Abstract
The F1 hybrids from crosses of 59 accessions of wild and cultivated Triticum types including amphidiploids T. boeoticum-Ae. squarrosa, T. timopheevi-Ae. squarrosa, T. timopheevi-T. monococcum, T. boeoticum (4n), T. macha, and T. Zhukovskyi with T. durum Sel. 56-1 and/or T. aestivum were examined for male sterility and chromosome pairing at metaphase I of meiosis in pollen mother cells. Those hybrids which produced male-sterile F1's were recurrently backrossed with pollen from T. durum or T. aestivum to study segregation for male sterility and/or to confirm cytoplasmic male sterility.
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