We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Rapid phenotypic assessment of bird cherry-oat aphid resistance in winter wheat.
- Authors
Dunn, B. L.; Carver, B. F.; Baker, C. A.; Porter, D. R.
- Abstract
Rhopalosiphum padi L. causes significant damage to winter wheat ( Triticum aestivum L.), even without obvious aboveground symptoms of injury. Our objectives were to develop a juvenile-plant bioassay for bird cherry-oat aphid (BCOA) resistance that allows rapid phenotypic differentiation. Central features of the bioassay include root and shoot weight measurements of 3-week-old seedlings produced in seed germination pouches, a 14-day aphid exposure period, and a non-infested control treatment to establish a baseline for expected biomass per genotype. Cultivars used in bioassay development were ‘Illinois Rustproof’ and ‘Skala’, which showed smaller BCOA-induced reductions in biomass than the more susceptible genotypes, ‘Patrick’ and ‘Scout 66’. Mean reductions in root biomass were 48% for ‘Patrick’ and ‘Scout 66’, compared with 29% for ‘Illinois Rustproof’ and ‘Skala’. This rapid and repeatable bioassay is extendable to large wheat collections and inbred line populations.
- Subjects
WHEAT; PLANT bioassay; PHENOTYPES; GENOTYPE-environment interaction; SEEDLINGS; PLANT biomass
- Publication
Plant Breeding, 2007, Vol 126, Issue 3, p240
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1111/j.1439-0523.2007.01345.x