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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Control by photoperiod and the rhizomatous zone over the production of basal buds and the preservation of the rosette form in Aster cultivars
Year:
1992
Source of publication :
Scientia Horticulturae
Authors :
ולרשטיין, ישראלה
;
.
מיכל, שני
;
.
ניסים-לוי, עדה
;
.
סתו, רן
;
.
קדמן-זהבי, אבישג
;
.
Volume :
51
Co-Authors:
Wallerstein, I., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Kadman-Zahzvi, A., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Nissim, A., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Stav, R., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Michal, S., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Facilitators :
From page:
237
To page:
250
(
Total pages:
14
)
Abstract:
The role of the rhizomatous zone in the preservation of the juvenile state and in the production of basal buds and new rhizomes was studied in two Aster cultivars, 'Dark Pink Star' and 'White Butterfly', grown during winter under controlled photoperiod in a commercial greenhouse with minimum temperatures maintained at 27°C/16°C (day/night). Basal bud production was found to originate from the rhizomatous zone and to be strongly influenced by photoperiod and growth stage. Short day length (10 h sunlight) promoted and long day length (10 h sunlight + 4 h incandescent light, 3 μmol m-2 s-1 photosynthetically active radiation) retarded the production of basal buds and rhizomes in vegetative plants at different stages of development. At the transition to flowering the production of basal buds and rhizomes was increased independently of photoperiod. Under both photperiods, the application of ethephon increased the number of basal buds produced on the newly formed rhizomes. The ethephon effect was more pronounced under short day conditions even though it delayed flower initiation. Apical as well as basal meristems, detached from rosette shoots and developed in tissue culture into plantlest, retained the ability to produce leaves with juvenille morphology. The presence of a slice of rhizome attached to the basal meristem did not alter the jvenile morphology of the plantlet, but when a slice of shoot tip was attached to the apical meristem the resulting plantlet developed mature leaves. Under shortday conditions in the greenhouse, the presence of the rhizomatous zone on the rooted rosetted shoot was important for the preservation of rosette form. © 1992.
Note:
Related Files :
Aster, basal buds
growth state
juvenille morphology
photperiod
rhizome
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0304-4238(92)90122-S
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23772
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
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Scientific Publication
Control by photoperiod and the rhizomatous zone over the production of basal buds and the preservation of the rosette form in Aster cultivars
51
Wallerstein, I., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Kadman-Zahzvi, A., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Nissim, A., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Stav, R., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Michal, S., Department of Ornamental Horticulture, Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet-Dagan, 50250, Israel
Control by photoperiod and the rhizomatous zone over the production of basal buds and the preservation of the rosette form in Aster cultivars
The role of the rhizomatous zone in the preservation of the juvenile state and in the production of basal buds and new rhizomes was studied in two Aster cultivars, 'Dark Pink Star' and 'White Butterfly', grown during winter under controlled photoperiod in a commercial greenhouse with minimum temperatures maintained at 27°C/16°C (day/night). Basal bud production was found to originate from the rhizomatous zone and to be strongly influenced by photoperiod and growth stage. Short day length (10 h sunlight) promoted and long day length (10 h sunlight + 4 h incandescent light, 3 μmol m-2 s-1 photosynthetically active radiation) retarded the production of basal buds and rhizomes in vegetative plants at different stages of development. At the transition to flowering the production of basal buds and rhizomes was increased independently of photoperiod. Under both photperiods, the application of ethephon increased the number of basal buds produced on the newly formed rhizomes. The ethephon effect was more pronounced under short day conditions even though it delayed flower initiation. Apical as well as basal meristems, detached from rosette shoots and developed in tissue culture into plantlest, retained the ability to produce leaves with juvenille morphology. The presence of a slice of rhizome attached to the basal meristem did not alter the jvenile morphology of the plantlet, but when a slice of shoot tip was attached to the apical meristem the resulting plantlet developed mature leaves. Under shortday conditions in the greenhouse, the presence of the rhizomatous zone on the rooted rosetted shoot was important for the preservation of rosette form. © 1992.
Scientific Publication
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