Mapping of a novel major effect Hessian fly field partial-resistance locus in southern soft red winter wheat line LA03136E71

Autor: Dominic D. Reisig, Gina Brown-Guedira, Z. J. Winn, K. Merrill, R. Acharya, Steve Harrison, Sue E. Cambron, J. H. Lyerly, J. P. Murphy
Rok vydání: 2021
Předmět:
Zdroj: Theoretical and Applied Genetics. 134:3911-3923
ISSN: 1432-2242
0040-5752
Popis: Hessian fly resistance has centralized around resistance loci that are biotype specific. We show that field resistance is evident and controlled by a single locus on chromosome 7D. Hessian flies (Mayetiola destructor Say) infest and feed upon wheat (Triticum aestivum L) resulting in significant yield loss. Genetically resistant cultivars are the most effective method of Hessian fly management. Wheat breeders in the southern USA have observed cultivars exhibiting a “field resistance” to Hessian fly that is not detectable by greenhouse assay. The resistant breeding line “LA03136E71” and susceptible cultivar “Shirley” were crossed to develop a population of 200 random F4:5 lines using single seed descent. The population was evaluated in a total of five locations in North Carolina during the 2019, 2020, and 2021 seasons. A subsample of each plot was evaluated for the total number of tillers, number of infested tillers, and total number of larvae/pupae. From these data, the percent infested tillers, number of larvae/pupae per tiller, and the number of larvae/pupae per infested tiller were estimated. In all within and across environment combinations for all traits recorded, the genotype effect was significant (p
Databáze: OpenAIRE
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