Characterization of Resistance to Cephus cinctus (Hymenoptera: Cephidae) in Barley Germplasm

Journal of Economic Entomology
Andrea C VarellaDavid K Weaver

Abstract

Most barley cultivars have some degree of resistance to the wheat stem sawfly (WSS), Cephus cinctus Norton (Hymenoptera: Cephidae). Damage caused by WSS is currently observed in fields of barley grown in the Northern Great Plains, but the impact of WSS damage among cultivars due to genetic differences within the barley germplasm is not known. Specifically, little is known about the mechanisms underlying WSS resistance in barley. We characterized WSS resistance in a subset of the spring barley CAP (Coordinated Agricultural Project) germplasm panel containing 193 current and historically important breeding lines from six North American breeding programs. Panel lines were grown in WSS infested fields for two consecutive years. Lines were characterized for stem solidness, stem cutting, WSS infestation (antixenosis), larval mortality (antibiosis), and parasitism (indirect plant defense). Variation in resistance to WSS in barley was compared to observations made for solid-stemmed resistant and hollow-stemmed susceptible wheat lines. Results indicate that both antibiosis and antixenosis are involved in the resistance of barley to the WSS, but antibiosis seems to be more prevalent. Almost all of the barley lines had greater larval mort...Continue Reading

References

May 22, 2003·The International Journal of Biochemistry & Cell Biology·Jennifer E Morgan, Terence A Partridge
Aug 10, 2006·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Eligio BossoliniBeat Keller
Jul 9, 2009·Nature Reviews. Genetics·Trudy F C MackayJulien F Ayroles
Jul 21, 2009·Journal of Economic Entomology·David K WeaverGregg R Carlson
Dec 22, 2009·Environmental Entomology·Micaela ButelerRobert K D Peterson
Oct 16, 2013·The Plant Journal : for Cell and Molecular Biology·Severine HurniBeat Keller
Oct 7, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Andrea C VarellaLuther E Talbert
Dec 31, 2016·Insect Science·Zainab Aljbory, Ming-Shun Chen

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