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Ethylene-insensitive related phenotypes exist naturally in a genetically variable population of Dianthus barbatus
Year:
2001
Source of publication :
Theoretical and Applied Genetics
Authors :
Barak, Amiram
;
.
Friedman, Haya
;
.
Hagiladi, Amir
;
.
Resnick, Nathalie
;
.
Umiel, Nakdimon
;
.
Volume :
103
Co-Authors:
Friedman, H., Department of Postharvest Science
Hagiladi, A., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Resnick, N., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Barak, A., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Umiel, N., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
282
To page:
287
(
Total pages:
6
)
Abstract:
Within the genetically variable population of Dianthus barbatus "Dagan", we identified genetic lines with flowers possessing ethylene insensitivite-related phenotypes. The phenotypes are: Caf+, with a fresh-looking corolla attached to a mature ovary; Inr-, with flowers whose petals do not inroll during flower senescence; and Rfi+, whose flower petals inroll, but recover from inrolling. The frequencies of Caf+, Inr- and Rfi+ were 33%, 25% and 75% in the population inspected, respectively. These relatively high frequencies were probably due to continuous selection over the years for flowers with open and long-lasting corollas. By examining the distribution of the genetic lines which express two of these phenotypes, we determined that Caf+, Inr- and Rfi+ are independent traits. However, these traits might be associated with male sterility. Exposure of a random sample of the population to exogenous ethylene, followed by examination of the resulting inrolling and wilting, revealed five different ethylene response groups. In one group ethylene enhanced both inrolling and wilting, and most genetic lines within this group exhibited a Caf- phenotype. In two other groups ethylene enhanced either the inrolling or the wilting, and both of the Caf+ and Caf- phenotypes were included. Two other groups were completely non-responsive to ethylene, but in one of them the flower life span was twice as long as in the other, and all the genetic lines exhibited the Caf+ phenotype. We concluded that the Caf+ phenotype is most-likely related to ethylene insensitivity and that the inrolling and wilting are controlled by ethylene, probably via different pathways.
Note:
Related Files :
Dianthus
ethylene
Genes
genetic line
Genetic lines
phenotype
senescence
wilting
Show More
Related Content
More details
DOI :
10.1007/s001220100574
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28983
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:43
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Scientific Publication
Ethylene-insensitive related phenotypes exist naturally in a genetically variable population of Dianthus barbatus
103
Friedman, H., Department of Postharvest Science
Hagiladi, A., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Resnick, N., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Barak, A., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Umiel, N., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan 50250, Israel
Ethylene-insensitive related phenotypes exist naturally in a genetically variable population of Dianthus barbatus
Within the genetically variable population of Dianthus barbatus "Dagan", we identified genetic lines with flowers possessing ethylene insensitivite-related phenotypes. The phenotypes are: Caf+, with a fresh-looking corolla attached to a mature ovary; Inr-, with flowers whose petals do not inroll during flower senescence; and Rfi+, whose flower petals inroll, but recover from inrolling. The frequencies of Caf+, Inr- and Rfi+ were 33%, 25% and 75% in the population inspected, respectively. These relatively high frequencies were probably due to continuous selection over the years for flowers with open and long-lasting corollas. By examining the distribution of the genetic lines which express two of these phenotypes, we determined that Caf+, Inr- and Rfi+ are independent traits. However, these traits might be associated with male sterility. Exposure of a random sample of the population to exogenous ethylene, followed by examination of the resulting inrolling and wilting, revealed five different ethylene response groups. In one group ethylene enhanced both inrolling and wilting, and most genetic lines within this group exhibited a Caf- phenotype. In two other groups ethylene enhanced either the inrolling or the wilting, and both of the Caf+ and Caf- phenotypes were included. Two other groups were completely non-responsive to ethylene, but in one of them the flower life span was twice as long as in the other, and all the genetic lines exhibited the Caf+ phenotype. We concluded that the Caf+ phenotype is most-likely related to ethylene insensitivity and that the inrolling and wilting are controlled by ethylene, probably via different pathways.
Scientific Publication
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