Resistance and tolerance reactions of winter wheat lines to Heterodera filipjevi in Turkey

Several experiments were conducted to evaluate the utility of an in vivo acetolactate synthase (ALS) assay for comparing sensitivity to imazamox among imidazolinone-resistant wheat cultivars/lines. Ten single-gene imidazolinone-resistant winter wheat cultivars/lines, one two-gene and four single-gene imidazolinone-resistant spring wheat cultivars/lines, and three pairs of heterozygous and homozygous imidazolinone-resistant winter wheat lines were evaluated in the assay experiments. Additionally, a dose-response assay was conducted to evaluate the tolerance of several imidazolinone-resistant wheat cultivars to imazamox on a whole plant level. The I50value (i.e., the imazamox dose that inhibited ALS activity by 50%) of the winter wheat cultivar ‘Above’ was 54 to 84% higher than the I50values of 99-420, 99-433, and CV-9804. However, based on the results of this study, it is unclear whether genetic background or market class (hard red winter vs. soft white winter) influences the level of ALS inhibition by imazamox. Teal 15A, the two-gene imidazolinone-resistant spring wheat cultivar, had an I50value that was two to three times greater than the I50value of the single-gene imidazolinone-resistant spring wheat cultivars/lines. The heterozygous imidazolinone-resistant wheat lines had I50values that were 69 to 81% less than the I50values of the homozygous lines. In the whole plant dose response, theR50values (i.e., the imazamox dose that reduced biomass by 50%) of the susceptible cultivars Brundage 96 and Conan were 15 to 17 times less than the homozygous single-gene imidazolinone-resistant winter and spring cultivars/lines, whoseR50values were about 1.7 times less than theR50value of the two-gene imidazolinone-resistant spring wheat line, Teal 15A. The results of the in vivo ALS imazamox assays and the whole plant imazamox dose-response assay were similar, indicating that the in vivo assay can be used to accurately and quickly compare resistance between imidazolinone-resistant wheat cultivars/lines.

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Resistance in Winter Wheat Lines to Initial Infection and Spread Within Spikes by Deoxynivalenol and Nivalenol Chemotypes of Fusarium graminearum

Plant Disease ◽

10.1094/pdis-03-10-0167 ◽

2011 ◽

Vol 95 (1) ◽

pp. 31-37 ◽

Cited By ~ 13

Author(s):

Peter Horevaj ◽

Liane R. Gale ◽

Eugene A. Milus

Keyword(s):

United States ◽

Winter Wheat ◽

Fusarium Graminearum ◽

The United States ◽

Blight Resistance ◽

Head Blight ◽

Initial Infection ◽

Additional Information ◽

Progress Curve ◽

Wheat Lines

Head blight of wheat in the United States is caused primarily by the deoxynivalenol (DON)-producing chemotype of Fusarium graminearum. However, the discovery of the nivalenol (NIV) chemotype of F. graminearum in Louisiana and Arkansas necessitates having resistance in wheat to both chemotypes. The objectives of this research were to quantify resistance of selected winter wheat lines to initial infection and pathogen spread within spikes, to determine whether wheat lines selected for resistance to the DON chemotype also have resistance to the NIV chemotype, and to improve the methods for quantifying resistance to initial infection. A susceptible check (Coker 9835) and 15 winter wheat lines, which are adapted to the southeastern United States and possess diverse sources of head blight resistance, were evaluated for head blight resistance in a series of greenhouse and growth-chamber experiments. Significant levels of resistance to both initial infection and spread within a spike were found among the lines, and lines with resistance to isolates of the DON chemotype had even higher levels of resistance to isolates of the NIV chemotype. Quantifying resistance to initial infection was improved by standardizing the inoculum and environmental conditions. Additional information related to resistance to spread within a spike was obtained by calculating the area under the disease progress curve from 7 to 21 days after inoculation.

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Selection of frost resistant bread winter wheat lines

Myronivka Bulletin ◽

10.31073/mvis201704-01 ◽

2017 ◽

Vol 4 (0) ◽

pp. 6-14

Author(s):

N. V. Bulavka ◽

T. V. Yurchenko ◽

O. M. Kucherenko

Keyword(s):

Winter Wheat ◽

Wheat Lines ◽

Selection Of

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Study of Resistance of Common Winter Wheat Lines to the Fusarium Head Blight (Fusarium Culmorum)

International Journal of Innovative Approaches in Agricultural Research ◽

10.29329/ijiaar.2018.151.3 ◽

2018 ◽

Vol 2 (3) ◽

pp. 167-176

Author(s):

Evgeniy Dimitrov ◽

◽

Zlatina Peycheva Uhr ◽

Blagoy Andonov ◽

Nikolaya Velcheva ◽

...

Keyword(s):

Winter Wheat ◽

Fusarium Head Blight ◽

Fusarium Culmorum ◽

Head Blight ◽

Wheat Lines

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Indirect selection of Cre1 gene in winter wheat populations

Archives of Biological Sciences ◽

10.2298/abs1101049c ◽

2011 ◽

Vol 63 (1) ◽

pp. 49-53 ◽

Cited By ~ 2

Author(s):

M. Çalişkan ◽

S. Uranbey ◽

J. Nicol ◽

T. Akar ◽

H. Elekçioğlu ◽

...

Keyword(s):

Winter Wheat ◽

Production Systems ◽

Early Stage ◽

Dominant Gene ◽

Indirect Selection ◽

Central Anatolia ◽

Yield Losses ◽

Heterodera Filipjevi ◽

Species Being ◽

Selection Of

The nematodes are important biotic constraint in rain-fed wheat production systems. In Turkey, they is found in 75.0% of soil samples in Central Anatolia with the dominant species being Heterodera filipjevi. Yield losses for winter wheat in rain-fed environments are documented between 27.0-46.0%. A single dominant gene for resistance to H. avenae, designated as Cre1, was assessed in Turkey. It was also found to be effective to Heterodera filipjevi. In this research, a STS based Cre1 marker was applied in a number of segregating wheat populations from F1 to F4 to discriminate Cre1-positive lines among the wheat populations. Results clearly indicated that Marker Assisted Selection (MAS) is functioning effectively, with recovery of Cre1 positive lines up to 88.0 % depending on the cross in early stage of breeding.

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Technological quality and yield’s components of winter wheat lines under Polish climatic conditions

Cereal Research Communications ◽

10.1556/crc.35.2007.1.17 ◽

2007 ◽

Vol 35 (1) ◽

pp. 151-161 ◽

Cited By ~ 4

Author(s):

M. Gut ◽

A. Bichoński

Keyword(s):

Winter Wheat ◽

Climatic Conditions ◽

Technological Quality ◽

Wheat Lines

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Technological characteristics of newly developed mutant common winter wheat lines

Plant Soil and Environment ◽

10.17221/3686-pse ◽

2011 ◽

Vol 50 (No. 2) ◽

pp. 84-87 ◽

Cited By ~ 1

Author(s):

M. Mangova ◽

G. Rachovska

Keyword(s):

Winter Wheat ◽

Sodium Azide ◽

Crude Protein ◽

Wheat Cultivar ◽

Mean Value ◽

Technological Characteristics ◽

Winter Wheat Cultivars ◽

Technological Quality ◽

Mutant Lines ◽

Wheat Lines

Fifteen hybrid-mutant lines and two direct mutant lines were studied in terms to their technological quality in 2000 and 2001 vegetation years. The hybrid-mutant lines were produced using chemical mutagen sodium azide at a concentration of 1mM on F<sub>2</sub> seeds. For parent cultivars, promising and well adapted Bulgarian and foreign common winter wheat cultivars were used. The direct mutant lines were obtained by gamma-irradiation and sodium azide treatment of dry seed from cultivars. The differences of the following three characteristics: quality index, softening of dough and energy for dough deformation (W) of MX 77/14 compared to the total mean value are positive and statistically significant. Crude protein, softening of dough, and energy for dough deformation (W) of MX 84/37 are also significantly different in relation to the total mean value. Both wheat lines refer to the group of common winter wheat with very good technological quality. This fact was confirmed of higher values of energy for dough deformation (W), than strong wheat cultivar Pobeda.

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Hybrid necrosis as a barrier to gene transfer in hexaploid winter wheat × triticale crosses

Canadian Journal of Plant Science ◽

10.4141/p96-185 ◽

1998 ◽

Vol 78 (2) ◽

pp. 239-244 ◽

Cited By ~ 8

Author(s):

B. Bizimungu ◽

J. Collin ◽

A. Comeau ◽

C.-A. St-Pierre

Keyword(s):

Gene Transfer ◽

Winter Wheat ◽

Wheat Cultivars ◽

Hybrid Necrosis ◽

Cross Direction ◽

Wheat Gene ◽

Special Value ◽

Winter Wheat Cultivars ◽

Main Barrier ◽

Wheat Lines

An interspecific wheat × triticale hybridization program was initiated with the scope of widening and improving the winter wheat gene pool. However, progress was hampered by severe necrosis that caused the death of F1 hybrids from crosses between the most winterhardy wheat and triticale cultivars. This paper describes hybrid necrosis as the main barrier to gene transfer between winter wheat cultivars Borden, Augusta and Ruby, and hexaploid winter triticales OAC Wintri and K9-6. Crosses with tester lines revealed that the three winter wheats were carriers of the necrotic Ne2 allele. High temperature (30 °C) treatment until heading stage permitted to only partially circumvent the problem. A study of cross direction effects at the backcross level showed that the conventional method (F1 × wheat) was more efficient for plant recovery, but plants produced by the alternative backcross system (wheat × F1) were more self-fertile. Within the most winterhardy germplasm, hybrid necrosis is a major problem for transferring genes between winter wheat and triticale. The use of non-necrotic winter wheat lines such as MC11N, a local winter wheat selection, may have a special value as a bridge to circumvent the necrosis problem. Key words: Hybrid necrosis, Ne genes, wheat × triticale hybrids, cross direction

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