CYTOGENETICAL RELATIONSHIPS OF TWO TYPES OF &lt;i&gt;TRITICUM ARARATICUM&lt;/i&gt; JAKUBZ. TO OTHER TETRAPLOID WHEAT SPECIES

Tanaka, Masanori; Ichikawa, Sadao

doi:10.1266/jjg.47.103

Cited by 17 publications

(9 citation statements)

References 11 publications

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“…This behaviour gives further indication of chromosome similarity between the mutant and T. timopheevi since hybrids between the latter and T. araraticum, in spite of high chromosome pairing at meiosis, were found to be sterile (Svetozarova 1939;Sachs 1953;Wagenaar 1966). Only one exception was reported by Ichikawa (1968, 1972) who found a strain of T. araCan. J. Genet.…”

Section: Hybridsmentioning

confidence: 81%

“…speltoides contributed the G genome of T. timopheevi but not the B genome of T. turgidum. However, Sachs (1953), Wagenaar ( 196 1 ), and Tanaka and Ichikawa ( 1972), using evidence of pairing between T. timopheevi and T . turgidum chromosomes, Aniol (1973) using evidence from serological tests, and Gerlach et al ( 1978) using evidence from satellite DNA hybridization, proposed a common monophyletic origin of the B and G genomes .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant

Kushnir¹,

Halloran²

1983

Can. J. Genet. Cytol.

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A spontaneous somatic mutant with Triticum timopheevi Zhuk. plant morphology was found in late tillers of a Triticum 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 plus that of karyotype changes in the somatic mutant indicated that it was differentiated from T. turgidum 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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Section: Hybridsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant

Kushnir¹,

Halloran²

1983

Can. J. Genet. Cytol.

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“…Five misclassified ARA-0 accessions from USDA-ARS collection were from Siirt, Turkey, however in other gene bank three of these accessions were treated as T. araraticum. Relatively good chromosome pairing was observed in the F 1 hybrids of some T. araraticum x T. timopheevii combinations (Tanaka and Ichikawa 1972), however, pollen fertility of such hybrids was very low (0.3 -5.4%). ARA-1 could be derived from ancient hybridization of T. timopheevii × T. dicoccoides; or alternatively, ARA-1 and TIM could be derived from the hybridization ARA-0 × T. dicoccoides.…”

Section: The Karyotypic Composition Of Gga T a T Wheats Is As Complex As The Phylogenetic History Of The Gga T A T Genepoolmentioning

confidence: 95%

Genetic diversity, distribution and domestication history of the neglected GGA^tA^tgenepool of wheat

Бадаева

Коновалов

Knüpffer

et al. 2021

Preprint

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BackgroundWheat yields are stagnating around the world and new sources of genes for resistance or tolerances to abiotic traits are required. In this context, the tetraploid wheat wild relatives are among the key candidates for wheat improvement. Despite of its potential huge value for wheat breeding, the tetraploid GGAtAt genepool is largely neglected. Understanding the population structure, native distribution range, intraspecific variation of the entire tetraploid GGAtAt genepool and its domestication history would further its use for wheat improvement.ResultsWe report the first comprehensive survey of genomic and cytogenetic diversity sampling the full breadth and depth of the tetraploid GGAtAt genepool. We show that the extant GGAtAt genepool consists of three distinct lineages. We provide detailed insights into the cytogenetic composition of GGAtAt wheats, revealed group-, and population-specific markers and show that chromosomal rearrangements play an important role in intraspecific diversity of T. araraticum. We discuss the origin and domestication history of the GGAtAt lineages in the context of state-of-the-art archaeobotanical finds.ConclusionsWe shed new light on the complex evolutionary history of the GGAtAt wheat genepool. We provide the basis for an increased use of the GGAtAt wheat genepool for wheat improvement. The findings have implications for our understanding of the origins of agriculture in southwest Asia.

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“…The cytogenetical behavior of these tester strains was described by Tanaka and Ichikawa (1972) and by Tanaka and Ishii (1975).…”

Section: Methodsmentioning

confidence: 99%

SIX CHROMOSOME TYPES IN <i>TRITICUM ARARATICUM</i> JAKUBZ. DIFFERING WITH RECIPROCAL TRANSLOCATIONS

Kawahara

Tanaka

1977

Jpn J Genet.

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CYTOGENETICAL RELATIONSHIPS OF TWO TYPES OF <i>TRITICUM ARARATICUM</i> JAKUBZ. TO OTHER TETRAPLOID WHEAT SPECIES

Cited by 17 publications

References 11 publications

Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant

Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant

Genetic diversity, distribution and domestication history of the neglected GGA^tA^tgenepool of wheat

SIX CHROMOSOME TYPES IN <i>TRITICUM ARARATICUM</i> JAKUBZ. DIFFERING WITH RECIPROCAL TRANSLOCATIONS

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CYTOGENETICAL RELATIONSHIPS OF TWO TYPES OF <i>TRITICUM ARARATICUM</i> JAKUBZ. TO OTHER TETRAPLOID WHEAT SPECIES

Cited by 17 publications

References 11 publications

Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant

Evidence on the origin of the G genome in wheat: cytology and fertility of a T. timopheevi-like mutant

Genetic diversity, distribution and domestication history of the neglected GGAtAtgenepool of wheat

SIX CHROMOSOME TYPES IN <i>TRITICUM ARARATICUM</i> JAKUBZ. DIFFERING WITH RECIPROCAL TRANSLOCATIONS

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Genetic diversity, distribution and domestication history of the neglected GGA^tA^tgenepool of wheat