1. 5007 Riverside Oaks Dr. KingwoodTX77345
2. Chair of Agronomy and Plant Breeding, Centre for Life and Food Sciences WeinhenstephanTechnical Univ. Munich Am Hochanger 2 85350FreisingGermany
3. Seameo BiotropSoutheast Asian Regional Centre for Tropical Biology Jalan Raya Tajur km. 6, P.O. Box 116 Bogor Indonesia
4. CIMMYT Lisboa 27, Apto. Postal 6-641 06600 Mexico Mexico D.F.
5. Dep. of Crop GeneticsJohn Innes Centre Norwich Research Park Colney Norwich NR4 7UH UK