Combining Ability for Male Fertility and Yield in Hybrid Winter Wheat

Sampson, D.R.; Robinson, H.G.

Canadian Journal of Plant Science 59(4): 975-980


ISSN/ISBN: 0008-4220
DOI: 10.4141/cjps79-154
Accession: 068494047

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Sixty-seven F1 winter wheat hybrids (Triticum aestivum) between eight cytoplasmic male sterile (cms) lines with T. timopheevi cytoplasm and 10 fertility restoration (Rf) lines carrying restoration genes from T. timopheevi, T. spelta and T. aestivum 'Primepi' were analyzed for male sterility and grain yield in a field trial. Both male and female parents showed wide differences in the male fertility and yield of their hybrid arrays. However, the parental effects were largely additive. Two cms lines 8780 E5 and Mironovskaya 808 were outstanding for ease of restoration compared to several soft white winter wheat cultivars. Mironovskaya 808 also showed high combining ability for yield. The two best restored hybrids had 96% male fertility.