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Pea weevil (Bruchus pisorum L.) resistance and genetic diversity in field pea (Pisum sativum L.)

Teshome Gari, Abel (2015). Pea weevil (Bruchus pisorum L.) resistance and genetic diversity in field pea (Pisum sativum L.). Diss. (sammanfattning/summary) Alnarp : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2015:81
ISBN 978-91-576-8360-1
eISBN 978-91-576-8361-8
[Doctoral thesis]

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Abstract

Field pea (Pisum sativum L.) is an important source of protein in developing countries like Ethiopia. However, the production of field pea is hampered by invasive pests like the pea weevil (Bruchus pisorum L.). In this PhD project, more than a quarter of the field pea accessions available at the Ethiopian Biodiversity Institute (EBI) have been screened for resistance against pea weevils, both under field and greenhouse conditions. The screenings led to the identification of a few relatively less susceptible accessions/genotypes. Repeated field and greenhouse trials revealed that locally released, high yielding varieties are highly susceptible to pea weevil infestation. The lack of strict quarantine systems in Ethiopia to prevent the spread of infested seeds is worsening the pest distribution within the country. Hence, there is an urgent need to develop locally adapted pea weevil resistance varieties. Developing such varieties is the most effective and cheapest approach which can be supported by other integrated pest management techniques like intercropping to minimize or possibly halt economic loss due to this pest.

In the present study, we have also developed 15 new EST-SSR markers that could be used for various applications including genetic diversity assessments and genetic mapping as well as for marker assisted selection in P. sativum. Most of these markers are transferable to other taxa of the genus Pisum and related genera. Twelve of these newly developed EST-SSR markers were used to assay the genetic diversity among 46 accessions of P. sativum. This study revealed high genetic differentiation among the accessions which could be valuable for field pea breeding in the future. In addition, the findings could be used as an input for in-situ and ex-situ conservation strategies of the P. sativum and guide future collection missions.

Authors/Creators:Teshome Gari, Abel
Title:Pea weevil (Bruchus pisorum L.) resistance and genetic diversity in field pea (Pisum sativum L.)
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :26 August 2015
Depositing date:26 August 2015
Volume:2015:81
Number of Pages:38
Papers/manuscripts:
NumberReferences
ITeshome, A., Mendesil, E., Geleta, M., Andargie, D., Anderson, P., Rämert, B., Seyoum, E., Hillbur, Y., Dagne, K. and Bryngelsson, T. (2015b). Screening the primary gene pool of field pea (Pisum sativum L.) in Ethiopia for resistance against pea weevil (Bruchus pisorum L.). Genetic Resources and Crop Evolution 62:525-538.
IITeshome, A., Mendesil, E., Bryngelsson, T. and Geleta, M. Enhancing neoplasm expression in field pea (Pisum sativum L.) via intercropping and its significance in pea weevil (Bruchus pisorum L.) management (submitted).
IIITeshome, A., Bryngelsson, T. Dagne, K. and Geleta, M. (2015a). Assessment of genetic diversity in Ethiopian field pea (Pisum sativum L.) accessions with newly developed EST-SSR markers. BMC Genetics 16:102 DOI 10.1186/s12863-015-0261-5.
Place of Publication:Alnarp
Publisher:Department of Plant Breeding, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8360-1
ISBN for electronic version:978-91-576-8361-8
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F30 Plant genetics and breeding
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Agrovoc terms:bruchus, peas, pisum sativum, genetic variation, intercropping, pests of plants, genetic markers
Keywords:Bruchus pisorum, EST-SSR, field pea, genetic diversity, intercropping, Pisum sativum
URN:NBN:urn:nbn:se:slu:epsilon-e-2870
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2870
ID Code:12535
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: Mr Abel Teshome Gari
Deposited On:27 Aug 2015 11:51
Metadata Last Modified:07 Feb 2016 01:36

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