Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)

The responses of vegetative growth, flowering and tuberization of a Malaysian selection (M 14/4) of winged bean (Psophocarpus tetragonolobus (L.) DC.) to daylength , aerial day/night temperature, light intensity and applied growth substance were investigated under growth cabinet, glasshouse and...

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Main Author:	Wong, Kai Choo
Format:	Thesis
Language:	English English
Published:	1983
Subjects:	Winged bean - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/10204/1/FP_1983_1.pdf
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id	my-upm-ir.10204
record_format	uketd_dc
spelling	my-upm-ir.102042024-03-20T01:25:53Z Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.) 1983 Wong, Kai Choo The responses of vegetative growth, flowering and tuberization of a Malaysian selection (M 14/4) of winged bean (Psophocarpus tetragonolobus (L.) DC.) to daylength , aerial day/night temperature, light intensity and applied growth substance were investigated under growth cabinet, glasshouse and tropical field conditions. Plants grown at reasonably optimum day/night temperatures of 26/18'c under growth-cabinet conditions were more vigorous in vegetative growth with increase in daylength. However, with higher temperature regimes, this daylength effect on vegetative growth was reversed. Increase in daylength generally led to higher dry matter in the stem and less to the leaf and root system. It also resulted in higher specific leaf area and less total chlorophyll contentin the leaves. There was no evidence from the present study of a thermoperiodic response. Reducing the intensity of the natural daylight led to an increase in leaf area ratio and consequently a higher relative growth rate up to a maximum of about 45% of full natural light in tensity. Increase in nodulation was also obtained with reduction in natural light intensity. Extension growth was gene rally increased by application of GA and decreased by CCC and phosphon without affecting dry matter redistribution between the various plant organs. Short days were necessary for both flower initiation and development. A minimum number of leave s mus t have been formed on the main axis before the plant can be induced to initiate flowers. Winged bean - Case studies 1983 Thesis http://psasir.upm.edu.my/id/eprint/10204/ http://psasir.upm.edu.my/id/eprint/10204/1/FP_1983_1.pdf text en public doctoral Universiti Pertanian Malaysia Winged bean - Case studies Faculty of Agriculture Ahmad, Abdul Manat English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Ahmad, Abdul Manat
topic	Winged bean - Case studies
spellingShingle	Winged bean - Case studies Wong, Kai Choo Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)
description	The responses of vegetative growth, flowering and tuberization of a Malaysian selection (M 14/4) of winged bean (Psophocarpus tetragonolobus (L.) DC.) to daylength , aerial day/night temperature, light intensity and applied growth substance were investigated under growth cabinet, glasshouse and tropical field conditions. Plants grown at reasonably optimum day/night temperatures of 26/18'c under growth-cabinet conditions were more vigorous in vegetative growth with increase in daylength. However, with higher temperature regimes, this daylength effect on vegetative growth was reversed. Increase in daylength generally led to higher dry matter in the stem and less to the leaf and root system. It also resulted in higher specific leaf area and less total chlorophyll contentin the leaves. There was no evidence from the present study of a thermoperiodic response. Reducing the intensity of the natural daylight led to an increase in leaf area ratio and consequently a higher relative growth rate up to a maximum of about 45% of full natural light in tensity. Increase in nodulation was also obtained with reduction in natural light intensity. Extension growth was gene rally increased by application of GA and decreased by CCC and phosphon without affecting dry matter redistribution between the various plant organs. Short days were necessary for both flower initiation and development. A minimum number of leave s mus t have been formed on the main axis before the plant can be induced to initiate flowers.
format	Thesis
qualification_level	Doctorate
author	Wong, Kai Choo
author_facet	Wong, Kai Choo
author_sort	Wong, Kai Choo
title	Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)
title_short	Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)
title_full	Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)
title_fullStr	Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)
title_full_unstemmed	Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)
title_sort	effects of daylength, temperature, light intensity and applied growth substances on the growth, flowering and tuberization of winged bean (psophocarpus tetragonolobus (l.) dc.)
granting_institution	Universiti Pertanian Malaysia
granting_department	Faculty of Agriculture
publishDate	1983
url	http://psasir.upm.edu.my/id/eprint/10204/1/FP_1983_1.pdf
_version_	1804888522796040192

Effects of Daylength, Temperature, Light Intensity and Applied Growth Substances on the Growth, Flowering and Tuberization of Winged Bean (Psophocarpus Tetragonolobus (L.) Dc.)

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