Production and cytogenetic analysis of the intergeneric hybrids between nine Elymus species and common wheat (Triticum aestivum L.)

Euphytica ◽  
1991 ◽  
Vol 58 (1) ◽  
pp. 81-95 ◽  
Author(s):  
Bao-Rong Lu ◽  
Roland von Bothmer
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Cytogenetic Analysis ◽  
Triticum Aestivum L ◽  
Intergeneric Hybrids ◽  
Elymus Species

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.

The influence of etephon on yield components of common wheat (Triticum aestivum L.) cv. Bezostaya isogenic lines with Rht genes

2008 ◽  
Vol 63 (3) ◽  
Author(s):  
Krzysztof Kowalczyk ◽  
Agnieszka Jakubczak ◽  
Michał Nowak
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Yield Components ◽  
Triticum Aestivum L ◽  
Isogenic Lines ◽  
Rht Genes

Pleiotropic effects of Ppd-A1 gene on yield and its components in Mercia recombinant lines of common wheat (Triticum aestivum L.) in Poland

2008 ◽  
Vol 63 (3) ◽  
Author(s):  
Krzysztof Kowalczyk ◽  
Danuta Miazga ◽  
Anthony Worland ◽  
Agnieszka Jakubczak
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Triticum Aestivum L ◽  
Pleiotropic Effects

Effects of an Agropyron chromosome on endosperm proteins in common wheat (Triticum aestivum L.)

1980 ◽  
Vol 18 (5-6) ◽  
pp. 465-482 ◽  
Author(s):  
K. M. Soliman ◽  
J. E. Bernardin ◽  
C. O. Qualset
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Triticum Aestivum L ◽  
Endosperm Proteins

Transmission of a wheat alien chromosome translocation with resistance to the wheat curl mite in common wheat, Triticum aestivum L.

1986 ◽  
Vol 28 (2) ◽  
pp. 294-297 ◽  
Author(s):  
E. D. P. Whelan ◽  
R. L. Conner ◽  
J. B. Thomas ◽  
A. D. Kuzyk
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Triticum Aestivum L ◽  
Chromosome Translocation ◽  
Chromosome 6 ◽  
Selfed Progeny ◽  
Wheat Curl Mite ◽  
Aceria Tulipae ◽  
Group 6 ◽  
Homozygous Resistant

A translocation between a common wheat (Triticum aestivum L.) chromosome and chromosome 6 of Elytrigia pontica (Podp.) Holub conferred resistance to feeding by Eriophyes (= Aceria) tulipae Keifer, the mite vector of wheat streak mosaic virus and the wheat spot mosaic agent. Resistance was dominant, but differential transmission occurred between the pollen and the egg. Transmission of resistance through the pollen was low, about 3% in 'Cadet', 'Rescue', and 'Winalta', but significantly higher in 'Norstar' (9.1%). Significant differences also were detected in transmission through the egg. 'Cadet' had the highest transmission (50.9%) and 'Rescue' the lowest (40.5%). However, there were no significant differences among varieties in the frequencies of resistance (50.3–54.5%) in the F2. Less than 10% of the F2 plants were homozygous resistant. Selfed progeny from monosomic or disomic F1 plants from crosses between the homozygous translocation and group-6 monosomics all segregated for susceptibility. Meiotic studies of 25 susceptible F2 plants from these F1 monosomics showed that 21 were either monosomic or disomic and only 4 were nullisomic, indicating that the translocation did not involve any of the group-6 homoeologues. The translocation is considered to be a noncompensating translocation involving a whole arm of chromosome 6 of E. pontica.Key words: wheat, mite (wheat curl), translocation, Triticum.

scholarly journals Barley Stripe Mosaic Virus (BSMV) Induced MicroRNA Silencing in Common Wheat (Triticum aestivum L.)

PLoS ONE ◽  
2015 ◽  
Vol 10 (5) ◽  
pp. e0126621 ◽  
Author(s):  
Jian Jiao ◽  
Yichun Wang ◽  
Jonathan Nimal Selvaraj ◽  
Fuguo Xing ◽  
Yang Liu
Keyword(s):  
Triticum Aestivum ◽  
Mosaic Virus ◽  
Common Wheat ◽  
Triticum Aestivum L ◽  
Barley Stripe Mosaic Virus

Chilling injury and chlorotic reactions of euploids and aneuploids of the group 6 homoeologues of common wheat

Genome ◽  
1992 ◽  
Vol 35 (3) ◽  
pp. 468-473 ◽  
Author(s):  
Ernest D. P. Whelan ◽  
G. B. Schaalje
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Chinese Spring ◽  
Prolonged Exposure ◽  
Chilling Injury ◽  
Triticum Aestivum L ◽  
Recessive Trait ◽  
Cytoplasmic Effects ◽  
Group 6 ◽  
Winter Wheat Cultivars

Aneuploid seedlings of the common wheat (Triticum aestivum L.) cv. Chinese Spring (CS) that are nullisomic or telosomic for the long arm of chromosome 6D are susceptible to chilling injury under prolonged exposure to 6 °C; normal euploids or telosomics for the short arm are not. Studies of seedling grown for various durations at 20 °C prior to growth at 6 °C showed that chilling injury was a juvenile phenomenon and that the extent of injury was inversely proportional to the duration of growth at 20 °C to a maximum of about 14 days. When reciprocal crosses were made between susceptible 6D nullisomics or long-arm ditelocentrics of CS and resistant 6D nullisomics of three spring and one winter wheat cultivars, progenies from aneuploid F1 hybrids all segregated for susceptibility as a recessive trait and at a frequency approximating a dihybrid ratio; no cytoplasmic effects were detected. Aneuploids of the group 6 homoeologues of the spring wheat cvs. Cadet and Rescue were resistant, as were group 6 whole-chromosome substitutions of eight different donor wheats in the recipient parent CS and 56 other euploids tested. Genes for resistance to chilling injury appear to involve the group 6 chromosomes and the short arm of 6D in Chinese Spring. In contrast with chilling injury, all aneuploid lines with only four doses of the "corroded" loci on group 6 chromosomes exhibited chlorotic symptoms.Key words: Triticum aestivum, chilling injury.

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