| Abstrakt: |
Phenology is an important agronomic trait for common wheat, which has a great impact to explore its genetic mechanism and effect for wheat breeding and application. In this study, 240 recombinant inbred lines (RILs) derived from Yangmai 158 and Hiller were used to identify the phenology traits in 2-4 environments. A total of 52 QTL were detected on chromosomes 2A, 2D, 3D, 4B, 4D, 5A, 5B, 5D, 6A, 6B, 7A, 7B, and 7D by using the constructed high-density genetic map. QJS/BS/HS/FS/MS.nau-5D.2, QJS/BS/HS/FS/MS.nau-2D.1, and QJS/BS/HS/FS/MS.nau-7B.1 were detected for several years, which explained 4.56%-46.86%, 1.32%-33.40%, and 2.37%-13.27% of phenotypic variation, respectively. QBS/HS.nau-2A.3, QHS/FS.nau-5B.2, QFS.nau-2A.5, QBS.nau-6A.2, QJS.nau-4D.2, QJS.nau-6A.3, QBS.nau-2A.2, QBS/HS.nau-6A.1, QFS.nau-7A.2, QMS.nau-3D, QMS.nau-4D.1, and QMS.nau-6B.1 were new QTL. Pyramiding of multiple phenology loci with large effects or repeated is an effective approach to shorten the growth period in different degrees, which could be used to cultivate early-maturing and high-yield wheat varieties. [ABSTRACT FROM AUTHOR] |
