Nitrogen accumulation and partitioning by winged bean in response to support systems
An experiment was carried out to determine the partitioning and accumulation of nitrogen in plant components, nitrogenase activity and their relationships with seed yield of a local cultivar of winged bean (Psophocarpus tetragonolobus (L.) DC.) grown on three support systems of 0, 1, and 2 m height...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Cambridge University Press
1998
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| Online Access: | http://psasir.upm.edu.my/id/eprint/51779/ http://psasir.upm.edu.my/id/eprint/51779/1/51779.pdf |
| _version_ | 1848851923909738496 |
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| author | Rahman, Md. Motior Wan Othman, Wan Mohamad Wong, Kai Choo Shamsuddin, Zulkifli |
| author_facet | Rahman, Md. Motior Wan Othman, Wan Mohamad Wong, Kai Choo Shamsuddin, Zulkifli |
| author_sort | Rahman, Md. Motior |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | An experiment was carried out to determine the partitioning and accumulation of nitrogen in plant components, nitrogenase activity and their relationships with seed yield of a local cultivar of winged bean (Psophocarpus tetragonolobus (L.) DC.) grown on three support systems of 0, 1, and 2 m height under field conditions. Total nitrogen accumulation and nitrogen partitioning were determined throughout the growing season by measuring nitrogen content and concentration in above-ground plant tissues (leaves, stems, petioles and pods). Support heights of 1 and 2 m significantly increased total nitrogen accumulation in component parts of the plant, nitrogenase activity, nodulation, total dry matter accumulation and seed yield compared with the control. Plants grown on supports accumulated significantly higher leaf nitrogen at the vegetative stages and the contribution of seed nitrogen was also significantly higher compared with unsupported plants. Nitrogenase activity increased with onset of flowering but declined during the pod formation stage in plants grown on a support system. Unsupported plants showed higher nitrogenase activity prior to flowering possibly due to lack of photosynthate and, consequently, early senescence of leaves. |
| first_indexed | 2025-11-15T10:29:54Z |
| format | Article |
| id | upm-51779 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:29:54Z |
| publishDate | 1998 |
| publisher | Cambridge University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-517792019-10-15T01:05:06Z http://psasir.upm.edu.my/id/eprint/51779/ Nitrogen accumulation and partitioning by winged bean in response to support systems Rahman, Md. Motior Wan Othman, Wan Mohamad Wong, Kai Choo Shamsuddin, Zulkifli An experiment was carried out to determine the partitioning and accumulation of nitrogen in plant components, nitrogenase activity and their relationships with seed yield of a local cultivar of winged bean (Psophocarpus tetragonolobus (L.) DC.) grown on three support systems of 0, 1, and 2 m height under field conditions. Total nitrogen accumulation and nitrogen partitioning were determined throughout the growing season by measuring nitrogen content and concentration in above-ground plant tissues (leaves, stems, petioles and pods). Support heights of 1 and 2 m significantly increased total nitrogen accumulation in component parts of the plant, nitrogenase activity, nodulation, total dry matter accumulation and seed yield compared with the control. Plants grown on supports accumulated significantly higher leaf nitrogen at the vegetative stages and the contribution of seed nitrogen was also significantly higher compared with unsupported plants. Nitrogenase activity increased with onset of flowering but declined during the pod formation stage in plants grown on a support system. Unsupported plants showed higher nitrogenase activity prior to flowering possibly due to lack of photosynthate and, consequently, early senescence of leaves. Cambridge University Press 1998 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/51779/1/51779.pdf Rahman, Md. Motior and Wan Othman, Wan Mohamad and Wong, Kai Choo and Shamsuddin, Zulkifli (1998) Nitrogen accumulation and partitioning by winged bean in response to support systems. Experimental Agriculture, 34 (1). pp. 41-53. ISSN 0014-4797; ESSN: 1469-4441 https://www.cambridge.org/core/journals/experimental-agriculture/article/nitrogen-accumulation-and-partitioning-by-winged-bean-in-response-to-support-systems/7BFE3CF4E2F3085B85269976C4E4A99F 10.1017/S0014479798001045 |
| spellingShingle | Rahman, Md. Motior Wan Othman, Wan Mohamad Wong, Kai Choo Shamsuddin, Zulkifli Nitrogen accumulation and partitioning by winged bean in response to support systems |
| title | Nitrogen accumulation and partitioning by winged bean in response to support systems |
| title_full | Nitrogen accumulation and partitioning by winged bean in response to support systems |
| title_fullStr | Nitrogen accumulation and partitioning by winged bean in response to support systems |
| title_full_unstemmed | Nitrogen accumulation and partitioning by winged bean in response to support systems |
| title_short | Nitrogen accumulation and partitioning by winged bean in response to support systems |
| title_sort | nitrogen accumulation and partitioning by winged bean in response to support systems |
| url | http://psasir.upm.edu.my/id/eprint/51779/ http://psasir.upm.edu.my/id/eprint/51779/ http://psasir.upm.edu.my/id/eprint/51779/ http://psasir.upm.edu.my/id/eprint/51779/1/51779.pdf |