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| The analysis of Arabidopsis natural variation (Maarten ... |
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Group Koornneef
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Fig 1. The pedigree of a 4 parent recombinant inbred line population. |
The wild accessions of the model Arabidopsis thaliana are used to investigate the genetic basis of the differences between these accessions.
To do this we use a large collection of accessions and so-called immortal mapping populations, such as recombinant inbred lines. We developed novel populations based on multiple parents (Fig1).
We study traits that we expect are relevant for adaptation in nature, such as seed dormancy, flowering time, growth and tolerance to abiotic stress in collaboration with other groups in the department of Plant Breeding and Genetics. We perform quantitative trait loci (QTL) analysis and association mapping to dissect the genetic basis of these traits and pursue the cloning of some of the
underlying genes.
In barley we exploit natural variation present within the cultivated and the wild germplasm. Traits that we focus on are related to seed biology such as seed longevity and dormancy. To study these traits we use available mapping populations and also developed a recombinant inbred line population which includes multiple Hordeum spontaneum accessions in a 75 % background of the cultivar Morex.
We expect that knowing the genetic and molecular basis of the traits we are studying will be important for the understanding of ecology and provide tools for plant breeding.
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© 2010, Max Planck Institute for Plant Breeding Research, Cologne |
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