In order to Mapping main and epistatic effects and environmental interactions of QTLs for
Phenological traits in normal and water deficit conditions in wheat, a recombinant inbred lines population, comprising 148 lines derived from a cross between two winter wheat cultivars, ‘YecoraRojo’ and ‘No. 49’, was evaluated in two location in Miandoab and Mahabad during 2014-2016. A linkage map including 177 microsatellites and 51 retrotransposons markers. Analysis of variance results showed that there was a significant difference between genotypes for all studied traits. QTL analysis based on composite interval mapping (CIM) showed in normal moisture conditions 2 QTL, 2 QTL × environments interactions, 14 additive × additive epistasis effects and 10 QTL × QTL× environment effects were significant. Phenotypic variance explained by main QTL varied from 2.6% to 7.14% for grain filling period and days to heading. In water deficit condition, 6 QTLs, 2 QTL × environments interactions,9 additive × additive inactions and 2 QTL × QTL × environment interactions effects were found, The highest and lowest explained phenotypic variation belonged to photosynthetic for grain filling period and days to heading with R
2 value of 4.46 and 12.44 respectively. Also for days to heading and days to physiological maturity QTLs was detected on chromosomes 2A, 3A, 5A and 2B which coincided with Vernalization-related genes (VRN) and genes sensitive to photoperiod (Ppd) chromosomes in wheat.
Type of Study:
Applicable |
Subject:
Subject 01 Received: 2017/10/20 | Accepted: 2018/10/7 | Published: 2019/10/1