supported by the National High Technology Research and Development Program of China (Grant No. 2006AA10Z174);the National Key Technology Research and Development Program of China (Grant No.2006BAD13B02)
P chromosomes may carry a genetic system that inhibits the Ph gene in wheat. Abnormal chromosome synapsis in wheat-Agropyron cristatum addition line II-21-2 (additional 1·4 recombinant P chromosome) was observed in t...