Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization
The use of periodical water stress and potassium fertilization may enhance rice tolerance to drought stress and improve the crop’s instantaneous water use efficiency without much yield reduction. This study was conducted to assess the effects of different periodical water stress combined with potass...
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| Format: | Article |
| Language: | English |
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MDPI
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/36362/ http://psasir.upm.edu.my/id/eprint/36362/1/Alleviation%20of%20water%20stress%20effects%20on%20MR220%20rice%20by%20application%20of%20periodical%20water%20stress%20and%20potassium%20fertilization.pdf |
| _version_ | 1848848310954098688 |
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| author | Mohd Zain, Nurul Amalina Ismail, Mohd Razi Mahmood, Maziah Puteh, Adam Ibrahim, Mohd Hafiz |
| author_facet | Mohd Zain, Nurul Amalina Ismail, Mohd Razi Mahmood, Maziah Puteh, Adam Ibrahim, Mohd Hafiz |
| author_sort | Mohd Zain, Nurul Amalina |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The use of periodical water stress and potassium fertilization may enhance rice tolerance to drought stress and improve the crop’s instantaneous water use efficiency without much yield reduction. This study was conducted to assess the effects of different periodical water stress combined with potassium fertilization regimes on growth, yield, leaf gas exchanges and biochemical changes in rice grown in pots and compare them with standard local rice grower practices. Five treatments including (1) standard local grower’s practice (control, 80CF = 80 kg K2O/ha + control flooding); (2) 120PW15 = 120 kg K2O/ha + periodical water stress for 15 days; (3) 120DS15V = 120 kg K2O/ha + drought stress for 15 days during the vegetative stage; (4) 120DS25V = 120 kg K2O/ha + drought stress for 25 days and (5) 120DS15R = 120 kg K2O/ha + drought stress for 15 days during the reproductive stage, were evaluated in this experiment. Control and 120PW15 treatments were stopped at 100 DAS, and continuously saturated conditions were applied until harvest. It was found that rice under 120PW15 treatment showed tolerance to drought stress evidenced by increased water use efficiency, peroxidase (POX), catalase (CAT) and proline levels, maximum efficiency of photosystem II (fv/fm) and lower minimal fluorescence (fo), compared to other treatments. Path coefficient analysis revealed that most of parameters contribute directly rather than indirectly to rice yield. In this experiment, there were four factors that are directly involved with rice yield: grain soluble sugar, photosynthesis, water use efficiency and total chlorophyll content. The residual factors affecting rice yield are observed to be quite low in the experiment (0.350), confirming that rice yield was mostly influenced by the parameters measured during the study. |
| first_indexed | 2025-11-15T09:32:29Z |
| format | Article |
| id | upm-36362 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:32:29Z |
| publishDate | 2014 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-363622015-10-06T04:24:01Z http://psasir.upm.edu.my/id/eprint/36362/ Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization Mohd Zain, Nurul Amalina Ismail, Mohd Razi Mahmood, Maziah Puteh, Adam Ibrahim, Mohd Hafiz The use of periodical water stress and potassium fertilization may enhance rice tolerance to drought stress and improve the crop’s instantaneous water use efficiency without much yield reduction. This study was conducted to assess the effects of different periodical water stress combined with potassium fertilization regimes on growth, yield, leaf gas exchanges and biochemical changes in rice grown in pots and compare them with standard local rice grower practices. Five treatments including (1) standard local grower’s practice (control, 80CF = 80 kg K2O/ha + control flooding); (2) 120PW15 = 120 kg K2O/ha + periodical water stress for 15 days; (3) 120DS15V = 120 kg K2O/ha + drought stress for 15 days during the vegetative stage; (4) 120DS25V = 120 kg K2O/ha + drought stress for 25 days and (5) 120DS15R = 120 kg K2O/ha + drought stress for 15 days during the reproductive stage, were evaluated in this experiment. Control and 120PW15 treatments were stopped at 100 DAS, and continuously saturated conditions were applied until harvest. It was found that rice under 120PW15 treatment showed tolerance to drought stress evidenced by increased water use efficiency, peroxidase (POX), catalase (CAT) and proline levels, maximum efficiency of photosystem II (fv/fm) and lower minimal fluorescence (fo), compared to other treatments. Path coefficient analysis revealed that most of parameters contribute directly rather than indirectly to rice yield. In this experiment, there were four factors that are directly involved with rice yield: grain soluble sugar, photosynthesis, water use efficiency and total chlorophyll content. The residual factors affecting rice yield are observed to be quite low in the experiment (0.350), confirming that rice yield was mostly influenced by the parameters measured during the study. MDPI 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/36362/1/Alleviation%20of%20water%20stress%20effects%20on%20MR220%20rice%20by%20application%20of%20periodical%20water%20stress%20and%20potassium%20fertilization.pdf Mohd Zain, Nurul Amalina and Ismail, Mohd Razi and Mahmood, Maziah and Puteh, Adam and Ibrahim, Mohd Hafiz (2014) Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization. Molecules, 19 (2). pp. 1795-1819. ISSN 1431-5157; ESSN: 1420-3049 http://www.mdpi.com/1420-3049/19/2/1795 10.3390/molecules19021795 |
| spellingShingle | Mohd Zain, Nurul Amalina Ismail, Mohd Razi Mahmood, Maziah Puteh, Adam Ibrahim, Mohd Hafiz Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization |
| title | Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization |
| title_full | Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization |
| title_fullStr | Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization |
| title_full_unstemmed | Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization |
| title_short | Alleviation of water stress effects on MR220 rice by application of periodical water stress and potassium fertilization |
| title_sort | alleviation of water stress effects on mr220 rice by application of periodical water stress and potassium fertilization |
| url | http://psasir.upm.edu.my/id/eprint/36362/ http://psasir.upm.edu.my/id/eprint/36362/ http://psasir.upm.edu.my/id/eprint/36362/ http://psasir.upm.edu.my/id/eprint/36362/1/Alleviation%20of%20water%20stress%20effects%20on%20MR220%20rice%20by%20application%20of%20periodical%20water%20stress%20and%20potassium%20fertilization.pdf |