Effects of fusarium head blight and seed treatment on germination, emergence, and seedling vigour of spring wheat

The effects of storage temperature and duration on germination, emergence, and vigor of Fusarium head blight-affected seed were studied in the spring wheat cvs. Glenlea and Roblin. Seed was stored at -10, 2.5, 10, or 20°C. Germination was assessed at cold (5°C) and moderate 20/15°C for 16/8 h daily) temperatures following 0, 8, 16, and 24 weeks of storage. Emergence from a soilless mix was counted 10 days after planting. Vigor was assessed following germination by measuring root and shoot lengths and in emerged plants by determining dry shoot weights. Germination after storage at the three colder temperatures decreased with length of storage, but storage at 20°C did not affect germination. Overall, germination of Fusarium-affected seed at moderate temperatures was significantly lower than for healthy seed. Germination of infected seed at 5°C was better than at moderate temperatures, probably due to lack of fungal activity at low temperatures. Seed treatment with Vitaflo 280 improved germination, but not emergence, of infected seed. However, roots from treated infected seed were shorter than from untreated seed. Emergence of infected seeds was better after storage at 10 and 20°C than at -10 and 2.5°C. Storage temperature did not significantly affect vigor. Dry shoot weight at 14 days was lower after storage at -10 than at 20°C.

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Evaluating milling and baking quality associated with a Fusarium head blight resistance-enhancing genome deletion in wheat

Cereal Research Communications ◽

10.1007/s42976-020-00122-0 ◽

2021 ◽

Author(s):

David F. Garvin ◽

Linda Dykes

Keyword(s):

Fusarium Head Blight ◽

Spring Wheat ◽

Fusarium Head Blight Resistance ◽

Seed Storage ◽

Isogenic Line ◽

Head Blight ◽

Hard Red Spring Wheat ◽

Baking Quality ◽

Wide Range ◽

End Use

AbstractWheat (Triticum aestivum L.) breeding involves improvement of a wide range of traits. However, selection for these traits is only acceptable if the end use quality of the wheat is not compromised. In hard red spring wheat, the predominant end use of flour is bread. In this study, milling and baking quality characteristics were compared in the hard red spring wheat ‘Apogee’ and a near-isogenic line of Apogee (‘A30’) that contains a spontaneous segmental deletion of the long arm of chromosome arm 3DL that is associated with enhanced resistance to Fusarium head blight caused by the fungal pathogen Fusarium graminearum (Schwabe). Apogee and A30 were grown together in replicated greenhouse experiments, and the resultant grain was used to compare a diverse spectrum of grain characteristics and milling and baking properties of the grain in the two wheat genotypes. The major difference detected was a significant increase in protein content in A30, which had nearly 21% more flour protein than Apogee. This difference did not affect any of the flour properties or baking characteristics evaluated, suggesting that the increased protein concentrations in A30 are not associated with the principal seed storage properties associated with baking quality. These results indicate that despite the size of the deletion in A30, no key genes associated with end use quality are located on that chromosome segment. The deletion may therefore find use in efforts to enhance Fusarium head blight in hard red spring wheat.

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Agronomic and Economic Responses of Spring Wheat to Management of Fusarium Head Blight

Plant Disease ◽

10.1094/pdis-92-9-1339 ◽

2008 ◽

Vol 92 (9) ◽

pp. 1339-1348 ◽

Cited By ~ 26

Author(s):

C. R. Hollingsworth ◽

C. D. Motteberg ◽

J. V. Wiersma ◽

L. M. Atkinson

Keyword(s):

Fusarium Head Blight ◽

Spring Wheat ◽

Growth Stage ◽

Red River ◽

Disease Development ◽

Cultivar Resistance ◽

Head Blight ◽

Fungicide Treatment ◽

Red River Valley ◽

Moderately Resistant

Spring wheat (Triticum aestivum) crop losses in the Red River Valley of Minnesota and North Dakota caused by Fusarium head blight (FHB) epidemics incited by Fusarium graminearum are common. Fungicide application is often recommended when environments promote disease development but benefits have not been fully evaluated when environment, cultivar resistance, and economic outcome are considered. Agronomic and economic characters were determined for cultivars with various resistance levels when treated with no fungicide; propiconazole at 63 g active ingredient (a.i.)/ha applied at Feekes growth stage (FGS) 2, tebuconazole at 126 g a.i./ha applied at FGS 10.51, or propiconazole at 63 g a.i./ha applied at FGS 2 followed by tebuconazole at 126 g a.i./ha applied at FGS 10.51. Revenue returned from FHB moderately susceptible (MS) cultivars was 8% greater than moderately resistant (MR) cultivars in low-disease environs but differences were not significant when disease was moderate. Deoxynivalenol accumulation in grain of MS and MR cultivars was unchanged by fungicide treatment. MS cultivars were economically more adventitious to grow than MR cultivars in both disease environments.

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Impact of moisture, host genetics and Fusarium graminearum isolates on Fusarium head blight development and trichothecene accumulation in spring wheat

Mycotoxin Research ◽

10.1007/s12550-011-0115-6 ◽

2011 ◽

Vol 28 (1) ◽

pp. 45-58 ◽

Cited By ~ 14

Author(s):

Pravin Gautam ◽

Ruth Dill-Macky

Keyword(s):

Fusarium Head Blight ◽

Fusarium Graminearum ◽

Spring Wheat ◽

Head Blight ◽

Host Genetics

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Registration of Spring Wheat Germplasm ND 744 Resistant to Fusarium Head Blight, Leaf, and Stem Rusts

Crop Science ◽

10.2135/cropsci2005.0430 ◽

2005 ◽

Vol 45 (1) ◽

pp. cropsci2005.0430 ◽

Cited By ~ 11

Author(s):

M. Mergoum ◽

R.C. Frohberg ◽

J.D. Miller ◽

J.B. Rasmussen ◽

R.W. Stack

Keyword(s):

Fusarium Head Blight ◽

Spring Wheat ◽

Head Blight ◽

Wheat Germplasm

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Effectiveness of marker-based selection for Fusarium head blight resistance in spring wheat

Czech Journal of Genetics and Plant Breeding ◽

10.17221/3266-cjgpb ◽

2011 ◽

Vol 47 (Special Issue) ◽

pp. S123-S129 ◽

Cited By ~ 6

Author(s):

J. Chrpová ◽

V. Šíp ◽

T. Sedláček ◽

L. Štočková ◽

O. Veškrna ◽

...

Keyword(s):

Fusarium Head Blight ◽

Spring Wheat ◽

Recombinant Inbred Lines ◽

Wheat Variety ◽

Fusarium Head Blight Resistance ◽

Head Blight ◽

No Donor ◽

Selection For ◽

The Cross ◽

Sumai 3

The effect of selection for two donor-QTL from Fusarium head blight (FHB) resistant spring wheat variety Sumai 3 on the reduction of deoxynivalenol (DON) content and FHB index was evaluated in field trials over two years (2008, 2009) following artificial inoculation with Fusarium culmorum. This study was conducted on populations of recombinant inbred lines derived from two crosses, Sumai 3/Swedget and Sumai 3/SG-S 191-01. DON content and FHB index were significantly reduced in both crosses in the genotype classes with two stacked donor QTL on chromosomes 3B and 5A in comparison to genotype classes with no donor QTL. In the cross Sumai 3/Swedget the selection for QTL alleles from 3B and 5A resulted in a 63.4% reduction in DON content, and a 51.8% reduction in the FHB index. Similarly, there was a 35.9% and 31.9% reduction, respectively, in the cross Sumai 3/SG-S 191-01. The single effect of the donor-QTL allele from 3B was significant only in the cross Sumai 3/Swedjet. The presence or absence of awns affected both DON content and FHB index in both populations, but was only significantly in the cross Sumai 3/SG-S 191-01. In this cross the effect of selection for fully awned genotypes was particularly evident on a reduction of both DON and FHB index in classes with neither donor QTL, or the 3B QTL. However, the data indicate that the “awnedness” effect on FHB resistance may be highly variable and is probably greater on reducing FHB symptoms than on DON content. The results confirmed that marker-based introgression of resistance QTLs on chromosomes 3B and 5A in traditional breeding materials can enrich populations for resistance types, but it was also shown that the effect of marker-based selection need not be large in all crosses and a similar effect can probably be reached by indirect selection for some FHB-related traits.

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