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ARS Home » Plains Area » Manhattan, Kansas » Center for Grain and Animal Health Research » Hard Winter Wheat Genetics Research » Research » Publications at this Location » Publication #321801
Title: Wheat streak mosaic virus resistance in eight wheat germplasm lines

Author
item ZHANG, XINZHONG - Kansas State University
item Bai, Guihua
item XU, RUGEN - Yangzhou University
item GUORONG, ZHANG - Kansas State University

Submitted to: Plant Breeding Reviews
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/25/2015
Publication Date: 12/22/2015
Publication URL: http://handle.nal.usda.gov/10113/63241
Citation: Zhang, X., Bai, G., Xu, R., Guorong, Z. 2015. Wheat streak mosaic virus resistance in eight wheat germplasm lines. Plant Breeding Reviews. 135(1):26-30. doi:10.1111/pbr.12334.

Interpretive Summary: Wheat Streak Mosaic Virus (WSMV) is a destructive pathogen in wheat. Host resistance is the most effective way to control this virus. To date, Wsm2 is the only wheat streak mosaic resistance gene that was genetically mapped. The objective of this study was test eight newly discovered resistant lines to determine if they had novel sources of resistance to WSMV. Our results suggested that a single dominant gene controls the WSMV resistance in lines CItr9358, PI225288, PI243652, PI245439, PI245526 and PI478095, and the gene is either identical or very closely linked to Wsm2. The resistance in PI243753 and PI321730, however, is likely controlled by a novel gene that is linked to Wsm2. The resistance in PI321730 might also involve some minor genes. This study provided useful information for breeders to select appropriate resistant parents to improve WSMV resistance in wheat.

Technical Abstract: Wheat Streak Mosaic Virus (WSMV) disease is an important disease in wheat. Use of resistant cultivars is the most effective approach to reduce the yield losses caused by the disease. To identify new sources of resistance to WSMV, eight resistant wheat lines that were selected based on the results from a large scale screening of germplasm from USDA germplasm collection for the disease resistance were investigated for their inheritance and allelic relationship with known resistance gene Wsm2. A single dominant gene, either the same as or very close to Wsm2, controls the WSMV resistance in germplasm lines CItr9358, PI225288, PI243652, PI245439, PI245526 and PI47809, but a different gene that is likely linked to Wsm2 may present in PI243753 and PI321730. This study provided useful information for breeders to select appropriate resistant parents to improve WSMV resistance in wheat.