1. Laboratory of Genetic Resources, Federal University of Alagoas, Arapiraca, AL, Brazil
2. Laboratory of Plant Cytogenetics and Evolution, Department of Botany, Federal University of Pernambuco, Recife, Brazil
3. Laboratory of Biotechnology, Embrapa Semi-arid, Petrolina, Brazil
4. Embrapa CENARGEN, Brasília, Brazil
5. Queen Mary University of London, London, UK