Search results

Sort By:

Limit search:

Yield reduction and mycotoxin accumulation in barley doubled haploids inoculated with Fusarium culmorum (W.G.Sm.) Sacc.

100%

Adamski T., Chelkowski J., Golinski P., Kaczmarek Z., Perkowski J., Surma M., Wisniewska H.

Journal of Applied Genetics

1999

vol. 40

issue 2

73-84

Barley doubled haploids (DH) were examined for their susceptibility to Fusarium head blight caused by Fusarium culmorum. DH lines were derived from F1 Maresi (two-rowed) ? Pomo (six-rowed) hybrids by the 'H. bulbosum' method. Doubled haploids, parental cultivars and F1 and F2 hybrids were inoculated with Fusarium culmorum (W.G.Sm.) Sacc., isolate KF350 under field conditions. The kernel infection score, number of kernels per ear, kernel weight per ear, 1000-kernel weight, and kernel fractions were recorded in inoculated and control plants. Samples of kernels were analysed for presence of nivalenol and deoxynivalenol. In the inoculated plants a reduction of kernel number, kernel weight per ear, 1000-kernel weight and percentage of plump kernels was observed. Generally, inoculation caused a significant decrease in the kernel fraction > 2.5 mm, and increase in the fractions 2.5-2.2 and < 2.2 mm. This tendency was more visible in 2-rowed than in 6-rowed lines. The nivalenol content of inoculated doubled haploids ranged from 0.16 to 7.61 mg/kg, whereas their deoxynivalenol content ranged from 0.000 to 0.253 mg/kg. Significant relationships between the kernel infection score and nivalenol content, kernel yield per ear, 1000-kernel weight and kernel fraction > 2.5 mm were observed. Transgression effects were noted in some DH lines, in which the reduction of kernel characters was lower than in parental cultivars. Doubled haploids with a positive and negative transgression for nivalenol and deoxynivalenol content were also recorded.

Genetic determination of variability of barley doubled haploids inoculated with Fusarium culmorum (W.G.Sm.) Sacc. with regard to mycotoxin accumulation and reduction in yield traits

68%

Surma M., Adamski A. T., Adamski T., Chelkowski C. J., Chelkowski J., Golinski G. P., Golinski P., Kaczmarek K. Z., Kaczmarek Z., Kostecki K. M., Kostecki M., Perkowski P. J., Perkowski J., Wisniewska W. H., Wisniewska H.

Journal of Applied Genetics

2000

vol. 41

issue 4

237-246

The genetic determination of variability of barley doubled haploid (DH) lines in regard of their susceptibility to Fusarium head blight caused by Fusarium culmorum was studied. The susceptibility was evaluated in a 3-year field experiment on the basis of reduction in yield traits and mycotoxin accumulation in infected kernels. The following traits were analysed in inoculated and control plants: kernel number and weight per ear, 1000-kernel weight, percentage of plump kernels (>2.5 mm), deoxynivalenol (DON) content and nivalenol (NIV) content of kernels. On the basis of the obtained data, heritability coefficient (ratio of genotypic to phenotypic variance) was assesed, and genetic parameters as well as the number of effective factors were estimated. Heritability coefficients calculated from two-way analysis of variance, i.e. regarding the influence of years and year ? genotype interaction, appeared to be exceptionally low and ranged from 5.2% for the reduction in plump kernels to 38.2% for the reduction in 1000-kernel weight. In the case of mycotoxin accumulation about 60% of the observed variability in NIV concentration and 30% in DON concentration resulted from genetic differences among lines. Additive effects of genes were important for all the analysed traits. Significant effects of dominance and dominance ? dominance were observed for 1000-kernel weight and percentage of plump kernels. Moreover, it was found that the observed variability in yield trait reduction resulted from the segregation of 5-6 effective factors, DON content from 4 factors, while NIV content from 5 factors.

Refine search results

2 Journal of Applied Genetics

1 2000

1 1999

2 Adamski T.

2 Chelkowski J.

2 Golinski P.

2 Kaczmarek Z.

2 Perkowski J.

2 Surma M.

2 Wisniewska H.

1 Adamski A. T.

1 Chelkowski C. J.

1 Golinski G. P.

1 Kaczmarek K. Z.

1 Kostecki K. M.

1 Kostecki M.

1 Perkowski P. J.

1 Wisniewska W. H.

Search results

Yield reduction and mycotoxin accumulation in barley doubled haploids inoculated with Fusarium culmorum (W.G.Sm.) Sacc.

Genetic determination of variability of barley doubled haploids inoculated with Fusarium culmorum (W.G.Sm.) Sacc. with regard to mycotoxin accumulation and reduction in yield traits