Association Analysis for morphological traits in Triticum urartu and Triticum boeoticum populations using IRAP and REMAP markers
Paper Details
Association Analysis for morphological traits in Triticum urartu and Triticum boeoticum populations using IRAP and REMAP markers
Abstract
The two einkorn wheats, Triticum boeoticum and Triticum urartu, that known as ‘A’ genome donor to cultivated wheat are the main elements of many wheat breeding programs. In order to analyze association of IRAP and REMAP markers with some morphological traits, 44 genotypes of T. urartu and 76 genotypes of T. boeoticum from west and north-west of Iran were used. Stepwise regression analysis between molecular data as predictors and each morphological traits data as dependent variables was performed to identify informative markers associated with the studied traits. The associated IRAP and REMAP markers explained %16-85 and %24-89 of the variation of each individual trait, respectively. The most explained variation belongs to traits days to heading and harvest index with association of 11 REMAP loci. Totally, 15out of 26 scorable IRAP combinations showed significant regression with 12 morphological traits. While, 28 out of 41 REMAP scorable combinations had significant regression with all 15 morphological traits. Totally, insertional genomic region of NIKITA and LTR7286 retrotransposons indicated the highest association with most of the studied traits. Therefore, it’s possible to use these retrotransposons along with morphological traits in wheat breeding programs to identify suitable parents to produce mapping populations and also Marker-assisted selection programs, after necessary validation.
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