2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline
| Format: | General Document |
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| collectionurl | https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection3 |
| copyright | Copyright©PWB2025 |
| country | Malaysia |
| date | 2018-02-13 |
| format | General Document |
| id | 15345 |
| institution | UniSZA |
| internalnotes | Sila masukkan subject wajib Dissertations, Academic. Terima kasih... |
| originalfilename | IMPROVING GROWTH, PHYSIOLOGY AND YIELD OF RICE PLANTS AND NUTRIENTS UNDER DIFFERENT WATER REGIMES USING PROLINE (PHD_2017).pdf |
| person | Mohd Khairi Bin Che Lah |
| recordtype | oai_dc |
| resourceurl | https://intelek.unisza.edu.my/intelek/pages/view.php?ref=15345 |
| sourcemedia | Server storage Scanned document |
| spelling | 15345 https://intelek.unisza.edu.my/intelek/pages/view.php?ref=15345 https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection3 General Document Malaysia Library Staff (Top Management) Library Staff (Management) Library Staff (Support) Terengganu Faculty of Bio-resources & Food Industry English application/pdf 1.5 Server storage Scanned document Universiti Sultan Zainal Abidin UniSZA Private Access Universiti Sultan Zainal Abidin SAMBox 2.3.4; modified using iTextSharp™ 5.5.10 ©2000-2016 iText Group NV (AGPL-version) 248 IMPROVING GROWTH, PHYSIOLOGY AND YIELD OF RICE PLANTS AND NUTRIENTS UNDER DIFFERENT WATER REGIMES USING PROLINE (PHD_2017).pdf 2018-02-13 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline Rice – Growth Mohd Khairi Bin Che Lah Copyright©PWB2025 Water stress due to climate change affects plant growth, physiology and yield production. It is an important concern, now a day, to increase water productivity and sustain rice production under water stress condition. Water stress is detrimental to agricultural production and plant ecosystems. Irrigated rice consumes a larger amount of fresh water which to be reduced using low water input rice production and saved water to be diverted to the areas where competition is high. In this study, the function of proline was justified to reduce the detrimental effects of water stress on growth, physiology, yield parameters and nutrients of rice plant to maintain sustainable rice production under water stress condition. The first experiment was conducted to observe the effects of different water levels on rice production. The second experiment (greenhouse) and third experiment (field) were done to find out the effects of proline and different water levels on growth, physiological parameters, and rice production. Both experiments were laid out in a completely randomized design with five replicates. In the first experiment four different water treatments, W1 (field capacity), W2 (saturated condition), W3 (1 cm flooding) and W4 (5 cm flooding; control treatment) were used. In the second and third experiments, proline concentrations (0, 50 and 100 mM) as a foliar were used with four water levels (as per experiment 1) with five replications. The fourth experiment was conducted to determine nutrients content under proline and water content. In the first experiment, chlorophyll (Chl), Chl fluorescence parameters, photosynthesis rate (Pn rate), photosynthetically active radiation (PAR), transpiration rate, stomatal conductance (SC) and relative water content (RWC) decreased in W1 treatments. Soil pH, electrical conductivity (EC), and redox potential (Eh value) showed the lowest value in W1 and W2 treatments. However, Eh value of W4 was significantly lower than other treatments. W1 and W2 treatments significantly affected yields and yield parameters of rice plants compared to W4 treatment. For experiment 2, proline improves germination and root length of the seedling. Application of proline significantly increased plant height and RWC of rice plant under W1 and W2 treatment. Chl content, SC, Fo, Fm and Fv/Fm ratio significantly increased in proline treated plant than proline-untreated plants under W1 and W2 treatments. Treatments of W1 and W2 significantly reduced CO2-in leaf, PAR, Pn rates, and transpiration rate which were increased in the proline-treated plants. In field experiment 3, proline showed a similar effect on growth, physiology and yield parameters of rice plants under water stress condition. Results in experiment 3 were consistent with experiment 2. Proline also increased photochemical quenching (ql), non-photochemical quenching (qn and NPQ) activities in leaves in rice plants which might increase photosynthesis rate. In experiment 4, phytoavailability of nutrients were analyzed under two different water depths that are 1 and 5 cm flooding in the presence or absence of 50 mM of proline. Proline application did not affect phytoavailability of N and P in soil solution. Proline treatment affected K concentration but the level was not too high. Proline improves Ca, Mg and other micronutrients’ concentration in soil with 1 cm than that of 5 cm flooding condition. However, there is no significant effect of proline on Eh value, soil pH and soil EC was observed. These results suggest that under water stress (W1 and W2 treatments) condition, proline reduced the detrimental effects of water stress growth, physiology and yield of rice plants. Therefore the physiological changes, nutrients’ phytoavailability and rice production under stress conditions (W1 and W2) were consistent with control treatment and low water input rice production can help to save the fresh water and sustain rice production. Farmers could apply irrigation water as alternative wetting and drying condition that is field capacity to the 1 cm flooding, to sustain rice production and proline could be implemented where climate change effect persist in declining water status in soil. Dissertations, Academic Sila masukkan subject wajib Dissertations, Academic. Terima kasih... Rice Plant Growth Proline in Agriculture Water Regimes and Rice Growth Thesis |
| spellingShingle | 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline |
| state | Terengganu |
| subject | Rice – Growth Dissertations, Academic |
| summary | Water stress due to climate change affects plant growth, physiology and yield production. It is an important concern, now a day, to increase water productivity and sustain rice production under water stress condition. Water stress is detrimental to agricultural production and plant ecosystems. Irrigated rice consumes a larger amount of fresh water which to be reduced using low water input rice production and saved water to be diverted to the areas where competition is high. In this study, the function of proline was justified to reduce the detrimental effects of water stress on growth, physiology, yield parameters and nutrients of rice plant to maintain sustainable rice production under water stress condition. The first experiment was conducted to observe the effects of different water levels on rice production. The second experiment (greenhouse) and third experiment (field) were done to find out the effects of proline and different water levels on growth, physiological parameters, and rice production. Both experiments were laid out in a completely randomized design with five replicates. In the first experiment four different water treatments, W1 (field capacity), W2 (saturated condition), W3 (1 cm flooding) and W4 (5 cm flooding; control treatment) were used. In the second and third experiments, proline concentrations (0, 50 and 100 mM) as a foliar were used with four water levels (as per experiment 1) with five replications. The fourth experiment was conducted to determine nutrients content under proline and water content. In the first experiment, chlorophyll (Chl), Chl fluorescence parameters, photosynthesis rate (Pn rate), photosynthetically active radiation (PAR), transpiration rate, stomatal conductance (SC) and relative water content (RWC) decreased in W1 treatments. Soil pH, electrical conductivity (EC), and redox potential (Eh value) showed the lowest value in W1 and W2 treatments. However, Eh value of W4 was significantly lower than other treatments. W1 and W2 treatments significantly affected yields and yield parameters of rice plants compared to W4 treatment. For experiment 2, proline improves germination and root length of the seedling. Application of proline significantly increased plant height and RWC of rice plant under W1 and W2 treatment. Chl content, SC, Fo, Fm and Fv/Fm ratio significantly increased in proline treated plant than proline-untreated plants under W1 and W2 treatments. Treatments of W1 and W2 significantly reduced CO2-in leaf, PAR, Pn rates, and transpiration rate which were increased in the proline-treated plants. In field experiment 3, proline showed a similar effect on growth, physiology and yield parameters of rice plants under water stress condition. Results in experiment 3 were consistent with experiment 2. Proline also increased photochemical quenching (ql), non-photochemical quenching (qn and NPQ) activities in leaves in rice plants which might increase photosynthesis rate. In experiment 4, phytoavailability of nutrients were analyzed under two different water depths that are 1 and 5 cm flooding in the presence or absence of 50 mM of proline. Proline application did not affect phytoavailability of N and P in soil solution. Proline treatment affected K concentration but the level was not too high. Proline improves Ca, Mg and other micronutrients’ concentration in soil with 1 cm than that of 5 cm flooding condition. However, there is no significant effect of proline on Eh value, soil pH and soil EC was observed. These results suggest that under water stress (W1 and W2 treatments) condition, proline reduced the detrimental effects of water stress growth, physiology and yield of rice plants. Therefore the physiological changes, nutrients’ phytoavailability and rice production under stress conditions (W1 and W2) were consistent with control treatment and low water input rice production can help to save the fresh water and sustain rice production. Farmers could apply irrigation water as alternative wetting and drying condition that is field capacity to the 1 cm flooding, to sustain rice production and proline could be implemented where climate change effect persist in declining water status in soil. |
| title | 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline |
| title_full | 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline |
| title_fullStr | 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline |
| title_full_unstemmed | 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline |
| title_short | 2017_Improving Growth, Physiology and Yield Of Rice Plants and Nutrients Under Different Water Regimes Using Proline |
| title_sort | 2017_improving growth, physiology and yield of rice plants and nutrients under different water regimes using proline |