The course deals with developmental biology of plants and environmental constrains upon plant growth. Focus is on regulation of cell division, meristem activity, plant stem cells, embryogenesis and organogenesis, signal transduction and plant hormones. Molecular techniques such as recombinant DNA techniques, protein targeting, gene and protein expression analysis, and mutant screening are used. The course connects research at Umeå Plant Science Centre. The course is divided into the following sections: Theory 10,5 ECTS, Littreature study with seminar 1,5 ETCS, Practicals 3 ETCS.