Physiological changes of torch ginger (Etlingera elatior) inflorescence during development
The present study was undertaken to reveal the developmentally regulated changes in physical and physiological characteristics of torch ginger (Etlingera elatior) inflorescence in relation to its usage as a cut flower. The inflorescences at four developmental stages, i.e., tight bud (TB), six reflex...
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| Format: | Article |
| Language: | English |
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American Society for Horticultural Science
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/62761/ http://psasir.upm.edu.my/id/eprint/62761/1/Physiological%20changes%20.pdf |
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| author | Choon, Sea Yeat Ding, Phebe |
| author_facet | Choon, Sea Yeat Ding, Phebe |
| author_sort | Choon, Sea Yeat |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The present study was undertaken to reveal the developmentally regulated changes in physical and physiological characteristics of torch ginger (Etlingera elatior) inflorescence in relation to its usage as a cut flower. The inflorescences at four developmental stages, i.e., tight bud (TB), six reflexing tip (SRT), all involucral bracts unfolded (IBU), and full bloom (FB) were studied. The results revealed that the fresh and dry weights of inflorescences increased significantly from TB to FB stage. Water was the main component of inflorescence with 90.8% to 91.9% of the total mass. Thus, cell expansion resulting from water influx is crucial for inflorescence head development and bract opening. No ethylene was detected in the inflorescences at the four developmental stages. However, a significant higher respiration rate was recorded at FB stage with actively developing and opening true flowers in the inflorescence. The high respiration rate eventually leads to depletion of soluble sugars and starch grains in involucral bracts and inflorescence peduncle, respectively. Thereafter, involucral bracts showed browning and senescing. This result implies that the inflorescence head is a major sink for photoassimilates during flowering stage. Thus, soluble sugars exhaustion is expected to be a main factor of inflorescence senescence. |
| first_indexed | 2025-11-15T11:13:23Z |
| format | Article |
| id | upm-62761 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:13:23Z |
| publishDate | 2017 |
| publisher | American Society for Horticultural Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-627612022-11-07T07:29:31Z http://psasir.upm.edu.my/id/eprint/62761/ Physiological changes of torch ginger (Etlingera elatior) inflorescence during development Choon, Sea Yeat Ding, Phebe The present study was undertaken to reveal the developmentally regulated changes in physical and physiological characteristics of torch ginger (Etlingera elatior) inflorescence in relation to its usage as a cut flower. The inflorescences at four developmental stages, i.e., tight bud (TB), six reflexing tip (SRT), all involucral bracts unfolded (IBU), and full bloom (FB) were studied. The results revealed that the fresh and dry weights of inflorescences increased significantly from TB to FB stage. Water was the main component of inflorescence with 90.8% to 91.9% of the total mass. Thus, cell expansion resulting from water influx is crucial for inflorescence head development and bract opening. No ethylene was detected in the inflorescences at the four developmental stages. However, a significant higher respiration rate was recorded at FB stage with actively developing and opening true flowers in the inflorescence. The high respiration rate eventually leads to depletion of soluble sugars and starch grains in involucral bracts and inflorescence peduncle, respectively. Thereafter, involucral bracts showed browning and senescing. This result implies that the inflorescence head is a major sink for photoassimilates during flowering stage. Thus, soluble sugars exhaustion is expected to be a main factor of inflorescence senescence. American Society for Horticultural Science 2017-03 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/62761/1/Physiological%20changes%20.pdf Choon, Sea Yeat and Ding, Phebe (2017) Physiological changes of torch ginger (Etlingera elatior) inflorescence during development. HortScience, 52 (3). 479 - 482. ISSN 0018-5345; ESSN: 2327-9834 https://journals.ashs.org/hortsci/view/journals/hortsci/52/3/article-p479.xml 10.21273/HORTSCI11189-16 |
| spellingShingle | Choon, Sea Yeat Ding, Phebe Physiological changes of torch ginger (Etlingera elatior) inflorescence during development |
| title | Physiological changes of torch ginger (Etlingera elatior) inflorescence during development |
| title_full | Physiological changes of torch ginger (Etlingera elatior) inflorescence during development |
| title_fullStr | Physiological changes of torch ginger (Etlingera elatior) inflorescence during development |
| title_full_unstemmed | Physiological changes of torch ginger (Etlingera elatior) inflorescence during development |
| title_short | Physiological changes of torch ginger (Etlingera elatior) inflorescence during development |
| title_sort | physiological changes of torch ginger (etlingera elatior) inflorescence during development |
| url | http://psasir.upm.edu.my/id/eprint/62761/ http://psasir.upm.edu.my/id/eprint/62761/ http://psasir.upm.edu.my/id/eprint/62761/ http://psasir.upm.edu.my/id/eprint/62761/1/Physiological%20changes%20.pdf |