Sanitary security of foodstuffs
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Sanitary quality of maize (corn) & Mycotoxins

Results of 5 years of studies

Assessing the tolerance of maize (corn) HYBRIDS to fusariosis

These studies were carried out simultaneously with the study carried out on lines begun in 2001. The maize (corn) hybrids being developed and varieties marketed by Maïsadour Semences were analysed in each test series in order to determine whether or not tolerance to Fusarium is hereditary, and to determine the characteristics of the different varieties.

A network of experiments throughout Europe

The study concerned 96 hybrids, both early and late varieties tested in the extensive experiment network (comprising over 60 locations) in a wide variety of situations.

  

The effects of fusariosis depend largely on the climate. The occurrence of F. graminearum is therefore observed mostly on early hybrids and F. Liseola mostly on late hybrids.

To characterise the tolerance of the different varieties, three types of analysis were routinely carried out each year on several hundred samples from the network (1205 analyses carried out over four series of studies): results for attacks on ears (Ear Visual), sanitary analyses of grains and dosages of toxins produced by Fusaria

 

 

Results

 

Ear Visual?

 

Select the results to be shown:

Very early&
Early
F. Graminearum

Semi-early
F. Liseola

Semi-Late, Late
very Late
F. Liseola

Show all

Earliness: Very-early Maize (corn)
Tolerance of maize (corn) hybrids to F. Graminearum

Group A

 

 

Earliness: Early Maize (corn)
Tolerance of maize (corn) hybrids to F. Graminearum

Group B

 

 

NB: the occurrence of F. graminearum in the tests does not necessarily imply that mycotoxins were produced. The result for the intensity of attack on the ears at the time of harvesting (Ear Visual) is not sufficient evidence to draw conclusions on the sensitivity of a maize (corn) variety to the development of mycotoxins.

Few tests from the entire Northern European network show the development of F. graminearum. The fusariosis due to contamination by this parasite is therefore not very common. Amongst the test plots affected by disease, discrimination was used to show that Maïsadour Semences' varieties are very tolerant to Fusarium graminearum.

 

Earliness: Semi-early Maize (corn)
Tolerance of maize (corn) hybrids to F. Liseola

Group C

 

 

NB: the occurrence of F. Liseola in the tests does not necessarily imply that mycotoxins were produced. The result for the intensity of attack on the ears at the time of harvesting (Ear Visual) is not sufficient evidence to draw conclusions on the sensitivity of a maize (corn) variety to the development of mycotoxins.

In earliness group C, the effects of parasites due to F. Liseola remained low for all four years of the tests. Overall an excellent tolerance is observed for Maïsadour Semences' varieties. These results have not yet been confirmed in situations where the effects of F. Liseola are greater.

 

Earliness: Semi-Late Maize (corn)
Tolerance of maize (corn) hybrids to F. Liseola

Group D

 

 

Earliness: Late Maize (corn)
Tolerance of maize (corn) hybrids to F. Liseola

Group E

 

 

Earliness: Very Late Maize (corn)
Tolerance of maize (corn) hybrids to F. Liseola

Group G

 

 

NB: the occurrence of F. Liseola in the tests does not necessarily imply that mycotoxins were produced. The result for the intensity of attack on the ears at the time of harvesting (Ear Visual) is not sufficient evidence to draw conclusions on the sensitivity of a maize (corn) variety to the development of mycotoxins.

The later the varieties, the more the growing areas correspond to situations where the effects of European corn borer (pyrale) are high. A correlation is observed with the sensitivity of the genetic material to F. Liseola.

 

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