Rapid phenotypic assessment of bird cherry-oat aphid resistance in winter wheat
نویسندگان
چکیده
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.
منابع مشابه
Fixed precision sequential sampling plans for the greenbug and bird cherry-oat aphid (Homoptera: Aphididae) in winter wheat.
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