scholarly journals Enfermedades fungosas asociadas al cultivo de avena (Avena sativa L.) en el Estado de México

2018 ◽  
Vol 4 (7) ◽  
pp. 1103-1107
Author(s):  
Santos Gerardo Leyva-Mir ◽  
Refugio Sillas-Covarrubias ◽  
Héctor Eduardo Villaseñor-Mir ◽  
Luis Antonio Mariscal-Amaro ◽  
María Florencia Rodríguez García
Keyword(s):  
Avena Sativa ◽  
Puccinia Coronata ◽  
Puccinia Graminis ◽  
Helminthosporium Sativum ◽  
Alternaria Sp

En México la avena es uno de los cereales que en los últimos años ha acrecentado su superficie de siembra de manera importante, sustituyendo a cultivos tradicionales como maíz, frijol, trigo y cebada, alcanzando las 942 mil hectáreas en 2010(SIAP,2010).Sinembargo,suproducciónseveafectada por enfermedades fungosas mismas que en algunos casos no han sido identificadas y que son un peligro potencial para la producción de este cereal en siembras de temporal. Este estudio tuvo como objetivo identificar los agentes causales de enfermedades fungosas en el cultivo de avena sembrada bajo temporal durante el ciclo primavera-verano 2009, en tres regiones productoras del Estado de México. Se realizaron colectas de hojas con síntomas de diferentes enfermedades de las variedades Chihuahua, Cuauhtémoc y Ópalo que fueron sembradas en los ensayos del Programa de Mejoramiento Genético de Avena del INIFAP. Se identificaron los hongos fitopatógenos: Helminthosporium sativum, H. victoriae, H. avenae, Puccinia coronata, P. graminis f. sp. avenae, Curvularia sp., y los saprófitos Alternaria sp., y Phoma sp. La enfermedad con mayor incidencia en las tres regiones de estudio fue Puccinia graminis f. sp. avenae.

AC Hunter oat

1993 ◽  
Vol 73 (4) ◽  
pp. 1099-1101 ◽  
Author(s):  
V. D. Burrows ◽  
G. McDiarmid
Keyword(s):  
Stem Rust ◽  
Avena Sativa ◽  
Barley Yellow Dwarf Virus ◽  
Puccinia Coronata ◽  
Puccinia Graminis ◽  
Loose Smut ◽  
Feed Industry ◽  
Barley Yellow Dwarf ◽  
Cultivar Description ◽  
Yellow Dwarf Virus

AC Hunter is a high yielding, white-hulled, daylength-sensitive, spring oat (Avena sativa L.) cultivar suitable for the feed industry in Quebec and Ontario. Its hull percentage is higher than is desirable for milling purposes but most of its yield and agronomic characteristics compare favourably with the check cultivars. AC Hunter is resistant to victoria blight (Bipolaris victoriae (Meehan and Murphy) Shoem.), loose smut (Ustilago avenae (Pers.) Rostr.) and to races CR13 and CR36 of crown rust (Puccinia coronata f. sp. avenae Eriks. and E. Henn.). It is susceptible to septoria blotch (Septoria avenae Frank, f. sp. avenae), red leaf (barley yellow dwarf virus) and stem rust (Puccinia graminis Pers. f. sp. avenae Eriks and E. Henn.) but shows field reactions similar to the better checks. Key words: Avena sativa L., rust, smut, cultivar description, oat

scholarly journals Virulence of Oat Crown Rust in Brazil and Uruguay

Plant Disease ◽  
2005 ◽  
Vol 89 (8) ◽  
pp. 802-808 ◽  
Author(s):  
K. J. Leonard ◽  
J. A. Martinelli
Keyword(s):  
Avena Sativa ◽  
Western Siberia ◽  
Specific Resistance ◽  
The United States ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
South American ◽  
Oat Crown Rust ◽  
High Virulence ◽  
Important Disease

Race-specific resistance to crown rust, the most important disease of oat (Avena sativa) in Bra-zil, often fails within a few years of use in Brazilian cultivars. Virulence of 144 isolates of Puccinia coronata from cultivated oat in Brazil in 1997 to 1999 and 36 isolates from Uruguay in 1994-95 and 1998 was tested on a set of 27 oat crown rust differentials lines, each with a different Pc gene for race-specific resistance. Frequencies of virulence and mean virulence complexity were compared among these five collections from Brazil and Uruguay as well as with mean virulence complexity for a collection of 17 isolates from cultivated oat in western Siberia in Russia. Virulence-avirulence for each of the 27 Pc genes was polymorphic in both Brazil and Uruguay. Virulence frequencies were similar for collections from Brazil in 1998 and 1999 and for the collection from Uruguay from 1998, but there were large differences between the 1997 collection and the 1998 and 1999 collections from Brazil. Mean virulence complexity in both Brazil and Uruguay was greater than reported in the United States and much greater than in the Russian collection of P. coronata. A large number of races of P. coronata were found, with no more than five isolates of any race found in a single year in Brazil or Uruguay. The high virulence complexity and great diversity of virulence polymorphisms in Brazil and Uruguay make it unlikely that race-specific resistance can be effective there even though the South American populations of P. coronata are apparently entirely asexual.

scholarly journals Erratum to Quantitative trait loci for partial resistance to crown rust, Puccinia coronata, in cultivated oat, Avena sativa L.

2005 ◽  
Vol 112 (1) ◽  
pp. 195-197 ◽  
Author(s):  
V. A. Portyanko ◽  
G. Chen ◽  
H. W. Rines ◽  
R. L. Phillips ◽  
K. J. Leonard ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Avena Sativa ◽  
Quantitative Trait ◽  
Partial Resistance ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Trait Loci

scholarly journals Virulence of Oat Crown Rust in Mexico

Plant Disease ◽  
2005 ◽  
Vol 89 (9) ◽  
pp. 941-948 ◽  
Author(s):  
K. J. Leonard ◽  
J. Huerta-Espino ◽  
J. J. Salmeron
Keyword(s):  
Avena Sativa ◽  
Virulence Genes ◽  
Specific Resistance ◽  
The United States ◽  
Puccinia Coronata ◽  
Central Mexico ◽  
Nuevo Leon ◽  
Oat Crown Rust ◽  
Nuevo León ◽  
Pathogenic Races

Virulence of isolates of Puccinia coronata collected during 1992 to 1998 from Sonora, Chihua-hua, Nuevo Leon, and five states in Central Mexico were compared on a set of 27 differential oat (Avena sativa) lines with different genes for race-specific resistance. Frequencies of virulence and the presence of specific pathogenic races were compared among the four regions of Mexico and between Mexico and the adjoining states of California and Texas in the United States. The P. coronata populations in Mexico were highly diverse even though the sexual stage of the fungus is not known to occur there. Overall virulence frequencies were most similar between Chihuahua and Nuevo Leon, but there were more races in common between Central Mexico and Chihuahua than between any other pair of regions of Mexico. No races found in Sonora were found in other regions of Mexico. More races found in Texas also occurred in Nuevo Leon than in any other region of Mexico. Mean virulence complexity was lowest in isolates from central Mexico; greatest in Sonora, California, and Texas; and intermediate in Chihuahua and Nuevo Leon. Significant (P < 0.05) associations of virulences occurred for 24 pairs of virulence genes in at least three of the four regions of Mexico. Virulences to 19 of the 24 pairs were also significantly associated in Texas; virulences to 13 were also significantly associated in California.

Lee Williams hulless oat

2009 ◽  
Vol 89 (4) ◽  
pp. 665-669
Author(s):  
J W Mitchell Fetch ◽  
S Kibite ◽  
J Chong ◽  
G W Clayton ◽  
T G Fetch ◽  
...  
Keyword(s):  
Avena Sativa ◽  
Barley Yellow Dwarf Virus ◽  
Genetic Resistance ◽  
Puccinia Coronata ◽  
Western Canada ◽  
Barley Yellow Dwarf ◽  
Livestock Feed ◽  
Cultivar Description ◽  
Yellow Dwarf Virus ◽  
Moderate Resistance

Lee Williams is a high-yielding hulless oat (Avena sativa L.) with good disease resistance and good straw strength. It is well adapted to all of the oat producing regions of western Canada. It carries genetic resistance to several races of crown rust (caused by Puccinia coronata Corda f. sp. avenea Eriks.) and stem rust (caused by P. graminis f. sp. avenae Pers.), loose [Ustilago avenae (Pers.) Rostr.], and covered smut (U. kolleri Wille), and moderate resistance to barley yellow dwarf virus (BYDV). Lee Williams has protein and oil levels and a high groat to hull ratio that make it well-suited for livestock feed. Hulless oat may retain a low percentage of hulls after threshing so a high groat to hull ratio is desirable. Lee Williams was supported for registration at the Prairie Regional Recommending Committee for Grains meeting in February 2002.Key words: Oat, Avena sativa L., cultivar description, hulless oat

THERMAL STABILITY OF STEM RUST RESISTANCE IN OAT SEEDLINGS

1967 ◽  
Vol 45 (4) ◽  
pp. 451-458 ◽  
Author(s):  
J. W. Martens ◽  
R. I. H. McKenzie ◽  
G. J. Green
Keyword(s):  
Stem Rust ◽  
Avena Sativa ◽  
Low Temperatures ◽  
Rust Resistance ◽  
Thermal Sensitivity ◽  
Stem Rust Resistance ◽  
Puccinia Graminis ◽  
Physiologic Race ◽  
Plant Genotype ◽  
Thermal Stability Of

Six of the identified genes for stem rust (Puccinia graminis Pers. f. sp. avenae Erikss. and Henn.) resistance in oats (Avena sativa L.) are divided into three categories of thermal sensitivity: resistance conferred by genes A and D is stable; that conferred by genes H and F 'breaks down' at intermediate temperatures; and that conferred by genes B and E breaks down at relatively low temperatures. Studies of oat lines carrying single or several resistance genes indicate that thermal sensitivity of the reactions conditioned by the genes conferring labile resistance is not affected by the presence of genes conferring stable resistance or by the rest of the host plant genotype. The critical temperature of breakdown varies with physiologic race.

Quantitative trait loci for partial resistance to crown rust, Puccinia coronata, in cultivated oat, Avena sativa L.

2005 ◽  
Vol 111 (2) ◽  
pp. 313-324 ◽  
Author(s):  
V. A. Portyanko ◽  
G. Chen ◽  
H. W. Rines ◽  
R. L. Phillips ◽  
K. J. Leonard ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Avena Sativa ◽  
Quantitative Trait ◽  
Partial Resistance ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Trait Loci
Sign in / Sign up

Export Citation Format

Share Document