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Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress

The effects of duration of water stress on the growth and physiological changes of young Theobroma cacao plants were investigated. Water was withheld for 4, 8, and 12 days before watering for a period of 20 weeks. Leaf area, leaf area index, leaf, root and stern dry weights were significantly red...

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Main Authors: Ismail, Mohd Razi, Hassan, Abdul Halim, Dola, Kamariah, Jalil, Mohd Noh
Format: Article
Language:English
Published: Universiti Pertanian Malaysia 1992
Online Access:http://psasir.upm.edu.my/id/eprint/2983/1/Growth%2C_Plant_Water_Relation_and_Photosynthesis_Rate_of_Young.pdf
http://psasir.upm.edu.my/id/eprint/2983/
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spelling my.upm.eprints.29832015-03-09T04:52:10Z http://psasir.upm.edu.my/id/eprint/2983/ Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress Ismail, Mohd Razi Hassan, Abdul Halim Dola, Kamariah Jalil, Mohd Noh The effects of duration of water stress on the growth and physiological changes of young Theobroma cacao plants were investigated. Water was withheld for 4, 8, and 12 days before watering for a period of 20 weeks. Leaf area, leaf area index, leaf, root and stern dry weights were significantly reduced with duration of withholding water. There was a close relationship between photosynthesis rate and changes in leaf water potential. Leaf photosynthesis rate was reduced when leaf water potential dropped below -2.0 MPa. Determinations of plant processes showed a clear variation between three local clonal plants i.e. KKM 4, KKM 5 and KKM 25 with KKM25 recording the highest leaf water potential, stomatal conductance and leaf photosynthesis rate. Universiti Pertanian Malaysia 1992 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2983/1/Growth%2C_Plant_Water_Relation_and_Photosynthesis_Rate_of_Young.pdf Ismail, Mohd Razi and Hassan, Abdul Halim and Dola, Kamariah and Jalil, Mohd Noh (1992) Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress. Pertanika, 15 (2). pp. 93-98. ISSN 0126-6128
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 effects of duration of water stress on the growth and physiological changes of young Theobroma cacao plants were investigated. Water was withheld for 4, 8, and 12 days before watering for a period of 20 weeks. Leaf area, leaf area index, leaf, root and stern dry weights were significantly reduced with duration of withholding water. There was a close relationship between photosynthesis rate and changes in leaf water potential. Leaf photosynthesis rate was reduced when leaf water potential dropped below -2.0 MPa. Determinations of plant processes showed a clear variation between three local clonal plants i.e. KKM 4, KKM 5 and KKM 25 with KKM25 recording the highest leaf water potential, stomatal conductance and leaf photosynthesis rate.
format Article
author Ismail, Mohd Razi
Hassan, Abdul Halim
Dola, Kamariah
Jalil, Mohd Noh
spellingShingle Ismail, Mohd Razi
Hassan, Abdul Halim
Dola, Kamariah
Jalil, Mohd Noh
Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress
author_facet Ismail, Mohd Razi
Hassan, Abdul Halim
Dola, Kamariah
Jalil, Mohd Noh
author_sort Ismail, Mohd Razi
title Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress
title_short Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress
title_full Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress
title_fullStr Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress
title_full_unstemmed Growth, plant water relation and photosynthesis rate of young Theobroma cacao as influenced by water stress
title_sort growth, plant water relation and photosynthesis rate of young theobroma cacao as influenced by water stress
publisher Universiti Pertanian Malaysia
publishDate 1992
url http://psasir.upm.edu.my/id/eprint/2983/1/Growth%2C_Plant_Water_Relation_and_Photosynthesis_Rate_of_Young.pdf
http://psasir.upm.edu.my/id/eprint/2983/
_version_ 1643822479187116032
score 13.211869

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