Fertility restoration capacity of four restorers in hybrids with CMS lines having Triticum timopheevi cytoplasm

Fertility restoration capacity of four exotic Rf-sources (W 8156, 3401/478466, PE/YQ and R3–401) in five CMS lines (msHD 2204, msHD 2260, msHP 1102, msUP 368 and msWH 157) with T. timopheevi cytoplasm and their reciprocal crosses was studied in two sets during 1983 and 1984. The set I included A X R and set 11 R X B crosses. The significant differences in the fertility restoration capacity of all the Rf-sources studied were observed in both the years. R X B crosses showed better seed set than their respective A X R crosses. During both crop seasons msHD 2204 X PE/YQ in set I gave the highest seed set while msUP 368 gave consistently high seed set with all restorers.