Identification and multi-environment validation of resistance to pea weevil (Bruchus pisorum) in Pisum germplasm

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...

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Bibliographic Details
Published in:Journal of pest science 2018-03, Vol.91 (2), p.505-514
Main Authors: Aznar-Fernández, T., Carrillo-Perdomo, E., Flores, F., Rubiales, D.
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Bruchus pisorum
Ecology
Entomology
Environmental conditions
Field tests
Forestry
Genotypes
Germplasm
Heritability
Infestation
Insects
Larval development
Life Sciences
Original Paper
Pest resistance
Pisum abyssinicum
Pisum elatius
Pisum fulvum
Pisum sativum
Pisum syriacum
Plant Pathology
Plant Sciences
Reduction
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Summary: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.
ISSN:1612-4758
1612-4766
DOI:10.1007/s10340-017-0925-1