title: Wheat Genotypes With Combined Resistance to Wheat Curl Mite, Wheat Streak Mosaic Virus, Wheat Mosaic Virus, and Triticum Mosaic Virus.
abstract: The wheat curl mite, Aceria tosichella Keifer, (WCM) is a global pest of bread wheat that reduces yields significantly. In addition, WCM carries Wheat streak mosaic virus (WSMV, family Potyviridae, genus Tritimovirus), the most significant wheat virus in North America; High Plains wheat mosaic virus (HPWMoV, genus Emaravirus, formerly High plains virus); and Triticum mosaic virus (TriMV, family Potyviridae, genus Poacevirus). Viruses carried by WCM have reduced wheat yields throughout the U.S. Great Plains for >50 yr, with average yield losses of 2-3% and occasional yield losses of 7-10%. Acaricides are ineffective against WCM, and delayed planting of winter wheat is not feasible. Five wheat breeding lines containing Cmc4, a WCM resistance gene from Aegilops tauschii, and Wsm2, a WSMV resistance gene from wheat germplasm CO960293-2 were selected from the breeding process and assessed for phenotypic reaction to WCM feeding, population increase, and the degree of WSMV, HPWMoV, and TriMV infection. Experiments determined that all five lines are resistant to WCM biotype 1 feeding and population increase, and that two breeding lines contain resistance to WSMV, HPWMoV, and TriMV infection as well. These WCM-, WSMV-, HPWMoV-, and TriMV-resistant genotypes can be used improve management of wheat yield losses from WCM-virus complexes.
authors.affiliation: Department of Agronomy, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan (wenpo@ntu.edu.tw).
authors.forename: Wen-Po
authors.initials: WP
authors.lastname: Chuang
authors.affiliation: Department of Entomology, Kansas State University, 1603 Old Claflin Place, Manhattan 66506, KS (liaguiro@ksu.edu; luaay@ksu.edu; cmsmith@ksu.edu).
authors.forename: Lina Maria Aguirre
authors.initials: LMA
authors.lastname: Rojas
authors.affiliation: Department of Entomology, Kansas State University, 1603 Old Claflin Place, Manhattan 66506, KS (liaguiro@ksu.edu; luaay@ksu.edu; cmsmith@ksu.edu).
authors.forename: Luaay Kahtan
authors.initials: LK
authors.lastname: Khalaf
authors.affiliation: Agricultural Research Center-Hays, Kansas State University, 1232 240th Ave., Hays 67601, KS, USA (gzhang@ksu.edu).
authors.forename: Guorong
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Department of Agronomy, Kansas State University, 1712 Claflin Rd., Manhattan 66506, KS (akf@ksu.edu).
authors.forename: Allan K
authors.initials: AK
authors.lastname: Fritz
authors.affiliation: Department of Plant Pathology, Kansas State University, 1712 Claflin Rd., Manhattan 66506, KS (aewtospo@ksu.edu).
authors.forename: Anna E
authors.initials: AE
authors.lastname: Whitfield
authors.affiliation: Department of Entomology, Kansas State University, 1603 Old Claflin Place, Manhattan 66506, KS (liaguiro@ksu.edu; luaay@ksu.edu; cmsmith@ksu.edu).
authors.forename: C Michael
authors.initials: CM
authors.lastname: Smith
mesh_terms: D000818:Animals; D000898:Antibiosis; D002043:Bunyaviridae / Q000502:physiology; D005838:Genotype; D008925:Mites / Q000502:physiology; D010935:Plant Diseases / Q000235:genetics* / Q000821:virology; D019176:Potyviridae / Q000502:physiology; D014908:Triticum / Q000235:genetics* / Q000502:physiology* / Q000821:virology
keywords: acarology; crop protection; insect–plant interaction; plant resistance; vector-borne pathogen-plant