Identification of adapted breeding lines to improve barley hybrids for Spain

Crop Science

article

Miriam Fernández-Calleja¹  Christophe Boutin²  Emmanuelle Dyrszka²  Yann Manès²  Jochen C. Reif³  Yusheng Zhao³  Nieves Aparicio⁴  Francisco J. Ciudad⁴  Ana M. Casas¹  Ernesto Igartua¹ 

[1]Aula Dei Experimental Station

[2]Syngenta France SAS

[3]Leibniz Institute of Plant Genetics and Crop Plant Research

[4]Instituto Tecnológico Agrario de Castilla y León, Finca Zamadueñas

DOI  :  10.1002/csc2.20858

学科分类：农业科学（综合）

来源: Crop Science

【 摘 要 】

This study explores the potential of Spanish germplasm for the development ofhybrids adapted to southern Europe, a new region for hybrid barley (Hordeum vulgare). A set of 140 locally adapted, advanced breeding lines, developed in a Spanishpublic breeding program, were evaluated for their potential to widen the germplasmavailable for hybrid barley development. A subset of 24 lines was introduced intothree-way hybrid combinations and tested in a field trial network of four locationsand 2 yr. The hybrid performance of the rest of the lines was estimated based ongenomic prediction models. No three-way hybrid exceeded the best check. We succeeded in identifying lines with high general combining ability, which could producepromising two-way hybrids. Some were among those tested in the field, whereasothers resulted from genomic predictions, validating the strategy followed of mining locally adapted breeding lines. Rachis brittleness detected in field trials revealeda low but detrimental effect of the presence of alternative brittle mutations in thehybrid combination. The success of hybrid breeding in southern Europe requires further investigation of the underlying heterotic patterns, and appropriate management of brittle genes through prebreeding, to widen the germplasm accessible for hybridbarley breeding.

【 授权许可】

CC BY