The seed dormancy characteristic is regarded as one of the most critical factors for pre-harvest sprouting (PHS) resistance. As a wild wheat relative species, is a potential genetic resource for improving common wheat. In this study, an advanced backcross population (201 strains) containing only segments was developed by means of synthetic octaploid wheat (hexaploid wheat Zhoumai 18 × T093). Subsequently, seed dormancy rate (Dor) in the advanced backcross population was evaluated on the day 3, 5 and 7, in which 2 major QTLs ( and ) were observed on chromosomes 2D and 3D with phenotypic variance explained values (PVEs) of 10.25 and 20.40%, respectively. Further investigation revealed significant correlation between and gene, while no association was found between the former and gene, implying that site could be of closer position to . The obtained quantitative trait locus sites (QTLs) in this work could be applied to develop wheat cultivars with PHS resistance.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5733556 | PMC |
| http://dx.doi.org/10.3389/fpls.2017.02123 | DOI Listing |
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