EFFETS COMPARES DE JEUNES INTERMITTENTS ET DE PERIODES EQUIVALENTES DE SUBSISTANCE SUR DES VARIETES RESISTANTES OU SENSIBLES DE POIS, PISUM SATIVUM L., SUR LA CROISSANCE, LA REPRODUCTION ET L'EXCRETION DU PUCERON DU POIS, ACYRTHOSIPHON PISUM (HARR.) (HOMO

1960 ◽  
Vol 3 (4) ◽  
pp. 315-326 ◽  
Author(s):  
JACQUES L. AUCLAIR ◽  
J. J. CARTIER
1977 ◽  
Vol 55 (6) ◽  
pp. 983-989 ◽  
Author(s):  
Jacques L. Auclair ◽  
P. N. Srivastava

Virginoparae of Acyrthosiphon pisum (Harris) collected from three different localities in the Province of Québec, Canada (Sainte-Thérèse de Blainville, Saint-Jean, and Ile aux Coudres), and two in the United States (states of Kansas and New Mexico) were reared on two normally susceptible host plants: e.g. the broad bean, Viciafaba L., variety Windsor, and the pea, Pisum sativum L., variety Lincoln. Results from growth curves suggest that the former three clones represent one or several biotypes different from the latter two, and results from mortality and rate of reproduction indicate that the clones from Saint-Jean and Sainte-Thérèse are two different biotypes. High mortality on peas indicates further that the clone from Ile aux Coudres is a biotype different from the others, whereas the clones from New Mexico and Kansas may represent only one biotype.


2011 ◽  
Vol 47 (No. 1) ◽  
pp. 25-36 ◽  
Author(s):  
M. Seidenglanz ◽  
I. Huňady ◽  
J. Poslušná ◽  
A.-K. Løes

Occurrences of pea aphids and their natural enemies (syrphids, mummies caused by entomopathogenic fungi Beauveria sp. and by the parasitic wasp Aphidius ervi) were compared in monocultures and mixtures of field peas and spring cereals in three seasons (2008–2010). At the beginning of colonisation, the occurrence of aphids was not substantially influenced by intercropping with cereals. However, the numbers of pea aphids located on inflorescences started to decline earlier in mixtures compared with monoculture. More syrphids (eggs + larvae) were found in mixtures than in monoculture, and more syrphid eggs were found in young aphid colonies (10 to 20 individuals) in mixtures. Intercropping did not influence the occurrence of fungal mummies (Beauveria sp.), but mixtures tended to have more aphid colonies infested by A. ervi in 2008 and 2009.  


2019 ◽  
Vol 240 ◽  
pp. 152996 ◽  
Author(s):  
Agnieszka Woźniak ◽  
Waldemar Bednarski ◽  
Katarzyna Dancewicz ◽  
Beata Gabryś ◽  
Beata Borowiak-Sobkowiak ◽  
...  

2018 ◽  
Vol 34 (2) ◽  
pp. 229-235 ◽  
Author(s):  
Prachi Garg ◽  
◽  
A. Hemantaranjan ◽  
Jyostnarani Pradhan ◽  
◽  
...  

2015 ◽  
Vol 50 (3) ◽  
pp. 353-360
Author(s):  
М.А. ВИШНЯКОВА ◽  
◽  
Е.В. СЕМЕНОВА ◽  
И.А. КОСАРЕВА ◽  
Н.Д. КРАВЧУК ◽  
...  

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