Simultaneous improvement of grain yield and grain protein concentration in durum wheat by using association tests and weighted GBLUP.

Autor: Esposito S; Research Centre for Cereal and Industrial Crops (CREA-CI), CREA - Council for Agricultural Research and Economics, SS 673 Meters 25200, 71122, Foggia, Italy., Vitale P; Research Centre for Cereal and Industrial Crops (CREA-CI), CREA - Council for Agricultural Research and Economics, SS 673 Meters 25200, 71122, Foggia, Italy.; Department of Agriculture, Food, Natural Science, Engineering, University of Foggia, Via Napoli 25, 71122, Foggia, Italy., Taranto F; Institute of Biosciences and Bioresources (CNR-IBBR), Via Amendola 165/A, 70126, Bari, Italy., Saia S; Department of Veterinary Sciences, University of Pisa, 56129, Pisa, Italy., Pecorella I; Research Centre for Cereal and Industrial Crops (CREA-CI), CREA - Council for Agricultural Research and Economics, SS 673 Meters 25200, 71122, Foggia, Italy., D'Agostino N; Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy., Rodriguez M; Department of Agriculture, University of Sassari, Viale Italia, 39, 07100, Sassari, Italy., Natoli V; Genetic Services SRL, Contrada Catenaccio, snc, 71026, Deliceto, FG, Italy., De Vita P; Research Centre for Cereal and Industrial Crops (CREA-CI), CREA - Council for Agricultural Research and Economics, SS 673 Meters 25200, 71122, Foggia, Italy. pasquale.devita@crea.gov.it.
Jazyk: angličtina
Zdroj: TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik [Theor Appl Genet] 2023 Nov 10; Vol. 136 (12), pp. 242. Date of Electronic Publication: 2023 Nov 10.
DOI: 10.1007/s00122-023-04487-8
Abstrakt: Key Message: Simultaneous improvement for GY and GPC by using GWAS and GBLUP suggested a significant application in durum wheat breeding. Despite the importance of grain protein concentration (GPC) in determining wheat quality, its negative correlation with grain yield (GY) is still one of the major challenges for breeders. Here, a durum wheat panel of 200 genotypes was evaluated for GY, GPC, and their derived indices (GPD and GYD), under eight different agronomic conditions. The plant material was genotyped with the Illumina 25 k iSelect array, and a genome-wide association study was performed. Two statistical models revealed dozens of marker-trait associations (MTAs), each explaining up to 30%. phenotypic variance. Two markers on chromosomes 2A and 6B were consistently identified by both models and were found to be significantly associated with GY and GPC. MTAs identified for phenological traits co-mapped to well-known genes (i.e., Ppd-1, Vrn-1). The significance values (p-values) that measure the strength of the association of each single nucleotide polymorphism marker with the target traits were used to perform genomic prediction by using a weighted genomic best linear unbiased prediction model. The trained models were ultimately used to predict the agronomic performances of an independent durum wheat panel, confirming the utility of genomic prediction, although environmental conditions and genetic backgrounds may still be a challenge to overcome. The results generated through our study confirmed the utility of GPD and GYD to mitigate the inverse GY and GPC relationship in wheat, provided novel markers for marker-assisted selection and opened new ways to develop cultivars through genomic prediction approaches.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
Externí odkaz: