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פותח על ידי קלירמאש פתרונות בע"מ -
Florogenesis of the Mediterranean geophyte Narcissus tazetta and temperature requirements for flower initiation and differentiation
Year:
2009
Source of publication :
Scientia Horticulturae
Authors :
נוי-פורת, טל
;
.
סנדלר-זיו, דורית
;
.
פליישמן, משה
;
.
קמנצקי, רינה
;
.
Volume :
120
Co-Authors:
Noy-Porat, T., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel, Department of Plant Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
Flaishman, M.A., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel
Eshel, A., Department of Plant Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
Sandler-Ziv, D., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel
Kamenetsky, R., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel
Facilitators :
From page:
138
To page:
142
(
Total pages:
5
)
Abstract:
Plant florogenesis is determined by the interaction between the genetics of the individual plant and environmental factors. Flower initiation and development of many studied plant species require low temperatures. However, some geophytes form flowers within the bulb during the summer quiescence period and do not require low temperatures for florogenesis. Narcissus tazetta was employed to study, in detail, the stages of flower development during the summer period, with special emphasis on the effect of temperature on inflorescence initiation. The sequence of morphological processes occurring during floral initiation and development was observed by SEM. During 3 years, the bulbs were subjected to different storage temperatures during the summer, and records were taken of the percentage of apical meristems that shifted from vegetative to reproductive development. Flowering and inflorescence quality were recorded after planting. It was concluded that, under natural conditions, the temperature increase in June, during the growth of the mother plant, leads to the transition of the apical meristem to the reproductive stage. Floral initiation and reproductive development in N. tazetta is promoted by high temperatures with an optimum of 25 °C. Sub- and supra-optimal temperatures (20 and 30 °C) delayed differentiation, while lower temperatures (12 °C) inhibited florogenesis completely. © 2008 Elsevier B.V. All rights reserved.
Note:
Related Files :
Bulb
Differentiation
flowering
Narcissus
Reproduction
storage temperature
temperature effect
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.scienta.2008.09.016
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23540
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:00
Scientific Publication
Florogenesis of the Mediterranean geophyte Narcissus tazetta and temperature requirements for flower initiation and differentiation
120
Noy-Porat, T., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel, Department of Plant Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
Flaishman, M.A., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel
Eshel, A., Department of Plant Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
Sandler-Ziv, D., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel
Kamenetsky, R., Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, 50250, Israel
Florogenesis of the Mediterranean geophyte Narcissus tazetta and temperature requirements for flower initiation and differentiation
Plant florogenesis is determined by the interaction between the genetics of the individual plant and environmental factors. Flower initiation and development of many studied plant species require low temperatures. However, some geophytes form flowers within the bulb during the summer quiescence period and do not require low temperatures for florogenesis. Narcissus tazetta was employed to study, in detail, the stages of flower development during the summer period, with special emphasis on the effect of temperature on inflorescence initiation. The sequence of morphological processes occurring during floral initiation and development was observed by SEM. During 3 years, the bulbs were subjected to different storage temperatures during the summer, and records were taken of the percentage of apical meristems that shifted from vegetative to reproductive development. Flowering and inflorescence quality were recorded after planting. It was concluded that, under natural conditions, the temperature increase in June, during the growth of the mother plant, leads to the transition of the apical meristem to the reproductive stage. Floral initiation and reproductive development in N. tazetta is promoted by high temperatures with an optimum of 25 °C. Sub- and supra-optimal temperatures (20 and 30 °C) delayed differentiation, while lower temperatures (12 °C) inhibited florogenesis completely. © 2008 Elsevier B.V. All rights reserved.
Scientific Publication
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