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פותח על ידי קלירמאש פתרונות בע"מ -
Oligogenic inheritance for resistance to Zucchini yellow mosaic virus in Cucurbita pepo
Year:
2000
Source of publication :
Annals of Applied Biology
Authors :
כהן, שלמה (הגנת הצומח)
;
.
פריס, הרי
;
.
Volume :
136
Co-Authors:
Paris, H.S., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30-095, Israel
Cohen, S., Department of Virolog, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Facilitators :
From page:
209
To page:
214
(
Total pages:
6
)
Abstract:
'True French' is an open-pollinated cultivar of the Zucchini (Courgette) Group of Cucurbita pepo and is susceptible to Zucchini yellow mosaic virus (ZYMV). Using C. moschata 'Menina' as the source of ZYMV resistance and following six generations of backcrossing, a true-breeding line nearly isogenic to 'True French', designated 381e, was recovered that carried ZYMV resistance, albeit not at as high a level as in 'Menina'. 'True French, and accession 381e were crossed, and their reciprocal F 1, F 2, and backcross progenies were grown in a chamber and inoculated with a highly virulent, non-aphid-transmissible strain of ZYMV. Nearly all F 1 plants and all plants of the backcross to 381e were classified as resistant. Segregation to resistant and susceptible individuals occurred in the backcross to the susceptible parent, in accordance with a 3:5 three-gene ratio of resistant: susceptible. The F 2 segregated in accordance with a ratio of 45 resistant: 19 susceptible, which would be obtained if there was one major gene for resistance, Zym-1 (Zym), and two other genes, herein designated Zym-2 and Zym-3, both of which are complementary to Zym-1. The presence of Zym-1 and either Zym-2 or Zym-3 is necessary for resistance to be expressed in young plants, but the presence of all three might be necessary for resistance to continue to be expressed during subsequent development of the plants. Evidently, Zym-2 and Zym-3 are ubiquitous in C. moschata but their susceptible alleles are much more common in C. pepo. As the level of resistance of 381e to ZYMV is not as high as that of C. moschata 'Menina', additional, as yet unidentified, genes must be involved in conferring high resistance to this virus.
Note:
Related Files :
Cucurbita moschata
Cucurbita pepo
disease resistance
Genetics
Pumpkin
virus resistance
Zucchini yellow mosaic virus
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27960
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:35
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Scientific Publication
Oligogenic inheritance for resistance to Zucchini yellow mosaic virus in Cucurbita pepo
136
Paris, H.S., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30-095, Israel
Cohen, S., Department of Virolog, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
Oligogenic inheritance for resistance to Zucchini yellow mosaic virus in Cucurbita pepo
'True French' is an open-pollinated cultivar of the Zucchini (Courgette) Group of Cucurbita pepo and is susceptible to Zucchini yellow mosaic virus (ZYMV). Using C. moschata 'Menina' as the source of ZYMV resistance and following six generations of backcrossing, a true-breeding line nearly isogenic to 'True French', designated 381e, was recovered that carried ZYMV resistance, albeit not at as high a level as in 'Menina'. 'True French, and accession 381e were crossed, and their reciprocal F 1, F 2, and backcross progenies were grown in a chamber and inoculated with a highly virulent, non-aphid-transmissible strain of ZYMV. Nearly all F 1 plants and all plants of the backcross to 381e were classified as resistant. Segregation to resistant and susceptible individuals occurred in the backcross to the susceptible parent, in accordance with a 3:5 three-gene ratio of resistant: susceptible. The F 2 segregated in accordance with a ratio of 45 resistant: 19 susceptible, which would be obtained if there was one major gene for resistance, Zym-1 (Zym), and two other genes, herein designated Zym-2 and Zym-3, both of which are complementary to Zym-1. The presence of Zym-1 and either Zym-2 or Zym-3 is necessary for resistance to be expressed in young plants, but the presence of all three might be necessary for resistance to continue to be expressed during subsequent development of the plants. Evidently, Zym-2 and Zym-3 are ubiquitous in C. moschata but their susceptible alleles are much more common in C. pepo. As the level of resistance of 381e to ZYMV is not as high as that of C. moschata 'Menina', additional, as yet unidentified, genes must be involved in conferring high resistance to this virus.
Scientific Publication
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