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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.

Accession: 005411864

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Related references

Kushnir, U.; Halloran, G.M., 1983: Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant. A spontaneous mutant with Triticum timopheevii-like morphology was found among late tillers of a T. turgidum var. dicoccoides plant. Hybrids of the mutant with its parent and with T. timopheevii and T. araraticum showed irregular meiotic chromosom...

Kushnir U.; Halloran G.M., 1983: Evidence on the saltatory origin of the g genome in wheat the description of a triticum timopheevi like mutant. A spontaneously occurring somatic mutant of T. turgidum dicoccoides showed close morphological resemblance to T. timopheevi (AAGG). The hybrid between the mutant and the T. turgidum dicoccoides mother plant was completely sterile, with very low po...

Kushnir, U.; Halloran, G.M., 1983: Evidence on the origin of the G genome in wheat: physiological and quantitative character variation in a Triticum timopheevi-like mutant. Among 350 lines of T. turgidum var. dicoccoides [T. dicoccoides] from Israel, a plant of the variety spontaneum nigrum was noticed which developed four late tillers with T. timopheevii-like morphology; this mutation was shown to be heritable. Stud...

Wagenar Wagenaar, E.B., 1966: Studies on the genome constitution of Triticum timopheevi Zhuk. II. The T. timopheevi complex and its origin. Introductions belonging to the wild-growing tetraploid timopheevi group of wheats and collected in the Transcaucasian states of the USSR, northern Iraq and eastern Turkey were intercrossed and the subsequent F1 hybrids studied cytologically. Chrom...

Apltauerova M.; Stehno Z.; Holubec V., 1982: Pollen fertility restoration in wheat carrying triticum timopheevi triticum zhukovskyi and triticum timonovum cytoplasms. Pollen fertility restoration was investigated in F1 generations after crossing spring wheat male steriles obtained on T. timopheevi, T. zhukovskyi, and T. timonovum cytoplasms with Wilson and Prof. Marchal as Rf gene donors. The latter mentioned f...

Agadzhanyan E.A., 1968: Comparative study of the length of the mitotic cycle in wheat m depending on fertility triticum delfi m triticum monococcum m triticum timopheevi m. Biologicheskii Zhurnal Armenii 21(4): 70-74

Nettevic, E.D., 1969: Studies on the effect of fertility restoration in male-sterile forms of wheat with the cytoplasm of Triticum timopheevi Zhuk. (A contr1bution to the genetics of the fertility-restoring character in wheat with CMS). Studies of 15 analogues derived from T. timopheevi showed T. timopheevi x Marquis2 to be the best restorer: in crosses with sterile analogues of the spring wheat Minsk it gave 70.5% fertility. In further tests, T. spelta var. duhamelianum gave onl...

Kolasinska I., 1975: Restoring of pollen fertility in male sterile lines of wheat triticum timopheevi triticum aestivum. Hodowla Roslin Aklimatyzacja i Nasiennictwo 19(3): 223-244

Gomaa A.S.A.; Lucken K.A., 1973: Male fertility and plant vigor restoration in common wheat with triticum timopheevi and triticum boeoticum cytoplasms. Sears, E R And L M S Sears (Ed ) Proceedings Of The Fourth International Wheat Genetics Symposium Columbia, Mo , U S A , Aug 6-11, Xii+955p Illus Agricultural Experiment Station, College Of Agriculture, University Of Missouri: Columbia, Mo , U S A 345-350

Lyfenko, Sf, 1980: Some genetic peculiarities of the character of male fertility restoration in soft winter wheat (Triticum aestivum) with the cytoplasm of Triticum timopheevi. Uzbekskii biologicheskii zhurnal: ) 13-16