Quantitative Trait Loci (QTLs) for Analysis of Physiological and Biochemical Responses to Abiotic Stress
Quantitative geneticists and plant physiologists have to deal with plant variability however approaches diverse since the geneticists are interested in explaining and in using the genetic variance when the physiologists usually tend to minimise the genetic component in order to concentrate on the environmental variability. Heritability, which estimates the genetic part of the total variance, is used by the geneticist to decide if a trait is valuable for further study (i.e. genetically variable enough) and especially to map loci. When dealing with complex or quantitative traits, several loci are expected for one trait. The availability of molecular markers has allowed mapping of these quantitative trait loci, i.e. QTLs (Paterson et al., 1988).
KeywordsQuantitative Trait Locus Water Stress Drought Tolerance Relative Water Content Recombinant Inbred Line
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