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Evidence on the origin of the g genome in wheat cytology and fertility of a triticum timopheevi like mutant


, : Evidence on the origin of the g genome in wheat cytology and fertility of a triticum timopheevi like mutant. Canadian Journal of Genetics & Cytology 25(6): 651-661

A spontaneous somatic mutant with T. timopheevi Zhuk. plant morphology was found in late tillers of a T. turgidum L. var. dicoccoides (Bowden) plant. Hybrids of the timopheevi-like mutant with T. turgidum L. var. dicocooides (Bowden), T. timopheevi Zhuk. and T. araraticum Jakubz. exhibited irregular pairing at meiosis and sterility, almost normal pairing and fertility, and relatively high pairing and sterility, respectively. This evidence and that of karyotype changes in the somatic mutant indicated that it was differentiated from T. turgidum var. dicoccoides through chromosome interchanges. This mutation, believed to arise through chromosome rearrangement, is discussed in relation to the origin of the G genome of T. timopheevi.

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