SCREENING WHEAT LINES FOR RESISTANCE TO COMMON ROOT ROT

1974 ◽  
Vol 54 (4) ◽  
pp. 823-825 ◽  
Author(s):  
HOWARD HARDING
Keyword(s):  
Root Rot ◽  
Common Root ◽  
Common Root Rot ◽  
Wheat Lines

not available

CONSISTENCY OF REACTION IN WHEAT LINES TO COMMON ROOT ROT

1969 ◽  
Vol 49 (2) ◽  
pp. 197-201 ◽  
Author(s):  
B. J. Sallans ◽  
R. D. Tinline
Keyword(s):  
Root Rot ◽  
Field Tests ◽  
Field Trials ◽  
Western Canada ◽  
Common Root ◽  
Common Root Rot ◽  
Pathogenic Races ◽  
High Consistency ◽  
Wheat Lines ◽  
Selection Of

Field trials distributed throughout the Prairie Provinces in western Canada indicate that any location is suitable for the selection of wheats for resistance to common root rot caused by Cochliobolus sativus, providing the level of infection is sufficiently high. Wheat lines originally selected for resistance were consistently resistant in field tests at all locations. Three of four lines were significantly more resistant than Thatcher, one of the most resistant of the commercial varieties. A high consistency in the reaction of lines selected for susceptibility also was evident in the tests. A significant interaction in the analysis of variance found between wheat lines and locations might be interpreted as indicating the occurrence of differentially pathogenic races of the fungus. Other explanations, however, are offered for this interaction effect.

scholarly journals Lack of Relationship Between Susceptibility to Common Root Rot and Drought Tolerance Among Several Closely Related Wheat Lines

Plant Disease ◽  
2000 ◽  
Vol 84 (1) ◽  
pp. 25-28 ◽  
Author(s):  
G. Piccinni ◽  
C. M. Rush ◽  
K. M. Vaughn ◽  
M. D. Lazar
Keyword(s):  
Drought Tolerance ◽  
Root Rot ◽  
Disease Incidence ◽  
Bipolaris Sorokiniana ◽  
Disease Index ◽  
Grain Weight ◽  
Common Root ◽  
Plant Introductions ◽  
Common Root Rot ◽  
Wheat Lines

Common root rot caused by Bipolaris sorokiniana is a disease of wheat associated with plant stress. Three cultivars (Siouxland, TAM 200, and TAM 107) and several hard red winter wheat lines closely related to TAM 107, but known to differ with respect to drought tolerance, were included in a 2-year dryland field study to evaluate whether observed variation in drought tolerance was associated with susceptibility to B. sorokiniana. Untreated seed of each entry or seed treated with imazalil was planted in soil naturally infested with B. sorokiniana. Plants were evaluated at jointing and at harvest. Disease incidence and severity, number of plants, number of heads, and grain weight per meter were evaluated. Grain weight and number of heads of individual plants were recorded in order to correlate disease rating of each plant with yield components. Plot yield and test weight also were measured. There were significant entry by seed treatment interactions for number of heads per plant, grain weight per plant, and grain weight per meter. A year by treatment interaction was found for the jointing disease index, and plants grown from seed treated with imazalil had a significantly lower disease index than those grown from nontreated seed. Observed drought tolerance among the three varieties and eight closely related plant introductions was not associated with disease susceptibility to common root rot.

Resistance to common root rot (Cochliobolur sativus) in wheat in Queensland

1970 ◽  
Vol 10 (45) ◽  
pp. 497 ◽  
Author(s):  
GS Purss
Keyword(s):  
Root Rot ◽  
Field Resistance ◽  
Gibberella Zeae ◽  
Crown Rot ◽  
Cochliobolus Sativus ◽  
Individual Plant ◽  
Common Root ◽  
Plant Yield ◽  
Common Root Rot ◽  
Wheat Lines

The field resistance to common root rot (Cochliobolus sativus) of wheat lines, graded for their reaction to this disease in Canada, was determined under Queensland conditions. Several Australian varieties were also examined. Lines considered resistant and susceptible in Canada behaved in a similar fashion under Queensland conditions, while Australian varieties were generally intermediate. Discolouration of the sub-crown internode was the commonest symptom of the disease and was associated generally with a decrease in individual plant yield and in the number of heads on each plant. Discolouration of the sub-crown internode associated with Pyrenochaeta sp. in one experiment gave a varietal reaction pattern similar to that obtained with C. sativus at other sites. There appears little relationship between varietal reaction to common root rot and that previous1 reported to crown rot (Gibberella zeae).

Development and Characterization of TaMYB86-Overexpressing Transgenic Wheat Lines with Resistance to Common Root Rot

2016 ◽  
Vol 42 (10) ◽  
pp. 1429 ◽  
Author(s):  
Tian-Lei SHAN ◽  
Yan-Tao HONG ◽  
Li-Pu DU ◽  
Hui-Jun XU ◽  
Xue-Ning WEI ◽  
...  
Keyword(s):  
Root Rot ◽  
Transgenic Wheat ◽  
Common Root ◽  
Common Root Rot ◽  
Wheat Lines

scholarly journals Ecotopic Expression of the Antimicrobial Peptide DmAMP1W Improves Resistance of Transgenic Wheat to Two Diseases: Sharp Eyespot and Common Root Rot

2020 ◽  
Vol 21 (2) ◽  
pp. 647
Author(s):  
Qiang Su ◽  
Ke Wang ◽  
Zengyan Zhang
Keyword(s):  
Broad Spectrum ◽  
Root Rot ◽  
Transgenic Wheat ◽  
Molecular Characteristics ◽  
Common Root ◽  
Common Root Rot ◽  
Sharp Eyespot ◽  
Infection Types ◽  
Wheat Lines

Wheat (Triticum aestivum L.) is an important staple crop. Sharp eyespot and common root rot are destructive diseases of wheat. Antimicrobial peptides (AMPs) are small peptides with broad-spectrum antimicrobial activity. In this study, we synthesized the DmAMP1W gene, encoding Dahlia merckii DmAMP1, and investigated the antifungal role of DmAMP1W in vitro and in transgenic wheat. Protein electrophoresis analysis and in vitro inhibition results demonstrated that the synthesized DmAMP1W correctly translated to the expected peptide DmAMP1W, and the purified peptide inhibited growths of the fungi Rhizoctonia cerealis and Bipolaris sorokiniana, the pathogenic causes of wheat sharp eyespot and common root rot. DmAMP1W was introduced into a wheat variety Zhoumai18 via Agrobacterium-mediated transformation. The molecular characteristics indicated that DmAMP1W could be heritable and expressed in five transgenic wheat lines in T1–T2 generations. Average sharp eyespot infection types of these five DmAMP1W transgenic wheat lines in T1–T2 generations decreased 0.69–1.54 and 0.40–0.82 compared with non-transformed Zhoumai18, respectively. Average common root rot infection types of these transgenic lines and non-transformed Zhoumai18 were 1.23–1.48 and 2.27, respectively. These results indicated that DmAMP1W-expressing transgenic wheat lines displayed enhanced-resistance to both sharp eyespot and common root rot. This study provides new broad-spectrum antifungal resources for wheat breeding.

Generation and Characterization ofPgPGIP1Transgenic Wheat Plants with Enhanced Resistance to Take-all and Common Root Rot

2013 ◽  
Vol 39 (9) ◽  
pp. 1576 ◽  
Author(s):  
Li-Hua YANG ◽  
Jin-Feng WANG ◽  
Li-Pu DU ◽  
Hui-Jun XU ◽  
Xue-Ning WEI ◽  
...  
Keyword(s):  
Root Rot ◽  
Common Root ◽  
Common Root Rot ◽  
Enhanced Resistance ◽  
Take All

Expression ofBvGLP1in Transgenic Wheat Enhances Resistance to Common Root Rot

2013 ◽  
Vol 39 (2) ◽  
pp. 368
Author(s):  
Liang DANG ◽  
Zhen-Qi SU ◽  
Xing-Guo YE ◽  
Hui-Jun XU ◽  
Zhao LI ◽  
...  
Keyword(s):  
Root Rot ◽  
Transgenic Wheat ◽  
Common Root ◽  
Common Root Rot

The epidemiology of common root rot in Manitou wheat: disease progression during the growing season

1974 ◽  
Vol 52 (7) ◽  
pp. 1757-1764 ◽  
Author(s):  
P. R. Verma ◽  
R. A. A. Morrall ◽  
R. D. Tinline
Keyword(s):  
Triticum Aestivum ◽  
Disease Severity ◽  
Plant Development ◽  
Root Rot ◽  
Growing Season ◽  
Cochliobolus Sativus ◽  
Infection Rates ◽  
Common Root ◽  
Common Root Rot ◽  
Disease Rating

Common root rot in Triticum aestivum cultivar Manitou caused primarily by Cochliobolus sativus was followed during plant development in 1969, 1970, and 1971 at Matador, Saskatchewan. Plants were sampled at intervals, and three variables based mainly on the occurrence of lesions on subcrown internodes were studied: number of diseased plants per square meter; percentage of diseased plants; and disease rating which integrated percentage of diseased plants and disease severity on each plant. All variables increased with time, and the progression curves in all 3 years were hyperbolic, indicating that the increases were like those of a simple interest disease as described by Van der Plank. In two of the years, almost 100% of the plants were diseased considerably before the end of the season. The transformation proposed by Van der Plank for simple interest diseases, log10[1/(1 − x)], was applied to the percentages of diseased plants, and regressions were calculated. The slopes of these lines (infection rates) were as follows: 1969, 0.99% plants per day; 1970, 1.32%; and 1971, 1.96%. In 1969 the onset of disease was later than in 1970 and 1971, and there was correspondingly less disease at the end of the growing season.

Effect of imazalil seed treatment on common root rot and grain yields of cereal cultivars

1981 ◽  
Vol 3 (4) ◽  
pp. 239-243 ◽  
Author(s):  
P.R. Verma ◽  
S.H.F. Chinn ◽  
W.L. Crowle ◽  
D.T. Spurr ◽  
R.D. Tinline
Keyword(s):  
Root Rot ◽  
Seed Treatment ◽  
Common Root ◽  
Grain Yields ◽  
Common Root Rot ◽  
Cereal Cultivars
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