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Abstract:   (51 Views)
In order to QTL mapping related salt tolerance and determine the contribution of each QTL on phenotypic variation in a population consisting of 96 family farms F2:3 genotypes derived from the cross Kharchia (parent tolerant) and Gaspard (susceptible parent) were evaluation at 2 years. Of the 92 microsatellite markers to evaluate parents, 32 markers were polymorphic state that was used for analysis. 3 QTL was found according to mapping composite interval method for plant height trait, which were located on chromosome 7D , 3B and 4B. In total, these QTLs explained 37 percent of phenotypic variation. Also, 3 QTL was found on chromosome 7B and 7D for the size of seedling, which accounted 38 percent of phenotypic variance. For number of grains per spike and grain weight per main spike traits was identified 2 QTL on chromosome 7D and 2 QTL for seed number trait on chromosome 4B. 1 QTL were found on chromosomes 7D for each of the traits internode number and internode length which explained 12 and 11% of the phenotypic variance respectively. For each of the traits number of spikelets, fertile tiller and spike length found 1 QTL on chromosome 4B which explained 12% of the phenotypic variation. Genetic analysis of complex traits such as tolerance to salinity and identification of genetic locations controlling quantitative traits allow marker-assisted selection and ultimately improve the selection efficiency.
Keywords: salinity, wheat, SSR Marker, QTL
Type of Study: Research | Subject: General

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