The hypersensitive reaction to bacterial canker in is simply inherited

The four o’clock plant ( Mirabilis jalapa ) displays a hypersensitive reaction to the causal agent of bacterial canker, Clavibacter michiganensis subsp. michiganensis . Two lines of M. jalapa were crossed with one another and a local weed accession not showing the same reaction. All F 1 progeny disp...

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Bibliographic Details
Published in:Australasian plant pathology 1996, Vol.25 (1), p.64-67
Main Authors: A.M. Hibberd, G. Piperidis, I.D. Godwin
Format: Article
Language:English
Online Access:Get full text
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Summary:The four o’clock plant ( Mirabilis jalapa ) displays a hypersensitive reaction to the causal agent of bacterial canker, Clavibacter michiganensis subsp. michiganensis . Two lines of M. jalapa were crossed with one another and a local weed accession not showing the same reaction. All F 1 progeny displayed the hypersensitive reaction within 48 h of inoculation with suspensions of Clavibacter michiganensis subsp. michiganensis . Selfed F 2 progenies of the two hypersensitive parents were shown to be hypersensitive. F 2 populations derived from crosses between either hypersensitive parent and the local non-hypersensitive line displayed Mendelian segregation ratios, 3 hypersensitive: 1 non-hypersensitive. There were no maternal effects. This demonstrates that the trait is under the control of a single dominant gene. Morphological traits including flower colour and cotyledon colour were under more -complex genetic control. Australasian Plant Pathology 25(1) 64 - 67 Full text doi:10.1071/AP96011 © CSIRO 1996
ISSN:1448-6032
DOI:10.1071/AP96011