Immature Embryo-Derived of Two Bread Wheat (Triticum aestivum L.) Varieties Transformation Using Particle Bombardment Method

2014 ◽  
Vol 4 (24) ◽  
pp. 3904-3914
Author(s):  
D. Ekom
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Particle Bombardment ◽  
Immature Embryo ◽  
Triticum Aestivum L

Nonrandom chromosome variation and morphogenic potential in cell lines of bread wheat (Triticum aestivum L.)

Genome ◽  
1995 ◽  
Vol 38 (5) ◽  
pp. 869-878 ◽  
Author(s):  
M. O. Winfield ◽  
A. Karp ◽  
M. Schmitt ◽  
H. Lörz ◽  
M. R. Davey
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Cell Lines ◽  
Chromosome Numbers ◽  
Chromosome Instability ◽  
Immature Embryo ◽  
Triticum Aestivum L ◽  
Chromosome Loss ◽  
Chromosome Variation ◽  
Cytogenetical Analysis

A cytogenetical analysis of 18 cell lines, 9 microspore derived, 6 anther derived, and 3 immature-embryo derived, of bread wheat (Triticum aestivum L.) varying in their morphogenic potential was undertaken. Chromosome variation, both structural and numerical, was detected in all lines studied. Variation was present and, in some cases quite extensive, in the earliest samples taken (only 12 weeks after initiation of the suspensions). Within any culture, the pattern and extent of variation changed throughout the course of the study and cells with a euploid constitution generally decreased in frequency with culture age. Among the nine microspore-derived suspensions, morphogenic lines generally showed a more restricted range of chromosome numbers and higher proportions of euploid cells than nonmorphogenic lines. The patterns of distribution of chromosome numbers among the anther-derived cultures were similar to those of the microspore-derived lines but the correspondence between instability and regenerative capacity was less. The immature embryo derived lines, which were neither regenerable nor morphogenic, were all unstable. The anther-derived lines were sampled over several months to determine whether loss of morphogenic potential was related to changes in chromosome instability of specific lines. Analysis of the "elite" line Fl.7, initially capable of regenerating green plants, showed that substantial decreases in the frequencies of normal euploid cells (from 45 to 5%) occurred over the period when morphogenic capacity was lost. However, whether the chromosome instability resulted in loss of morphogenicity or vice versa was not clarified. C-banding analyses of lines Fl.7 and C82d indicated that instability was not random with respect to the three genomes (A, B, and D) of wheat nor to the different chromosomes within the genomes. Chromosomes of the B genome were most often lost or involved in rearrangements, with breakpoints located at, or near, the heterochromatic blocks. Because of the heterogeneity of the cell lines, extensive analyses of large numbers of cells would be required before it would be possible to determine whether loss of morphogenic potential arises as a result of specific chromosome loss(es).Key words: somaclonal variation, wheat, chromosomes, heterochromatin, cell cultures.

Effect of Cold Pretreatment and Incubation Temperature on Bread Wheat (Triticum aestivum L.) Anther Culture

2001 ◽  
Vol 29 (3-4) ◽  
pp. 331-338 ◽  
Author(s):  
I. N. Xynias ◽  
I. A. Zamani ◽  
E. Gouli-Vavdinoudi ◽  
D. G. Roupakias
Keyword(s):  
Triticum Aestivum ◽  
Anther Culture ◽  
Bread Wheat ◽  
Incubation Temperature ◽  
Triticum Aestivum L ◽  
Cold Pretreatment

scholarly journals QTL mapping of seedling biomass and root traits under different nitrogen conditions in bread wheat (Triticum aestivum L.)

2021 ◽  
Vol 20 (5) ◽  
pp. 1180-1192
Author(s):  
Meng-jiao YANG ◽  
Cai-rong WANG ◽  
Muhammad Adeel HASSAN ◽  
Yu-ying WU ◽  
Xian-chun XIA ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Qtl Mapping ◽  
Bread Wheat ◽  
Root Traits ◽  
Triticum Aestivum L ◽  
Seedling Biomass ◽  
Nitrogen Conditions

Genetic relationships between resistances to Fusarium head blight and crown rot in bread wheat (Triticum aestivum L.)

2010 ◽  
Vol 121 (5) ◽  
pp. 941-950 ◽  
Author(s):  
Hao Bing Li ◽  
Guo Qiang Xie ◽  
Jun Ma ◽  
Gui Ru Liu ◽  
Shu Min Wen ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Fusarium Head Blight ◽  
Bread Wheat ◽  
Genetic Relationships ◽  
Triticum Aestivum L ◽  
Crown Rot ◽  
Head Blight

scholarly journals Genetic and in silico comparative mapping of the polyphenol oxidase gene in bread wheat (Triticum aestivum L.)

2005 ◽  
Vol 6 (1) ◽  
pp. 81-81
Author(s):  
Rosy Raman ◽  
Harsh Raman ◽  
Katie Johnstone ◽  
Chris Lisle ◽  
Alison Smith ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Polyphenol Oxidase ◽  
Comparative Mapping ◽  
In Silico ◽  
Triticum Aestivum L ◽  
Oxidase Gene
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