Monosomes and their Influence on Meiosis in ‘Holdfast’ (&lt;i&gt;Triticum aestivum&lt;/i&gt; L.)

Khan, Shams-ul-Islam

doi:10.1508/cytologia.27.386

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…somy has also been reported earlier in wheat (Morrison 1953, Khan 1962) and tobacco (Clausen and Cameron 1944). At metaphase I, the univalent was invariably found lying off the met aphase plate.…”

supporting

confidence: 77%

Monosomics in Egyptian henbane, Hyoscyamus muticus L. I. Meiotic behaviour and fertility.

Tyagi

Dhawan

1988

CYTOLOGIA

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supporting

confidence: 77%

Monosomics in Egyptian henbane, Hyoscyamus muticus L. I. Meiotic behaviour and fertility.

Tyagi

Dhawan

1988

CYTOLOGIA

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“…The high frequency of these variant individuals in wheat is thought to be tolerated because of the so-called ' 'buffer effect" of polygloidy (Mac Key, 1967). However, very few references to chromosomal variation within cells or tissues of untreated wheat plants were found: Sears and C h a r a (1952) reported a transmissible dicentric chromosome, possibly originating from an isschromosome; Khan (1962) found cells of some individuals with morphological modifications at the satellite and Zeven et a%. (1970) found numerical variation in somatic and meiotic cells of Pugsley's sterile wheat.…”

Section: Introductionmentioning

confidence: 99%

Somatic Instability in the Brazilian Semi-Dwarf Wheat Ias 54

Guerra¹,

Fernandes²

1977

Can. J. Genet. Cytol.

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The mitotic chromosome behavior of the Brazilian semi-dwarf wheat cultivar IAS 54 (Triticum aastivum L. em Tell) is described. In root tip cells dicentrics, fragments, isochromosomes, a satellite tandemly duplicated, chromatid exchanges, aneuploidy, ring chromosomes and breaks in almost all chromosomes of the complement were observed. Since anaphase cells that were not pretreated showed bridges, disorderly condensation and micronwlei, the possibility that pretreatment was responsible for the abnormalities was eliminated. Other possible genetic factors and virus infection as causal agents were discussed. Ees travaux ont p o d sur le comportement des chromosomes mitotiques du cultivar du bl6 brisilien semi-nain IAS 54 (Triticum aestivum E. em Tell). Dans les cellules h I'extrCmitC des racines on a observt des dicentriques, des fragments, des isochromosomes, un satellite dsublC en tandem, des Cchanges chromatidiques, l'aneuploi'die, Qes chromosomes en anneaux, et des bris dans presque tous les chromosomes de la garniture chromosomique. On a Climint au depart Ia possibilitC que le prktraitement soit responsable des anomalies, itant donnC que les cellules anaphasiques non-traitkes manifestaient aussi des ponts, une condensation disordonnie et des micronoyaux. On discute d'autres muses possibles, soit d'autres facteurs d'ordre ghiitique, et I'infection vbale. [Traduit par le journal] "C&UUQ Especid de Pbs-Grrmdimgiio e Pesqmrfsa da Universidade Federal do Rio G r a d e do Sul". Work of the senior author was done in partial fulfiment of the M.S. degee at the Federal University of Rio Grtmde do Sul. wesent address: Pemmbuco. Reprints should be requested to M. heme M. Femmdes, C.N.P. Trigo-EMBRAPA cx Psstal569, 99. 100 RUSQ Fundo RS-Br.

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