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Characterization of 2 ecotypes of H. avenae in France by their development cycles and temperature requirements for hatching


, : Characterization of 2 ecotypes of H. avenae in France by their development cycles and temperature requirements for hatching. Bulletin OEPP 12(4): 353-359

The southern ecotype of H. avenae (Villasavary population) normally hatches in winter after a diapause of 4 to 5 months. In controlled temperature conditions (5 and 10 deg C) hatching is most intense after exposure of cysts to a constant temperature of 20 deg C for 2 months. The northern ecotype (Nuisement/Coole population) hatches naturally in spring (at 5 to 15 deg C) but hatching can be triggered off by exposure to 10 or 15 deg C following exposure to 5 deg C.

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Related references

Rivoal, R., 1982: Characterization of two ecotypes of Heterodera avenae in France on the basis of development cycle and temperature conditions for hatching. Bulletin OEPP European and Mediterranean Plant Protection Organization 12(4): 353-359

Rivoal, R., 1986: Biology of heterodera avenae wollenweber in france iv. comparative study of the hatching cycles of two ecotypes after their transfer to different climatic conditions. Two geographically distinct populations or ecotypes of Heterodera avenae display a shift in their hatching cycle in France. In a mediterranean type climate, hatching of the southern population at Villasavary mainly occurs during winter. The maximu...

Rivoal R.; Ireholm A., 1990: Hatching cycles in three populations of heterodera avenae nematoda heteroderidae from france and sweden effect of temperature on diapause development. Ferron, P , J Missonnier And B Mauchamp (Ed ) Les Colloques De L'inra (Institut National De La Recherche Agronomique), No 52 Regulation Des Cycles Saisonniers Chez Les Invertebres; (Inra (National Institute For Agronomy Research) Colloquium, No 52 Seasonal Cycle Regulation in Invertebrates); Dourdan, France, February 20-22, 270p Institut National De La Recherche Agronomique: Paris, France Illus 171-174

Rivoal R., 1986: Hatching rhythms of 2 ecotypes of heterodera avenae in france consequences of transfer to distinct climatic situations and influence of temperature. Revue de Nematologie 9(3): 306-307

Rivoal, R., 1978: Biology of heterodera avenae in france 1. differences in hatching and development cycles of 2 races fr 1 and fr 4. Two distinct geographic races of H. avenae, Fr 1 from the southern part of France and Fr 4 from the north exhibited different hatching and infestation cycles. Activity of Fr 1 was essentially hibernal, Fr 4 hatched more in the spring. This discrep...

Rivoal, R., 1978: Biology of Heterodera avenae in France. I. Differences in hatching and development cycles of two races, Fr 1 and Fr 4. In France there are 2 distinct races of Heterodera avenae, Fr 1 in the south (Aude Department), Fr 4 in the north (Marne Department). Fr 1 is active mainly in winter, Fr 4 hatches largely in spring, so that Fr 1 matures before Fr 4. When transferr...

Rivoal, R., 1982: Caracterisation de deux ecotypes d'Heterodera avenae en France par leurs cycles et conditions thermiques d'eclosion. Bulletin OEPP: 124: 353-359

Irehlom A.; Rivoal R., 1990: Comparison of hatching cycles of three populations of heterodera avenae from france and sweden in their own country and after reciprocal transfer. Nematologica 36(4): 360

Rivoal, R.; Ireholm, A., 1990: Cycles declosion de trois populations dHeterodera avenae Nem, Heteroderidae de France et Suede influence de la temperature sur levolution de leur diapause respective. Colloques de l'INRA: 52: 171-174

Hand, S.C., 1983: The effect of temperature and humidity on the duration of development and hatching success of eggs of the aphid, Sitobion avenae. Laboratory studies were carried out in the UK to determine the effect of temperature and humidity on the development and hatching of eggs of Sitobion avenae (F.). The results showed that a relatively high hatch rate (50%) was obtained at 7 deg C a...