Aminopeptidase B1: a centromere marker for chromosome 6B of wheat

Genome ◽  
1992 ◽  
Vol 35 (2) ◽  
pp. 261-263 ◽  
Author(s):  
Francisco Sacco ◽  
Gabriela Tranquilli ◽  
Liliana Gorgoschidse ◽  
Enrique Suarez
Keyword(s):  
Key Words ◽  
Genetic Map ◽  
Chinese Spring ◽  
Abnormal Behaviour ◽  
Key Words Wheat ◽  
Karyotypic Instability ◽  
Ditelosomic Line

Recombination values between the centromere, Amp-B1, and Lr3 were evaluated using a 'Chinese Spring' double-ditelosomic line for chromosome 6B and the euploid variety 'Sinvalocho M.A.'. Recombination was not observed between the centromere and Amp-B1, but between the centromere and Lr3 the value was 52.8 ± 3.74%. A particular progeny during two successive backcross generations showed abnormal behaviour that resulted in a reduced number of recombinants between the centromere and Lr3, probably a consequence of the karyotypic instability of 'Sinvalocho M.A.'.Key words: wheat genetic map, aminopeptidases, rust reaction, centromere marker.

Near-infrared versus visual sorting of Fusarium-damaged kernels in winter wheat

2008 ◽  
Vol 88 (6) ◽  
pp. 1087-1089 ◽  
Author(s):  
Stephen N Wegulo ◽  
Floyd E Dowell
Keyword(s):  
Quality Assurance ◽  
Winter Wheat ◽  
Fusarium Head Blight ◽  
Key Words ◽  
Fusarium Graminearum ◽  
Near Infrared ◽  
Strongly Correlated ◽  
Head Blight ◽  
Rater Reliability ◽  
Key Words Wheat

Fusarium head blight (scab) of wheat, caused by Fusarium graminearum, often results in shriveled and/or discolored kernels, which are referred to as Fusarium-damaged kernels (FDK). FDK is a major grain grading factor and therefore is routinely determined for purposes of quality assurance. Measurement of FDK is usually done visually. Visual sorting can be laborious and is subject to inconsistencies resulting from variability in intra-rater repeatability and/or inter-rater reliability. The ability of a single-kernel near-infrared (SKNIR) system to detect FDK was evaluated by comparing FDK sorted by the system to FDK sorted visually. Visual sorting was strongly correlated with sorting by the SKNIR system (0.89 ≤ r ≤ 0.91); however, the SKNIR system had a wider range of FDK detection and was more consistent. Compared with the SKNIR system, visual raters overestimated FDK in samples with a low percentage of Fusarium-damaged grain and underestimated FDK in samples with a high percentage of Fusarium-damaged grain. Key words: Wheat, Fusarium head blight, Fusarium-damaged kernels, single-kernel near-infrared

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 Spikelet sterility of wheat in farmer's field in Northwest Bangladesh

1970 ◽  
Vol 37 (2) ◽  
pp. 155-160 ◽  
Author(s):  
M Saifuzzaman ◽  
Quazi Abdul Fattah ◽  
M Shahidul Islam
Keyword(s):  
Key Words ◽  
Remarkable Difference ◽  
Direct Influence ◽  
Spikelet Sterility ◽  
Key Words Wheat ◽  
Sowing Dates ◽  
Almost All

In recent decades, sporadic and/or massive occurrence of spikelet sterility in wheat has been found in almost all the wheat growing areas of Bangladesh, especially in northwest Bangladesh where spikelet sterility causes yield reductions considerably. Investigations were carried out to understand the nature and probable cause(s) regarding the spikelet sterility problem in Bangladesh. Observations included varieties of wheat, sowing dates, prevailing weather and also soil boron (B) status in farmer's field of the sterility prone areas in northwest Bangladesh. It was found that the varieties Aghrani, Akbar and Kanchan had higher percentage of spikelet sterility than Sonalika. Seven days earlier sown wheat crops had more spikelet sterility, than seven days later sown ones, and it indicated the influence of environment and/or other cause(s) on spikelet sterility; but did not indicate the direct influence of soil boron, because, no remarkable difference of soil B status existed between the sterility affected and non-affected farmer's field in those areas. Key words: Wheat, Spikelet sterility, Grain set index, Bangladesh doi:10.3329/bjb.v37i2.1724 Bangladesh J. Bot. 37(2): 155-160, 2008 (December)

A high-density genetic map of hexaploid wheat (Triticum aestivum L.) from the cross Chinese Spring × SQ1 and its use to compare QTLs for grain yield across a range of environments

2005 ◽  
Vol 110 (5) ◽  
pp. 865-880 ◽  
Author(s):  
S. A. Quarrie ◽  
A. Steed ◽  
C. Calestani ◽  
A. Semikhodskii ◽  
C. Lebreton ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Genetic Map ◽  
Hexaploid Wheat ◽  
Chinese Spring ◽  
Triticum Aestivum L ◽  
High Density ◽  
The Cross

A ditelosomic line of ‘Chinese Spring’ wheat with augmented acquired thermotolerance

Plant Science ◽  
2000 ◽  
Vol 158 (1-2) ◽  
pp. 147-154 ◽  
Author(s):  
Patrick O'Mahony ◽  
John Burke
Keyword(s):  
Spring Wheat ◽  
Chinese Spring ◽  
Acquired Thermotolerance ◽  
Chinese Spring Wheat ◽  
Ditelosomic Line

Nutrient digestibility, performance and carcass traits of growing-finishing pigs fed diets containing dried wheat distillers grains with solubles

2006 ◽  
Vol 86 (4) ◽  
pp. 527-529 ◽  
Author(s):  
P. A. Thacker
Keyword(s):  
Key Words ◽  
Carcass Traits ◽  
Nutrient Digestibility ◽  
Distillers Grains ◽  
Finishing Pigs ◽  
Distillers Grains With Solubles ◽  
Growing Period ◽  
Key Words Wheat ◽  
Dressing Percentage ◽  
Period Performance

Seventy-two pigs were fed graded levels of wheat distillers grains with solubles (DDGS). During the growing period, gain, intake and nutrient digestibility declined (P < 0.01) as wheat DDGS increased. During the finishing period, performance was unaffected by wheat DDGS. At slaughter, dressing percentage and loin lean declined (P <0.01). Key words: Wheat distiller's dried grains with solubles, pigs, performance, digestibility, carcass traits

Companion crop, herbicide and weed effects on establishment and yields of alfalfa-bromegrass mixture

1995 ◽  
Vol 75 (1) ◽  
pp. 121-127 ◽  
Author(s):  
J. R. Moyer ◽  
D. E. Cole ◽  
D. C. Maurice ◽  
A. L. Darwent
Keyword(s):  
Medicago Sativa ◽  
Key Words ◽  
Weed Control ◽  
Detrimental Effect ◽  
Wild Oat ◽  
Combined Stress ◽  
Key Words Wheat ◽  
Medicago Sativa L ◽  
Companion Crop ◽  
Forage Yields

Alfalfa (Medicago sativa L.) and bromegrass (Bromus spp.) were seeded with and without a companion crop and with and without herbicides at Westlock and Lethbridge, Alberta, to assess the effect of weed control, companion crop and the herbicide-by-companion crop interaction on forage establishment and subsequent yields. A companion crop reduced both alfalfa and bromegrass yields for at least 2 yr after establishment on a rain fed site at Westlock and for 1 yr after establishment on an irrigated site at Lethbridge. At both sites, weed yields were higher after establishment with a companion crop than after establishment without a companion crop. Unchecked weeds in the establishment year had less effect than a companion crop on subsequent forage yields. At both locations, weed biomass in the establishment year was less than that of the companion crop. The combined stress of a companion crop and 2,4-DB application had a detrimental effect on alfalfa yield for 3 yr after establishment at Lethbridge. Key words: Wheat, barley, wild oat, redroot pigweed, dandelion

A gene involved in the resistance of wheat to wheatgrass powdery mildew fungus

Genome ◽  
1987 ◽  
Vol 29 (6) ◽  
pp. 850-852 ◽  
Author(s):  
Y. Tosa ◽  
H. Tsujimoto ◽  
H. Ogura
Keyword(s):  
Powdery Mildew ◽  
Key Words ◽  
Common Wheat ◽  
Erysiphe Graminis ◽  
Wheat Cultivars ◽  
Powdery Mildew Fungus ◽  
Key Words Wheat ◽  
Hybrid Culture ◽  
The Common

A gene for resistance to Erysiphe graminis was detected in the common wheat cultivars 'Norin 4', 'Norin 26', 'Norin 29', 'Shin-chunaga', and 'Penjamo 62', using a hybrid culture derived from E. graminis f.sp. agropyri × E. graminis f.sp. tritici. The gene was located on chromosome 1D and designated Pm10. Pm10 was considered to be involved in the resistance of wheat to the wheatgrass powdery mildew fungus. Key words: wheat, resistance, powdery mildew, Erysiphe graminis.

Seed rates for soft white winter wheat in southwestern Ontario

1993 ◽  
Vol 73 (4) ◽  
pp. 1071-1073 ◽  
Author(s):  
A. H. Teich ◽  
A. Smid
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Grain Yield ◽  
Key Words ◽  
Plant Density ◽  
Triticum Aestivum L ◽  
Seed Rate ◽  
Heat Units ◽  
Key Words Wheat ◽  
Obsolete Cultivars

This study was undertaken to determine the optimum seed rate for soft white winter wheat (Triticum aestivum L.) cultivars currently grown in southwestern Ontario (> 2900 corn heat units) where 65% of Ontario’s wheat is grown. The currently recommended density of 240–400 plants m−2 was determined using obsolete cultivars. Two popular cultivars, Harus, which tillers abundantly, and Rebecca, which tillers less, were grown from 100 to 600 seeds m−2 in increments of 100. The optimum seed rate for grain yield was 435 seeds m−2. This rate appears to be suitable for a range of genotypes adapted to southwestern Ontario. There was no interaction for yield among cultivars, years and locations. Yield was not related to tillering capacity, as the lower the plant density the more seeds there were per head. Key words: Wheat (winter), seed rate, tillering

Rotational yield and apparent N benefits of grain legumes in southern Manitoba

2004 ◽  
Vol 84 (4) ◽  
pp. 1093-1096 ◽  
Author(s):  
D. W. A. Przednowek ◽  
M. H. Entz ◽  
B. Irvine ◽  
D. N. Flaten ◽  
J. R. Thiessen Martens
Keyword(s):  
Key Words ◽  
Crop Rotation ◽  
Field Trials ◽  
Grain Legumes ◽  
Field Pea ◽  
Wheat Crop ◽  
Fertilizer Management ◽  
Dry Bean ◽  
Key Words Wheat ◽  
Dry Conditions

Knowledge of rotational N benefits of grain legumes can assist in crop rotation planning and N fertilizer management. Four annual grain legumes were tested in Manitoba field trials over 3 yr. Field pea provided the largest and most consistent apparent N benefit to a succeeding wheat crop; soybean provided relatively little N benefit. The apparent N benefits of chickpea and dry bean were inconsistent, although chickpea shows greater potential in dry conditions. Key words: Wheat rotations, N credit, crop rotation

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