1. National Key Facility of Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences; Chinese Academy of Agricultural Sciences; Beijing 100081 P.R. China
2. Key Laboratory of Genetics and Biotechnology; College of Life Science, Capital Normal Univ.; 100048 Beijing P.R. China
3. Dep. of Plant Pathology; Kansas State Univ.; Manhattan KS 66506
4. Beijing Hybrid Wheat Research Center; Beijing Academy of Agriculture and Forestry Sciences; Beijing 100089,