scholarly journals Diversidade genética de populações de Mycosphaerella musicola e caracterização de efetores LysM em Mycosphaerella graminicola

2015 ◽  
Author(s):  
Fabiane Silva Darosci Brito
Keyword(s):  
Mycosphaerella Graminicola ◽  
Mycosphaerella Musicola

Microsatellite markers provide evidence for sexual reproduction of Mycosphaerella graminicola in Saskatchewan

Genome ◽  
2004 ◽  
Vol 47 (5) ◽  
pp. 789-794 ◽  
Author(s):  
M Razavi ◽  
G R Hughes
Keyword(s):  
Genetic Diversity ◽  
Genetic Variability ◽  
Sexual Reproduction ◽  
Primary Source ◽  
Mycosphaerella Graminicola ◽  
Septoria Tritici Blotch ◽  
Septoria Tritici ◽  
Allelic Series ◽  
Evolutionary Potential ◽  
Wheat Field

This study examined the genetic structure of a Saskatchewan population of Mycosphaerella graminicola, cause of the foliar disease Septoria tritici blotch of wheat. Such knowledge is valuable for understanding the evolutionary potential of this pathogen and for developing control strategies based on host resistance. Nine pairs of single-locus microsatellite primers were used to analyze the genomic DNA of 90 isolates of M. graminicola that were collected using a hierarchical sampling procedure from different locations, leaves, and lesions within a wheat field near Saskatoon. Allelic series at eight different loci were detected. The number of alleles per locus ranged from one to five with an average of three alleles per locus. Genetic diversity values ranged from 0.04 to 0.67. Partitioning the total genetic variability into within- and among-location components revealed that 88% of the genetic variability occurred within locations, i.e., within areas of 1 m2, but relatively little variability occurred among locations. Low variability among locations and a high degree of variability within locations would result if the primary source of inoculum was airborne ascospores, which would be dispersed uniformly within the field. This finding was confirmed by gametic disequilibrium analysis and suggests that the sexual reproduction of M. graminicola occurs in Saskatchewan.Key words: Mycosphaerella graminicola, SSR markers, sexual reproduction, genetic diversity.

scholarly journals Reaction of winter wheat genotypes to infection by Mycosphaerella graminicola(Fuckel) Schroeter

2013 ◽  
Vol 55 (1) ◽  
pp. 233-246
Author(s):  
Ewa Mirzwa-Mróz ◽  
Czesław Zamorski
Keyword(s):  
Winter Wheat ◽  
Broad Spectrum ◽  
Mycosphaerella Graminicola ◽  
Wheat Breeding ◽  
Septoria Tritici ◽  
Wheat Cultivars ◽  
Breeding Lines ◽  
Wheat Genotypes ◽  
Winter Wheat Cultivars

The response of Polish winter wheat genotypes to <i>M.graminicola</i> (preliminary experiments and cultivar collections) was observed in different regions of Poland. Observations were carried out in 1995-1999. The winter wheat genotypes showed a broad spectrum of reaction to this pathogen. Between 1997 and 1999 the highest degree of infection on winter wheat breeding lines was noted in Kończewice. During this time no genotypes free from infection were observed (preliminary breeding experiments). Cultivars with no symptoms of <i>Septoria tritici</i> blotch (Leszczyńska Wczesna and Żelazna) were found among old genotypes in Słupia Wielka only in earlier experiments (1995-1996). In the years 1997-1999 the winter wheat cultivars were classified into groups on the basis of their response to the pathogen. The degree of infection for the majority cultivars was quite high.

scholarly journals Manejo Fitosanitario de las Principales plagas del Plátano del clon Dominico – Hartón

2020 ◽  
Vol 5 (9) ◽  
pp. 204
Author(s):  
Amanda Elizabeth Bonilla-Bonilla ◽  
Juan Gabriel Chipantiza-Masabanda ◽  
Mario Francisco Játiva-Reyes
Keyword(s):  
Mycosphaerella Fijiensis ◽  
El Sistema ◽  
Mycosphaerella Musicola

El estudio se realizó en la Finca Integral Jatum Paccha, ubicada a 2 Km de la Parroquia 10 de Agosto vía a la Parroquia El Triunfo y, en la Finca Integral Unión Base, localizada a 3 Km de la cuidad de Puyo, durante  el  2017. Constituyendo el objeto de la investigación las principales plagas de Plátano, para dar respuesta al problema se propuso los siguientes objetivos: determinar las principales plagas del cultivo de Plátano, su importancia y la estrategia de Manejo fitosanitario del cultivo óptimo para resolver el problema de los daños de las plagas, utilizando la metodología del Dr. Iparraguirre et al. (1998), CIBA - GEIGI (2000) y León et al (2007). Se determinó que las Plagas más importantes fueron Mycosphaerella musicola (Leach ex Mulder.), Mycosphaerella fijiensis (Morelet),y el Mosaico del pepino (CMV); como Sistemas de Control Fertilización + Deshoje y Fertilización + Deshoje + Fungicida orgánico Timorex Gold, los más efectivos respectivamente al bajar por debajo del Umbral Económico (grado 2) el desarrollo de la enfermedad, grado medio de afectación y disminuir su distribución en el área de estudio; así como, obtener los mejores índices cualitativos de cosecha del cultivo del plátano, destacándose con respecto a la floración el Sistema Fertilización + Deshoje.

Sign in / Sign up

Export Citation Format

Share Document