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Two genes for resistance to Fusarium oxysporum f. sp. radicis-cucumerinum in melon (Cucumis melo, Cucurbitaceae)
Year:
2016
Source of publication :
Scientia Horticulturae
Authors :
Burger, Joseph
;
.
Cohen, Roni
;
.
Elkabetz, Meital
;
.
Hanan, Aviva
;
.
Paris, Harry
;
.
Volume :
201
Co-Authors:
Elkabetz, M., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Paris, H.S., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Burger, Y., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Hanan, A., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Cohen, R., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Facilitators :
From page:
57
To page:
60
(
Total pages:
4
)
Abstract:
Fusarium oxysporum f. sp. radicis-cucumerinum (fusarium crown rot, Forc) is an emerging pathogen of melons, Cucumis melo. Forc incites rotting of the plant crown, causing the plants to die prematurely. Most melon accessions are susceptible to this pathogen but the cantaloupe 'Hemed' is highly resistant. 'Hemed' was crossed with the susceptible muskmelon 'Dulce' to ascertain the mode of inheritance of resistance to Forc. Parental-, filial-, and backcross-generation plants were grown under controlled conditions and inoculated with Forc by using a root-dip methodology. Plants were scored as resistant or susceptible at 18 days post inoculation (dpi), when all plants of the susceptible parent 'Dulce' were dead or showed severe disease symptoms. At 18 dpi, plants of 'Hemed', the F1, and the backcross to 'Hemed' were resistant. The F2 population segregated in accordance with a 13:3 ratio, deviating significantly from a 3:1 ratio of resistant to susceptible. The backcross to 'Dulce' segregated in accordance with a 1:1 ratio of resistant to susceptible. These results indicate that 'Hemed' carries two genes for resistantance to Forc, one dominant and one recessive, which are herein designated, respectively, as Forc-1 and forc-2. Resistance to Forc is not co-inherited with resistance to F. oxysporum f. sp. melonis (fusarium wilt, Fom) races 0, 1, and 2, as both 'Hemed' and 'Dulce' are resistant to Fom races 0 and 2 and susceptible to Fom race 1. © 2016 Elsevier B.V..
Note:
Related Files :
Cucumis melo
Cucurbitaceae
disease resistance
Fusarium
Fusarium crown rot
Resistance breeding
Show More
Related Content
More details
DOI :
10.1016/j.scienta.2016.01.029
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28895
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:42
Scientific Publication
Two genes for resistance to Fusarium oxysporum f. sp. radicis-cucumerinum in melon (Cucumis melo, Cucurbitaceae)
201
Elkabetz, M., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Paris, H.S., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Burger, Y., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Hanan, A., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Cohen, R., Agricultural Research Organization, Newe Ya'ar Research Center, P. O. Box 1021, Ramat Yishay, Israel
Two genes for resistance to Fusarium oxysporum f. sp. radicis-cucumerinum in melon (Cucumis melo, Cucurbitaceae)
Fusarium oxysporum f. sp. radicis-cucumerinum (fusarium crown rot, Forc) is an emerging pathogen of melons, Cucumis melo. Forc incites rotting of the plant crown, causing the plants to die prematurely. Most melon accessions are susceptible to this pathogen but the cantaloupe 'Hemed' is highly resistant. 'Hemed' was crossed with the susceptible muskmelon 'Dulce' to ascertain the mode of inheritance of resistance to Forc. Parental-, filial-, and backcross-generation plants were grown under controlled conditions and inoculated with Forc by using a root-dip methodology. Plants were scored as resistant or susceptible at 18 days post inoculation (dpi), when all plants of the susceptible parent 'Dulce' were dead or showed severe disease symptoms. At 18 dpi, plants of 'Hemed', the F1, and the backcross to 'Hemed' were resistant. The F2 population segregated in accordance with a 13:3 ratio, deviating significantly from a 3:1 ratio of resistant to susceptible. The backcross to 'Dulce' segregated in accordance with a 1:1 ratio of resistant to susceptible. These results indicate that 'Hemed' carries two genes for resistantance to Forc, one dominant and one recessive, which are herein designated, respectively, as Forc-1 and forc-2. Resistance to Forc is not co-inherited with resistance to F. oxysporum f. sp. melonis (fusarium wilt, Fom) races 0, 1, and 2, as both 'Hemed' and 'Dulce' are resistant to Fom races 0 and 2 and susceptible to Fom race 1. © 2016 Elsevier B.V..
Scientific Publication
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