Potato seed tuber physiological age and tolerance of attack by the potato cyst nemotode Globodera pallida

2.50
Hdl Handle:
http://hdl.handle.net/10547/579232
Title:
Potato seed tuber physiological age and tolerance of attack by the potato cyst nemotode Globodera pallida
Authors:
Haydock, Patrick Peter John
Abstract:
Seed tubers conditioned to 0, 200 or 400 day-degrees above 4t were grown in land infested with Q. pallida. Plants from 400 day-degree seed emerged earlier, had larger canopies and greater dry weights early in the growing season than plants from 0 day-degree seed. However, physiological ageing reduced peak percentage ground cover and advanced crop senescence so that similar quantities of solar radiation were intercepted over the whole growth period. Overall, total and ware yields were not affected much by seed tuber physiological age. The partially resistant cultivars tested were more tolerant than the non resistant cultivars but tolerance was not usually affected by physiological age of seed tubers. The effects of nematicide treatment, initial Q. pallida population density, cultivar maturity class, cultivar resistance status and planting date on nematode multiplication, plant growth and tolerance of attack by Q. pallida are discussed. Using data from a variable temperature water bath experiment, probability and regression analysis estimated mean basal temperatures for the development of Q. pallida and Q. rostochiensis at 2.5 and S.rCi least variance analysis estimates were 3.5 and 4.rC respectively. Approximately 200 day-degrees above 3.5 and 4.rC were required from the inoculation of JJ2 of Q. pallida and G. rostochiensis to the peak numbers of JJ5 found in potato roots. From a range of chemicals tested for their ability to release antigen from Q. pallida cysts, sodium hypochlorite was found to be the most effective. Released antigen was detected using polyclonal antisera and monoclonal antibodies in an ELISA test. The potential for the development of an ELISA based diagnosis test for PCN using species-specific antibodies is discussed.
Affiliation:
Rothamsted Experimental Station
Citation:
Haydock, P.P.J. (1990) 'Potato seed tuber physiological age and tolerance of attack by the potato cyst nemotode Globodera pallida'. PhD thesis. Luton College of Higher Education.
Publisher:
University of Bedfordshire
Issue Date:
1990
URI:
http://hdl.handle.net/10547/579232
Type:
Thesis or dissertation
Language:
en
Description:
A thesis submitted to the Council for National Academic Awards in partial fulfilment of the requirements for the degree of Doctor of Philosophy
Appears in Collections:
PhD e-theses

Full metadata record

DC FieldValue Language
dc.contributor.authorHaydock, Patrick Peter Johnen
dc.date.accessioned2015-10-05T10:50:52Zen
dc.date.available2015-10-05T10:50:52Zen
dc.date.issued1990en
dc.identifier.citationHaydock, P.P.J. (1990) 'Potato seed tuber physiological age and tolerance of attack by the potato cyst nemotode Globodera pallida'. PhD thesis. Luton College of Higher Education.en
dc.identifier.urihttp://hdl.handle.net/10547/579232en
dc.descriptionA thesis submitted to the Council for National Academic Awards in partial fulfilment of the requirements for the degree of Doctor of Philosophyen
dc.description.abstractSeed tubers conditioned to 0, 200 or 400 day-degrees above 4t were grown in land infested with Q. pallida. Plants from 400 day-degree seed emerged earlier, had larger canopies and greater dry weights early in the growing season than plants from 0 day-degree seed. However, physiological ageing reduced peak percentage ground cover and advanced crop senescence so that similar quantities of solar radiation were intercepted over the whole growth period. Overall, total and ware yields were not affected much by seed tuber physiological age. The partially resistant cultivars tested were more tolerant than the non resistant cultivars but tolerance was not usually affected by physiological age of seed tubers. The effects of nematicide treatment, initial Q. pallida population density, cultivar maturity class, cultivar resistance status and planting date on nematode multiplication, plant growth and tolerance of attack by Q. pallida are discussed. Using data from a variable temperature water bath experiment, probability and regression analysis estimated mean basal temperatures for the development of Q. pallida and Q. rostochiensis at 2.5 and S.rCi least variance analysis estimates were 3.5 and 4.rC respectively. Approximately 200 day-degrees above 3.5 and 4.rC were required from the inoculation of JJ2 of Q. pallida and G. rostochiensis to the peak numbers of JJ5 found in potato roots. From a range of chemicals tested for their ability to release antigen from Q. pallida cysts, sodium hypochlorite was found to be the most effective. Released antigen was detected using polyclonal antisera and monoclonal antibodies in an ELISA test. The potential for the development of an ELISA based diagnosis test for PCN using species-specific antibodies is discussed.en
dc.language.isoenen
dc.publisherUniversity of Bedfordshireen
dc.subjectB132 Pathobiologyen
dc.subjectpotatoesen
dc.subjectpotato cyst nematodesen
dc.subjectpotato seed tubersen
dc.subjectGlobodera pallidaen
dc.titlePotato seed tuber physiological age and tolerance of attack by the potato cyst nemotode Globodera pallidaen
dc.typeThesis or dissertationen
dc.contributor.departmentRothamsted Experimental Stationen
dc.type.qualificationnamePhDen_GB
dc.type.qualificationlevelPhDen
dc.publisher.institutionUniversity of Bedfordshireen
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