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Reproductive Biology of Calamus Manan Miquel

Adopting a plant improvement programme that combines silviculture and genetic improvement could increase yields of Calamus manan plantations. The silviculture of C. manan is well studied but not on the aspects of genetic improvement. Information on reproductive biology, which is one of the basis...

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Main Author: Alloysius, David
Format: Thesis
Language:English
English
Published: 1999
Online Access:http://psasir.upm.edu.my/id/eprint/9981/1/FH_1999_6_A.pdf
http://psasir.upm.edu.my/id/eprint/9981/
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spelling my.upm.eprints.99812012-07-18T03:53:22Z http://psasir.upm.edu.my/id/eprint/9981/ Reproductive Biology of Calamus Manan Miquel Alloysius, David Adopting a plant improvement programme that combines silviculture and genetic improvement could increase yields of Calamus manan plantations. The silviculture of C. manan is well studied but not on the aspects of genetic improvement. Information on reproductive biology, which is one of the basis for all genetic improvement programmes, is still lacking for C. manan. The objective of this study was therefore to investigate the reproductive biology of C. manan. The study was done in a rattan plantation located at Luasong. Tawau, Sabah. The floral morphology of C. manan was common for species in genus Calamus. Observations showed that C. manan flowered annually but with different intensities. The inflorescence emergence normally occurred in October - December and fruits matured 16-17 months after. No clear relationship was detected between inflorescence emergence and meteorological parameters. Anthesis in male plants (41 days) was found to be longer than in female plants (25 days). There were about 60,000 and 9,000 pollen grains in pre-anthesis and fallen flowers, respectively. C. manan pollens could maintained half of its initial viability for four, eight and twelve weeks if desiccated and stored at 25°C, 4°C and -18°C, respectively. Anthesis occurred at night, suggesting the important role of nocturnal insects especially moths in pollination. Bees were proposed as pollinators during the daytime. A controlled pollination experiment was conducted to determine the best pollination bag and the differences between fresh and stored pollens in effecting fertilization. The sex ratio in a planted population was found to be male-biased but had a tendency to move towards unity as the age of the stand increased. The fruit production capacity of C. manan increased as the plants grew older. The implications of the reproductive characteristics on plantation establishment of C. manan are discussed. 1999 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/9981/1/FH_1999_6_A.pdf Alloysius, David (1999) Reproductive Biology of Calamus Manan Miquel. Masters thesis, Universiti Putra Malaysia. English
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
English
description Adopting a plant improvement programme that combines silviculture and genetic improvement could increase yields of Calamus manan plantations. The silviculture of C. manan is well studied but not on the aspects of genetic improvement. Information on reproductive biology, which is one of the basis for all genetic improvement programmes, is still lacking for C. manan. The objective of this study was therefore to investigate the reproductive biology of C. manan. The study was done in a rattan plantation located at Luasong. Tawau, Sabah. The floral morphology of C. manan was common for species in genus Calamus. Observations showed that C. manan flowered annually but with different intensities. The inflorescence emergence normally occurred in October - December and fruits matured 16-17 months after. No clear relationship was detected between inflorescence emergence and meteorological parameters. Anthesis in male plants (41 days) was found to be longer than in female plants (25 days). There were about 60,000 and 9,000 pollen grains in pre-anthesis and fallen flowers, respectively. C. manan pollens could maintained half of its initial viability for four, eight and twelve weeks if desiccated and stored at 25°C, 4°C and -18°C, respectively. Anthesis occurred at night, suggesting the important role of nocturnal insects especially moths in pollination. Bees were proposed as pollinators during the daytime. A controlled pollination experiment was conducted to determine the best pollination bag and the differences between fresh and stored pollens in effecting fertilization. The sex ratio in a planted population was found to be male-biased but had a tendency to move towards unity as the age of the stand increased. The fruit production capacity of C. manan increased as the plants grew older. The implications of the reproductive characteristics on plantation establishment of C. manan are discussed.
format Thesis
author Alloysius, David
spellingShingle Alloysius, David
Reproductive Biology of Calamus Manan Miquel
author_facet Alloysius, David
author_sort Alloysius, David
title Reproductive Biology of Calamus Manan Miquel
title_short Reproductive Biology of Calamus Manan Miquel
title_full Reproductive Biology of Calamus Manan Miquel
title_fullStr Reproductive Biology of Calamus Manan Miquel
title_full_unstemmed Reproductive Biology of Calamus Manan Miquel
title_sort reproductive biology of calamus manan miquel
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/9981/1/FH_1999_6_A.pdf
http://psasir.upm.edu.my/id/eprint/9981/
_version_ 1643824493817233408
score 13.211869

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