Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep
The effects of different temperatures (30/24°C and 30/18°C day/night temperatures) and N sources; nitrate (NO 3-), ammonium (NH 4+), mixed-N source (50 NO 3-:50 NH 4+) in the nutrient solution on growth and N assimilation of Curcuma alismatifolia was studied in a soil-less culture medium. Plant grew...
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th-cmuir.6653943832-495712018-09-04T04:04:06Z Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep C. Inkham K. Sueyoshi N. Ohtake T. Ohyama S. Ruamrungsri Agricultural and Biological Sciences The effects of different temperatures (30/24°C and 30/18°C day/night temperatures) and N sources; nitrate (NO 3-), ammonium (NH 4+), mixed-N source (50 NO 3-:50 NH 4+) in the nutrient solution on growth and N assimilation of Curcuma alismatifolia was studied in a soil-less culture medium. Plant grew taller when grown under the 30/24°C treatment and flower quality in terms of stalk length, size of inflorescence and number of bracts declined at low night temperatures. The highest nitrogen concentration (mg plant -1) in leaves was obtained when plants were supplied with NO 3-as the nitrogen source. Most nitrogen assimilation occurred in leaves at 30/24°C, and in fibrous roots at 30/18°C. There were positive linear relationships between the NO 3- content and NR activity in leaves, when plants were grown under both 30/24°C (R 2= 0.99) and 30/18°C (R 2= 0.96) treatments. The total amino acid concentration in NH 4+-fed plants was significantly higher than that of NO 3--fed plants. Glutamic acid (Glu) was recognized as a major form of accumulated N in old rhizomes, particularly in plants supplied with NO 3-N at 30/18°C, while asparagine (Asn) and aspartic acid (Asp) were the major form of the accumulated N in fibrous roots when plants were cultivated with low night temperature (30/18°C). 2018-09-04T04:04:06Z 2018-09-04T04:04:06Z 2011-09-01 Journal 00493589 2-s2.0-84856711499 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856711499&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49571 |
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Agricultural and Biological Sciences C. Inkham K. Sueyoshi N. Ohtake T. Ohyama S. Ruamrungsri Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep |
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The effects of different temperatures (30/24°C and 30/18°C day/night temperatures) and N sources; nitrate (NO 3-), ammonium (NH 4+), mixed-N source (50 NO 3-:50 NH 4+) in the nutrient solution on growth and N assimilation of Curcuma alismatifolia was studied in a soil-less culture medium. Plant grew taller when grown under the 30/24°C treatment and flower quality in terms of stalk length, size of inflorescence and number of bracts declined at low night temperatures. The highest nitrogen concentration (mg plant -1) in leaves was obtained when plants were supplied with NO 3-as the nitrogen source. Most nitrogen assimilation occurred in leaves at 30/24°C, and in fibrous roots at 30/18°C. There were positive linear relationships between the NO 3- content and NR activity in leaves, when plants were grown under both 30/24°C (R 2= 0.99) and 30/18°C (R 2= 0.96) treatments. The total amino acid concentration in NH 4+-fed plants was significantly higher than that of NO 3--fed plants. Glutamic acid (Glu) was recognized as a major form of accumulated N in old rhizomes, particularly in plants supplied with NO 3-N at 30/18°C, while asparagine (Asn) and aspartic acid (Asp) were the major form of the accumulated N in fibrous roots when plants were cultivated with low night temperature (30/18°C). |
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author |
C. Inkham K. Sueyoshi N. Ohtake T. Ohyama S. Ruamrungsri |
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C. Inkham K. Sueyoshi N. Ohtake T. Ohyama S. Ruamrungsri |
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C. Inkham |
title |
Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep |
title_short |
Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep |
title_full |
Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep |
title_fullStr |
Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep |
title_full_unstemmed |
Effects of temperature and nitrogen sources on growth and nitrogen assimilation of Curcuma alismatifolia Gagnep |
title_sort |
effects of temperature and nitrogen sources on growth and nitrogen assimilation of curcuma alismatifolia gagnep |
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2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84856711499&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49571 |
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