The goal of our research is to identify and utilize genes to extend the environmental adaptation and utilization of alfalfa. Since the 1920's geneticists have employed recurrent phenotypic selection to improve alfalfa for resistance to diseases, insects and abiotic stress, extend geographic adaptability and more recently to improve nutritional quality, yield and persistence. However, the genes responsible for these traits remain largely unknown. Comprehensive genomic analysis of alfalfa is limited due to the large size of the genome and obligately outcrossing tetraploid nature of alfalfa. Furthermore, the basic tools required for modern genome analysis are largely not available in alfalfa.
The main areas of research are: (1) identification of genes involved in disease resistance; (2) identification of genes for aluminum tolerance; (3) quantification of genetic diversity and mechanisms of pathogenesis in Phoma medicaginis , the causal agent of spring black stem and leaf spot of alfalfa, and Phoma sclerotioides , the causal agent of brown root rot of alfalfa; (4) biotechnological approaches to improving forage quality, value and adapation.
