The Experts below are selected from a list of 273 Experts worldwide ranked by ideXlab platform
D. Rubiales - One of the best experts on this subject based on the ideXlab platform.
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flower and pod source influence on pea weevil Bruchus pisorum oviposition capacity and preference
Frontiers in Plant Science, 2019Co-Authors: T Aznarfernandez, D. RubialesAbstract:Bruchus pisorum is an insect pest causing major damage to pea seeds worldwide. Control is difficult and limited resistance is available. In this work we studied the effects of pollen and pod source on insect fecundity and oviposition by comparing resistant and susceptible Pisum spp. accessions and non-host (Lathyrus sativus and Vicia faba) species. A first no-choice assay revealed that the source of flower offered to adults for feeding might retard oviposition (the case of V. faba), reduce fertility (P. sativum ssp. syriacum, P. fulvum and V. faba) or increase adult mortality (V. faba and P. sativum ssp. syriacum). A second no-choice assay with all adults fed with pollen of the same pea cultivar showed significant effect of the source of pods offered. Oviposition was reduced on pods of some resistant Pisum accessions, but particularly low on pods of the non-hosts, being retarded if ever happening and coupled with high mortality of adults. This was confirmed in a third experiment consisting on dual-choice assays showing reduced egg laying in V. faba, L. sativus, P. fulvum and P. sativum ssp. syriacum compared to the commercial variety pea used as a control (Messire).
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Identification and multi-environment validation of resistance to pea weevil (Bruchus pisorum) in Pisum germplasm
Journal of Pest Science, 2018Co-Authors: T. Aznar-fernández, E. Carrillo-perdomo, F. Flores, D. RubialesAbstract:Pea weevil ( Bruchus pisorum ) is a damaging insect pest affecting pea production worldwide. The aim of this study was to identify sources of resistance to pea weevil in a Pisum spp. germplasm in multi-environment field tests. Seed infestation and larval development were assessed in each environment and subjected to a heritability-adjusted genotype and genotype x environment biplot analysis. Results showed that seed infestation and larval development are independent traits. Accessions P669 ( P. sativum ssp. elatius ) and P656 ( P. fulvum ) showed a stable reduction in seed infestation across environments. Meanwhile, accessions P314 ( P. sativum ssp. elatius ) and P1 ( P . abyssinicum ) showed a stable reduction in larval development. The most promising accession was P665 ( P. sativum ssp. syriacum) which showed resistance at both pod and seed levels. This study demonstrates the importance of environmental conditions for pea weevil infestation. Moreover, by submitting data to a CCA, the influence of climatic parameters over seed infestation and larval development has been elucidated.
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identification of resistance to pea weevil Bruchus pisorum in pea germplasm
2015Co-Authors: T Aznarfernandez, Estefania Carrillo, D. RubialesAbstract:Trabajo presentado en la V Meeting Asociacion Espanola de Leguminosas, AEL (Eucarpia International Symposium on Protein Crops), celebrada en Pontevedra del 4 al 7 de mayo de 2015.
Hella Wendt - One of the best experts on this subject based on the ideXlab platform.
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Bruchus ecalcaratus K. Daniel, 1906 – ein Synonym zu Bruchus rufimanus Boheman, 1833. (Coleoptera, Chrysomeloidea, Bruchidae)
Deutsche Entomologische Zeitschrift, 1993Co-Authors: Hella WendtAbstract:The types of Bruchus ecalcaratus K. Daniel from the mountains of North Italy are studied. The lectotype and three paralectotypes are designated. This species is established as a new synonym to Bruchus rufimanus Boheman.
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Bruchus ecalcaratus k daniel 1906 ein synonym zu Bruchus rufimanus boheman 1833 coleoptera chrysomeloidea bruchidae
Deutsche Entomologische Zeitschrift, 1993Co-Authors: Hella WendtAbstract:The types of Bruchus ecalcaratus K. Daniel from the mountains of North Italy are studied. The lectotype and three paralectotypes are designated. This species is established as a new synonym to Bruchus rufimanus Boheman.
J Huignard - One of the best experts on this subject based on the ideXlab platform.
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intensity of the reproductive diapause in a strain of Bruchus rufimanus boh coleoptera bruchidae originating from the meknes region of morocco
Acta Oecologica-international Journal of Ecology, 1993Co-Authors: J Darquenne, El E Shazly, B Tran, J HuignardAbstract:Bruchus rufimanus est un Bruchidae univoltin se developpant aux depens des graines de feve (Vicia faba L.). La souche etudiee est originaire de la region de Meknes au Maroc. Dans cette zone, les femelles colonisent les cultures en mars et commencent a pondre sur les gousses vertes a partir du mois d'avril. Les adultes de la nouvelle generation sont en diapause reproductrice et sejournent dans les graines pendant une longue periode. Ce n'est gue lorsque les graines sont placees en atmosphere humide que les adultes quittent les loges nymphales et emergent en decoupant le tegument. Les mâes et un fort pourcentage de femelles levent leur diapause lorsqu'ils sont places en jours longs (16: 8 h LD et 18: 6 h LD)
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interactions between photoperiod and food affect the termination of reproductive diapause in Bruchus rufimanus boh coleoptera bruchidae
Journal of Insect Physiology, 1992Co-Authors: B Tran, J HuignardAbstract:Abstract Bruchus rufimanus Boh. is a European bruchid developing at the expense of Vicia faba (L.) seeds. Studies in the wild have shown that the insect is univoltine. Adults present a reproductive diapause in the winter. The end of reproductive diapause results from interactions between increased duration of photophase and ingestion of pollen of the host plant V. faba. Of the two, photoperiod is the determinant parameter, since diapause does not terminate when the photoperiod is shorter than 16 h, whether or not there is feeding. The highest frequency of diapause termination is observed in 18 h light–6 h dark after consumption of the V. faba pollen. The pollen of V. faba is not only a trophic supply, but also a set of specific instructions leading to the termination of diapause, primarily in females. This interaction between climatic and biocenotic factors leads to a precise synchronization between the biological cycle of the insect and that of the host plant. Thus, females become sexually active as soon as the pods, which are the oviposition substrate, are available.
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Interactions between photoperiod and food affect the termination of reproductive diapause in Bruchus rufimanus (Boh.), (Coleoptera, Bruchidae)
Journal of Insect Physiology, 1992Co-Authors: B Tran, J HuignardAbstract:Abstract Bruchus rufimanus Boh. is a European bruchid developing at the expense of Vicia faba (L.) seeds. Studies in the wild have shown that the insect is univoltine. Adults present a reproductive diapause in the winter. The end of reproductive diapause results from interactions between increased duration of photophase and ingestion of pollen of the host plant V. faba. Of the two, photoperiod is the determinant parameter, since diapause does not terminate when the photoperiod is shorter than 16 h, whether or not there is feeding. The highest frequency of diapause termination is observed in 18 h light–6 h dark after consumption of the V. faba pollen. The pollen of V. faba is not only a trophic supply, but also a set of specific instructions leading to the termination of diapause, primarily in females. This interaction between climatic and biocenotic factors leads to a precise synchronization between the biological cycle of the insect and that of the host plant. Thus, females become sexually active as soon as the pods, which are the oviposition substrate, are available.
M W Roomi - One of the best experts on this subject based on the ideXlab platform.
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pteromalus schwenkei hymenoptera pteromalidae a new species as a primary parasite of the bean weevil Bruchus chinensis l from pakistan
Journal of Applied Entomology, 2009Co-Authors: M W Roomi, Z I Khan, S A KhanAbstract:Pteromalus schwenkei, new species is a primary parasite of bean-weevil of the genus Bruchus (Coleoptera, Bruchidae) commonly found in the southern areas of Sind province in Pakistan. It is being described and illustrated. The parasite completes a number of generations in a year, and it successfully parasitises Bruchus spp. larvae upto 30% in field populations. The liefe history of the parasite depends upon the environmental factors like temperature and humidity as well as on the physiological conditions of the host. Zusammenfassung Pteromalus schwenkei (Hymenoptera, Pteromalidae), ein neuer Primarparasit des Bohnenkafers Bruchus chinensis L. in Pakistan Die neue Parasitenart wurde in den sudlichen Gebieten der Sind Provinz in Pakistan gefunden. Er wird beschrieben und abgebildet. P. schwenkei hat mehrere Generationen im Jahr und parasitiert bis zu 30% der Bruchus-Larven. Die Grundzuge der Lebensweise und einige wichtige okologische Faktoren werden erortert.
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Pteromalus schwenkei (Hymenoptera, Pteromalidae) a New Species as a Primary Parasite of the Bean‐Weevil, Bruchus chinensis L., from Pakistan
Journal of Applied Entomology, 2009Co-Authors: M W Roomi, Z I Khan, S A KhanAbstract:Pteromalus schwenkei, new species is a primary parasite of bean-weevil of the genus Bruchus (Coleoptera, Bruchidae) commonly found in the southern areas of Sind province in Pakistan. It is being described and illustrated. The parasite completes a number of generations in a year, and it successfully parasitises Bruchus spp. larvae upto 30% in field populations. The liefe history of the parasite depends upon the environmental factors like temperature and humidity as well as on the physiological conditions of the host. Zusammenfassung Pteromalus schwenkei (Hymenoptera, Pteromalidae), ein neuer Primarparasit des Bohnenkafers Bruchus chinensis L. in Pakistan Die neue Parasitenart wurde in den sudlichen Gebieten der Sind Provinz in Pakistan gefunden. Er wird beschrieben und abgebildet. P. schwenkei hat mehrere Generationen im Jahr und parasitiert bis zu 30% der Bruchus-Larven. Die Grundzuge der Lebensweise und einige wichtige okologische Faktoren werden erortert.
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Studies on biological control of the Bean-weevil (Bruchus chinensis L.) byApanteles flavipes (Cam.) (Hymen., Braconidae)
Anzeiger für Schädlingskunde Pflanzenschutz Umweltschutz, 1997Co-Authors: M W Roomi, A. H. Shah, S. A. QureshiAbstract:Bean-weevil ( Bruchus chinensis L.) is commonly found in Sind region of Pakistan and it severely damages Mong seeds ( Phaseolus mungo L.), and some other pulses in storage conditions. The parasitoid Apanteles flavipes (Cam.), a gregarious Braconid parasite of Bean-weevil was reared under laboratory conditions with a view to exploiting it for the biological control techniques to be reported for the first time in Pakistan. This parasite completes its whole life cycle inside the body of the host by completing a number of generations in a year, and it successfully parasitises Bruchus spp. larvae inside the seed body; and its life cycle entirely depends upon the environmental factors like temperature and humidity as well as on the physiological condition of the host. It parasitised upto 45% in field population and 83% under laboratory conditions.
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studies on biological control of the bean weevil Bruchus chinensis l by apanteles flavipes cam hymen braconidae
Anzeiger für Schädlingskunde Pflanzenschutz Umweltschutz, 1997Co-Authors: M W Roomi, A. H. Shah, S. A. QureshiAbstract:Bean-weevil (Bruchus chinensis L.) is commonly found in Sind region of Pakistan and it severely damages Mong seeds (Phaseolus mungo L.), and some other pulses in storage conditions. The parasitoidApanteles flavipes (Cam.), a gregarious Braconid parasite of Bean-weevil was reared under laboratory conditions with a view to exploiting it for the biological control techniques to be reported for the first time in Pakistan. This parasite completes its whole life cycle inside the body of the host by completing a number of generations in a year, and it successfully parasitisesBruchus spp. larvae inside the seed body; and its life cycle entirely depends upon the environmental factors like temperature and humidity as well as on the physiological condition of the host. It parasitised upto 45% in field population and 83% under laboratory conditions.
Pascal Marget - One of the best experts on this subject based on the ideXlab platform.
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identification of novel sources of resistance to seed weevils Bruchus spp in a faba bean germplasm collection
Frontiers in Plant Science, 2019Co-Authors: Estefania Carrilloperdomo, Blandine Raffiot, Damien Ollivier, Chrystel Deulvot, Jeanbernard Magninrobert, Nadim Tayeh, Pascal MargetAbstract:Seed weevils (Bruchus spp.) are major pests of faba bean, causing yield losses and affecting marketability. Our objective was to identify stable sources of resistance to seed weevil attacks, determine the climatic factors that most influenced its incidence and its relationship with some phenological and agronomic traits. The accessions “BOBICK ROD115”, “COTE D’OR”, “221516” and “NOVA GRADISKA” showed increased resistance to penetration and development of larvae. Other accessions such as “QUASAR”, “109.669” and “223303” exhibited resistance to larval development. The results of this work suggest the presence of different defense mechanisms to seed weevils in faba bean, which in the future could be introgressed in elite cultivars to create resistant varieties and contribute to more sustainable agriculture with less need for pesticides. The temperature, rainfall and humidity seemed to be the climatic factors most influencing faba bean seed weevil attack while earliness and small seed weight were correlated with less infestation rates in the different experiments.