018) Kimberly sugar beet germplasm evaluated for rhizomania and storage rot resistance in Idaho, 2017. Plant Disease Management Reports. 12(CF153):1. 27 August 2018.

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Abstract

Rhizomania caused by Beet necrotic yellow vein virus (BNYVV) and storage losses are serious sugar beet production problems. To identify sugar beet germplasm lines with resistance to BNYVV and storage rots, 14 germplasm lines from the USDA-ARS Kimberly sugar beet program and four check cultivars were screened. The lines were grown in a sugar beet field infested with BNYVV during the 2017 growing season in a randomized complete block design with 6 replications. At harvest on 10 October 2017, roots were dug and evaluated for rhizomania symptoms and also placed in an indoor commercial sugar beet storage building. After 133 days in storage, samples were evaluated for the percentage of root surface area covered by fungal growth or rot. Rhizomania symptom development was uniform and other disease problems were not evident in the plot area. The BNYVV susceptible check had 98% foliar symptoms and a high root disease severity rating. The three resistant checks had 0 to 12% foliar symptoms and low root ratings. Based on root ratings, all entries had a level of resistance better than the susceptible check. However, KEMS43 and KD13/19-19 were the only entries with both root and foliar ratings not different from the resistant checks. Four additional entries (KEMS09-600, KEMS12/KPS24, KEMS06-600, and KEMS06) with both good foliar and storage ratings should be reevaluated for BNYVV resistance. These six entries just mentioned should also be considered as sources of storage rot resistance. These entries with superior performance will be released to the public and utilized in backcrossing breeding.

Item Type: Article
NWISRL Publication Number: 1628
Subjects: Irrigated crops > Sugarbeet > Resistance
Irrigated crops > Sugarbeet > Rhizomania
Irrigated crops > Sugarbeet > Storage
Irrigated crops > Sugarbeet
Depositing User: Michelle Wayment
Date Deposited: 28 Aug 2018 22:56
Last Modified: 28 Aug 2018 22:56
Item ID: 1672
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/1672

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