In:
Plant Breeding, Wiley, Vol. 136, No. 6 ( 2017-12), p. 892-907
Abstract:
Phosphorus (P) is an important macronutrient required for plant growth and yield formation. Since decades, breeders aim to optimize P efficiency in crops. We studied a set of 47 wild barley (Hordeum vulgare ssp . spontaneum, Hsp) introgression lines ( IL s) in hydroponic culture to identify quantitative trait loci ( QTL s) improving growth and nutrient content under P deficiency. Applying a mixed model analysis, a total of 91 independent QTL s were located among 39 IL s, of which 64 QTL s displayed trait‐improving Hsp effects. For example, an unknown Hsp allele on barley chromosome 4H increased shoot dry weight under P deficiency in three overlapping IL s by 25.9%. Likewise, an Hsp allele on barley chromosome 6H increased root dry weight under P deficiency in two overlapping IL s by 27.6%. In total, 31 QTL s confirmed Hsp effects already identified in previous field and glasshouse experiments with the same IL s. We conclude that wild barley contains numerous trait‐improving QTL alleles, which are active under P deficiency. In future, the underlying genes can be subjected to cloning and, simultaneously, used in elite barley breeding.
Type of Medium:
Online Resource
ISSN:
0179-9541
,
1439-0523
DOI:
10.1111/pbr.2017.136.issue-6
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2020488-7
SSG:
12
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