NOTE ON THE INHERITANCE OF DS; A GENE GOVERNING MEIOTIC CHROMOSOME BEHAVIOUR IN BARLEY

1960 ◽  
Vol 40 (3) ◽  
pp. 570-571 ◽  
Author(s):  
H. Enns ◽  
E. N. Larter
Keyword(s):  
Meiotic Chromosome ◽  
Chromosome Behaviour

not available

Meiotic chromosome behaviour in Cenchrus ciliaris

Bothalia ◽  
1998 ◽  
Vol 28 (1) ◽  
pp. 83-90 ◽  
Author(s):  
N. C. Visser ◽  
J. J. Spies
Keyword(s):  
Chromosome Number ◽  
Meiotic Chromosome ◽  
Basic Chromosome Number ◽  
Chromosome Behaviour ◽  
Meiotic Abnormalities ◽  
Single Specimen ◽  
Cenchrus Ciliaris ◽  
Basic Chromosome ◽  
Single Genome ◽  
Meiotic Irregularities

A basic chromosome number of x = 9 has been confirmed for Cenchrus ciliaris L. Polyploidy is common and levels vary from tetraploid to hexaploid. Aneuploidv is reported for a single specimen, where two chromosomes of a single genome were lost. Various meiotic irregularities were observed. The highest incidence of meiotic abnormalities was observed in the pentaploid specimens. This was attributed to their uneven polyploid level All specimens varied from segmental alloploid to alloploid.

Chromosome instability in wheat plants regenerated from suspension culture

Genome ◽  
1987 ◽  
Vol 29 (4) ◽  
pp. 627-629 ◽  
Author(s):  
George Fedak ◽  
K. C. Armstrong ◽  
R. J. Handyside
Keyword(s):  
Triticum Aestivum ◽  
Suspension Culture ◽  
Key Words ◽  
Chinese Spring ◽  
Meiotic Chromosome ◽  
Chromosome Instability ◽  
Wheat Chromosome ◽  
Chromosome Behaviour ◽  
Meiotic Configuration ◽  
Culture Suspension

Plants of Triticum aestivum cv. Chinese Spring were regenerated from 30 calli obtained from suspension cultures. All four plants showed abnormal meiotic chromosome behaviour relative to the control. The average meiotic configuration over all plants was 1.55 I + 18.16 II + 0.30 III + 0.82 IV. In addition, an isochromosome was frequently observed in cells of all plants, which was indicative of centromeric breaks. Key words: culture (suspension), wheat, chromosome instability.

scholarly journals Meiotic Chromosome Behaviour in Clitoria ternatea L. and C. biflora Dalz.

CYTOLOGIA ◽  
1994 ◽  
Vol 59 (1) ◽  
pp. 103-107
Author(s):  
Supriya Gandhi ◽  
V. P. Patil
Keyword(s):  
Meiotic Chromosome ◽  
Chromosome Behaviour ◽  
Clitoria Ternatea

A LIGHT-MICROSCOPIC STUDY OF SOME TRANSLOCATIONS IN ASPERGILLUS NIDULANS

1978 ◽  
Vol 20 (3) ◽  
pp. 325-328 ◽  
Author(s):  
E. R. Boothroyd
Keyword(s):  
Aspergillus Nidulans ◽  
Meiotic Chromosome ◽  
Low Frequency ◽  
Chromosome Analysis ◽  
Chromosome Behaviour ◽  
Structural Detail ◽  
Linkage Groups ◽  
Limited Evidence ◽  
Control Material ◽  
Reciprocal Translocations

A cytological investigation of the ascomycete, Aspergillus nidulans (Eidam) Winter, was undertaken to test the feasibility of using simple light-microscopial techniques to study chromosome aberrations for the correlation of chromosomes and linkage groups in this genetically well analysed fungus. Pachytene chromosome analysis was not possible, because the chromosomes are very small, do not spread well when squashed, and show very little structural detail. Some catenations were seen at first metaphase in translocation heterozygotes either as dense masses or, more rarely, as open rings. Lagging chromosomes were also seen at low frequency in both first and second anaphase and telophase in translocation but not in control material. The limited evidence from the study shows that meiotic chromosome behaviour in Aspergillus nidulans heterozygous for reciprocal translocations is probably similar to that in some higher organisms. However, the species is not suitable for detailed cytological analysis, at least by the techniques employed.

Pollination systems, hybridization barriers and meiotic chromosome behaviour in Nemesia hybrids

Euphytica ◽  
2006 ◽  
Vol 151 (2) ◽  
pp. 173-185 ◽  
Author(s):  
Paul M. Datson ◽  
Brian G. Murray ◽  
Keith R. W. Hammett
Keyword(s):  
Meiotic Chromosome ◽  
Chromosome Behaviour ◽  
Pollination Systems
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