Production and cytogenetic analysis of BC1, BC2, and BC3 progenies of an intergeneric hybrid between Triticum aestivum (L.) Thell. and tetraploid Agropyron cristatum (L.) Gaertn.

1992 ◽  
Vol 84-84 (5-6) ◽  
pp. 698-703 ◽  
Author(s):  
Q. Chen ◽  
J. Jahier ◽  
Y. Cauderon
Keyword(s):  
Triticum Aestivum ◽  
Cytogenetic Analysis ◽  
Intergeneric Hybrid ◽  
Triticum Aestivum L ◽  
Agropyron Cristatum

An interspecific hybrid and amphiploid produced from Triticum aestivum crosses with Agropyron cristatum and Agropyron desertorum

Genome ◽  
1990 ◽  
Vol 33 (4) ◽  
pp. 581-584 ◽  
Author(s):  
A. E. Limin ◽  
D. B. Fowler
Keyword(s):  
Triticum Aestivum ◽  
Interspecific Hybrid ◽  
Intergeneric Hybrid ◽  
Colchicine Treatment ◽  
Triticum Aestivum L ◽  
Agropyron Cristatum ◽  
Homoeologous Pairing ◽  
Agropyron Desertorum ◽  
Hybrid Plants ◽  
Homoeologous Relationships

Agropyron cristatum L. Gaertner (2n = 14) and Agropyron desertorum (Fisch. ex Link) Schultes (2n = 28) cultivars were crossed with common wheat (Triticum aestivum L. em. Thell. 2n = 42, ABD genomes) in an attempt to bring the P genome of Agropyron into a wheat background for future genetic exploitation and to evaluate possible homoeology with the wheat genomes. Interspecific hybrid plants were obtained from crosses using both Agropyron species. Chromosome doubled amphiploids (2n = 56, AABBDDPP) were successfully produced by colchicine treatment of hybrid plants from the T. aestivum – A. cristatum cross. Meiotic cells of the amphiploid contained the expected 28 chromosome pairs but also exhibited a considerable amount of chromosome pairing disturbance, resulting in an average of 3.55 univalents per cell. Consequently, fertility was reduced in the amphiploid and the progeny were frequently aneuploid. Homoeologous pairing in the T. aestivum – A. cristatum hybrid was low, but the pairing disruption exhibited in the amphiploid suggested that homoeologous relationships may have been masked in the hybrid.Key words: Triticum aestivum, Agropyron cristatum, chiasma frequency, intergeneric hybrid, amphiploid.

An intergeneric hybrid of Triticum aestivum L. X Elymus giganteus

1981 ◽  
Vol 72 (4) ◽  
pp. 253-256 ◽  
Author(s):  
A. Mujeeb-Kazi ◽  
R. Rodriguez
Keyword(s):  
Triticum Aestivum ◽  
Intergeneric Hybrid ◽  
Triticum Aestivum L

Production and cytogenetic analysis of hybrids between Triticum aestivum and some caespitose Agropyron species

Genome ◽  
1987 ◽  
Vol 29 (4) ◽  
pp. 537-553 ◽  
Author(s):  
Abdul Mujeeb-Kazi ◽  
Silverio Roldan ◽  
D. Y. Suh ◽  
Lesley A. Sitch ◽  
Shafqat Farooq
Keyword(s):  
Triticum Aestivum ◽  
Chinese Spring ◽  
Cytogenetic Analysis ◽  
Triticum Aestivum L ◽  
Intergeneric Hybrids ◽  
The Other ◽  
Meiotic Pairing ◽  
New Combinations ◽  
Wide Crosses ◽  
Major Variation

Intergeneric hybrids between Triticum aestivum L. cultivars and 12 traditional Agropyron species were produced in variable frequencies, lowest being 0.35% for A. stipaefolium to a high of 41.98% for A. varnense. The crossing success of T. aestivum cultivars ranged from 'Chinese Spring' > 'Pavon-76' = 'Nacozari-75' > 'Fielder' = 'Fremont' > 'Glennson-81'. All F1 hybrids were somatically stable. The new combinations were with A. curvifolium (Thinopyrum curvifolium), A. rechingeri (T. sartorii = rechingeri), A. scythicum (T. scythicum), and A. stipaefolium (Pseudoroegeneria stipaefolia). All hybrids were perennial and possessed a modified phenotype that was intermediate between the parents involved in the hybrid combinations with major variation in spike morphology (elongated spikes with lax internodes). High-pairing hybrids, presumably owing to suppression of the Ph locus were of T. aestivum - A. scythicum (15.31 I + 2.25 II rings + 6.92 II rods + 0.32 III) and T. aestivum - A. stipaefolium (10.6 I + 7.08 II rings + 4.41 II rods + 0.54 III). In the other combinations, the pairing was either low or high, and if high, pairing was attributed to autosyndetic association of the alien genome chromosomes. Based on the meiotic pairing data, alien species that were segmental allotetraploids or partial autopolyploids, or segmental allohexaploids or autoallohexaploids, may be advantageous in developing backcross derivatives with synthetic genomes. Production of fertile amphiploids was restricted to T. aestivum - A. rechingeri. Key words: Triticum aestivum, Agropyron species, Pseudoroegeneria species, Thinopyrum species, intergeneric hybrids, crossability, wide crosses.

Changes in the fertility and meiotic behaviour of barley (Hordeum vulgare) × wheat (Triticum aestivum) hybrids regenerated from tissue cultures

Genome ◽  
1991 ◽  
Vol 34 (2) ◽  
pp. 261-266 ◽  
Author(s):  
M. Molnár-Láng ◽  
G. Galiba ◽  
G. Kovács ◽  
J. Sutka
Keyword(s):  
Triticum Aestivum ◽  
Hordeum Vulgare ◽  
Seed Set ◽  
Intergeneric Hybrid ◽  
Triticum Aestivum L ◽  
Meiotic Behaviour ◽  
Tissue Cultures ◽  
Hordeum Vulgare L ◽  
Regenerant Plants

A total of 41 regenerant plants were raised from two consecutive in vitro propagation cycles from a barley (Hordeum vulgare L. cv. Martonvásári 50) × wheat (Triticum aestivum L. cv. Chinese Spring) hybrid. The second-cycle regenerants exhibited great variability for most morphological traits. The female fertility of certain regenerant hybrids considerably exceeded that of the initial hybrid, giving substantially higher seed set when pollinated with wheat. This character was transferred to the BC1 and BC2 progeny produced from the regenerants. The cytological analysis of the second-cycle regenerants indicated that these had a higher degree of meiotic instability than the initial hybrid. The proportion of cells with 28 chromosomes (21 wheat + 7 barley) dropped to one-half of that in the initial hybrid, with a rise in the number of hypoploid and hyperploid cells. The number of chiasmata per cell increased from 1.7 in the initial hybrid to 4.7 in the regenerants, and there was also an increase in the number of misdivisions.Key words: intergeneric hybrid, tissue culture, fertility, meiotic behaviour, somaclonal variation.

ELECTRON PROBE ANALYSIS OF SAP EXUDATES OF TWO VARIETIES OF WHEAT (TRITICUM AESTIVUM L.)

1984 ◽  
Vol 45 (C2) ◽  
pp. C2-515-C2-518
Author(s):  
S. Gartner ◽  
N. Roinel ◽  
N. Paris-Pireyre
Keyword(s):  
Triticum Aestivum ◽  
Electron Probe ◽  
Triticum Aestivum L ◽  
Electron Probe Analysis ◽  
Probe Analysis

LA SILICE CHEZ LE BLÉ (TRITICUM AESTIVUM L.). COMPARAISON ENTRE UNE VARIÉTÉ SENSIBLE ET UNE VARIÉTÉ RÉSISTANTE À LA VERSE

1984 ◽  
Vol 45 (C2) ◽  
pp. C2-511-C2-514 ◽  
Author(s):  
S. Gartner ◽  
N. Paris-Pireyre
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L

Antiproliferative and apoptotic effects of wheatgrass (Triticum aestivum L.) extracts on chronic myeloid leukemia (CML) cell line

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
A Karadag ◽  
T Ozkan ◽  
B Altınok ◽  
S Aydos ◽  
A Sunguroglu
Keyword(s):  
Triticum Aestivum ◽  
Chronic Myeloid Leukemia ◽  
Cell Line ◽  
Myeloid Leukemia ◽  
Triticum Aestivum L ◽  
Apoptotic Effects
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