Présentation de Peter Braun

Hochschule Gesenheim University, Germany     

Columnar apple trees offer potential advantages for the commercial production of apples. The columnar growth habit is caused by a single dominant mutation but with considerable variance in the resulting phenotypes. We present this as an example on how to define and phenotype the trait of interest and identify the genetic cause of the resulting growth habit. However, since there is considerable interaction between the columnar mutation and the genetic background, a large phenotypic variance is observed in the offspring. We use a SNP based approach using rtGbS (random tagging Genotying by Sequencing) combined with detailed phenotyping as a basis for a Genome wide association study to identify the main QTL´s causing the desired ideal growth habit.

Contact :  Peter.Braun@hs-gm.de