Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus

The daily variations in the in situ CO2 exchange of the reproductive organs of Durio zibethinus trees, growing in an experimental field at University Putra Malaysia (UPM), were examined at different growth stages. Reproductive organs emerged on the leafless portions of branches inside the crown. The...

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Main Authors: Ogawa, Kazuharu, Abdullah, Ahmad Makmom, Awang, Muhamad, Furukawa, Akio
Format: Article
Language:English
Published: The Botanical Society of Japan and Springer-Verlag Tokyo 2005
Online Access:http://psasir.upm.edu.my/id/eprint/35106/1/Diel%20changes%20in%20the%20CO2%20exchange%20rates%20of%20reproductive%20organs%20of%20the%20tropical%20tree%20Durio%20zibethinus.pdf
http://psasir.upm.edu.my/id/eprint/35106/
http://link.springer.com/article/10.1007/s10265-005-0207-5?view=classic
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spelling my.upm.eprints.351062016-10-11T02:47:26Z http://psasir.upm.edu.my/id/eprint/35106/ Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus Ogawa, Kazuharu Abdullah, Ahmad Makmom Awang, Muhamad Furukawa, Akio The daily variations in the in situ CO2 exchange of the reproductive organs of Durio zibethinus trees, growing in an experimental field at University Putra Malaysia (UPM), were examined at different growth stages. Reproductive organs emerged on the leafless portions of branches inside the crown. The photon flux densities (PFD) in the chambers used for the measurements were less than 100 μmol m−2 s−1 and were 40% of the PFD outside of the crown. The daytime net respiration rate and the nighttime dark respiration rate were higher at the time of flower initiation and during the mixed stages, when flower buds, flowers, and fruit coexist, than at the flower bud stage. The net respiration rate was lower than the daytime dark respiration rate at given temperatures, especially at the flower bud and fruit stages. Conversely, the net respiration rate was similar to the daytime dark respiration rate at the mixed stage. Photosynthetic CO2 refixation reduced the daily respiratory loss by 17, 5, 0.3, and 24% at the flower bud, flower initiation, mixed, and fruit stages, respectively. The Botanical Society of Japan and Springer-Verlag Tokyo 2005 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/35106/1/Diel%20changes%20in%20the%20CO2%20exchange%20rates%20of%20reproductive%20organs%20of%20the%20tropical%20tree%20Durio%20zibethinus.pdf Ogawa, Kazuharu and Abdullah, Ahmad Makmom and Awang, Muhamad and Furukawa, Akio (2005) Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus. Journal of Plant Research, 118 (3). pp. 187-192. ISSN 0918-9440; ESSN: 1618-0860 http://link.springer.com/article/10.1007/s10265-005-0207-5?view=classic 10.1007/s10265-005-0207-5
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The daily variations in the in situ CO2 exchange of the reproductive organs of Durio zibethinus trees, growing in an experimental field at University Putra Malaysia (UPM), were examined at different growth stages. Reproductive organs emerged on the leafless portions of branches inside the crown. The photon flux densities (PFD) in the chambers used for the measurements were less than 100 μmol m−2 s−1 and were 40% of the PFD outside of the crown. The daytime net respiration rate and the nighttime dark respiration rate were higher at the time of flower initiation and during the mixed stages, when flower buds, flowers, and fruit coexist, than at the flower bud stage. The net respiration rate was lower than the daytime dark respiration rate at given temperatures, especially at the flower bud and fruit stages. Conversely, the net respiration rate was similar to the daytime dark respiration rate at the mixed stage. Photosynthetic CO2 refixation reduced the daily respiratory loss by 17, 5, 0.3, and 24% at the flower bud, flower initiation, mixed, and fruit stages, respectively.
format Article
author Ogawa, Kazuharu
Abdullah, Ahmad Makmom
Awang, Muhamad
Furukawa, Akio
spellingShingle Ogawa, Kazuharu
Abdullah, Ahmad Makmom
Awang, Muhamad
Furukawa, Akio
Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus
author_facet Ogawa, Kazuharu
Abdullah, Ahmad Makmom
Awang, Muhamad
Furukawa, Akio
author_sort Ogawa, Kazuharu
title Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus
title_short Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus
title_full Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus
title_fullStr Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus
title_full_unstemmed Diel changes in the CO2 exchange rates of reproductive organs of the tropical tree Durio zibethinus
title_sort diel changes in the co2 exchange rates of reproductive organs of the tropical tree durio zibethinus
publisher The Botanical Society of Japan and Springer-Verlag Tokyo
publishDate 2005
url http://psasir.upm.edu.my/id/eprint/35106/1/Diel%20changes%20in%20the%20CO2%20exchange%20rates%20of%20reproductive%20organs%20of%20the%20tropical%20tree%20Durio%20zibethinus.pdf
http://psasir.upm.edu.my/id/eprint/35106/
http://link.springer.com/article/10.1007/s10265-005-0207-5?view=classic
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