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Registration of ‘RWA 1758’ Russian Wheat Aphid‐Resistant Spring Barley
Author(s) -
Bregitzer P.,
Mornhinweg D. W.,
Obert D. E.,
Windes J.
Publication year - 2008
Publication title -
journal of plant registrations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 21
eISSN - 1940-3496
pISSN - 1936-5209
DOI - 10.3198/jpr2007.07.0421crc
Subject(s) - russian wheat aphid , biology , hordeum vulgare , germplasm , agronomy , aphid , spring (device) , winter wheat , homoptera , aphididae , poaceae , horticulture , pest analysis , mechanical engineering , engineering
‘RWA 1758’ (Reg. No. CV‐336; PI 648913) is a spring, Russian wheat aphid ( Diuraphis noxia Mordvilko) (RWA)–resistant two‐rowed barley ( Hordeum vulgare L.) developed by the USDA‐ARS. RWA 1758 was selected and released on the basis of competitive agronomic performance and resistance to damage caused by RWA feeding. RWA 1758 derives from a BC 3 F 3:4 selection from the cross ‘Baronesse’*4/STARS 9577B. It was tested under the experimental designation 01ST1758. STARS 9577B is a six‐rowed spring RWA‐resistant germplasm line developed and released by the USDA‐ARS. STARS 9577B is resistant to the five RWA biotypes known to be present in the United States. STARS 9577B was developed via selection from CIho 4165, a landrace originally collected in Afghanistan. The main component of the resistance is tolerance, conferred by two dominant genes with recessive epistasis.