| 外源脯氨酸对盐胁迫下水稻分蘖期生长的影响 |
| |
| 引用本文： | 沙汉景,刘化龙,王敬国,杨 亮,刘 洋,邹德堂,赵宏伟.外源脯氨酸对盐胁迫下水稻分蘖期生长的影响[J].农业现代化研究,2013,34(2):230-234. |
| |
| 作者姓名： | 沙汉景 刘化龙 王敬国 杨 亮 刘 洋 邹德堂 赵宏伟 |
| |
| 作者单位： | 东北农业大学水稻研究室,黑龙江 哈尔滨 150030;东北农业大学水稻研究室,黑龙江 哈尔滨 150030;东北农业大学水稻研究室,黑龙江 哈尔滨 150030;东北农业大学水稻研究室,黑龙江 哈尔滨 150030;东北农业大学水稻研究室,黑龙江 哈尔滨 150030;东北农业大学水稻研究室,黑龙江 哈尔滨 150030;东北农业大学水稻研究室,黑龙江 哈尔滨 150030 |
| |
| 基金项目： | 国家科技支撑项目“东北平原北部(黑龙江)春玉米水稻持续丰产高效技术集成创新与示范”(编号:2011BAD16B11);黑龙江省“十二·五”科技攻关项目“高产优质节水栽培技术研究”(编号:GA10B102-5)。 |
| |
| 摘 要： | 为了探索外源脯氨酸在农业生产上的应用价值,本试验采用盆栽法研究了不同浓度外源脯氨酸(5 mmol/L、15 mmol/L、30 mmol/L、45 mmol/L)对盐胁迫下水稻分蘖期形态指标、生物量、叶绿素含量以及抗氧化酶活性的影响。结果表明:盐胁迫下水稻形态指标(株高、分蘖、单株绿叶数)、生物量、叶绿素(叶绿素a、叶绿素b和总叶绿素)和类胡萝卜素含量显著下降,超氧化物歧化酶(SOD)活性显著升高,但过氧化物酶(POD)活性无显著变化;盐胁迫下喷施不同浓度的脯氨酸对水稻植株形态指标影响不大,但可在短期内增加根鲜重和植株各部位干重,同时叶绿素、类胡萝卜素含量以及活性氧清除系统中SOD和POD的活性均有所提高。说明外源脯氨酸在一定程度上缓解了盐胁迫对水稻分蘖期生长的抑制作用,其中以30 mmol/L脯氨酸处理效果最好。
|
| 关 键 词： | 水稻 盐胁迫 脯氨酸 叶绿素 抗氧化酶 分蘖期 |
Effect of Exogenous Proline on Growth of Salt-Stressed Rice at Tillering Stage |
| |
| SHA Han-jing,LIU Hua-long,WANG Jing-guo,YANG Liang,LIU Yang,ZOU De-tang and ZHAO Hong-wei.Effect of Exogenous Proline on Growth of Salt-Stressed Rice at Tillering Stage[J].Research of Agricultural Modernization,2013,34(2):230-234. |
| |
| Authors: | SHA Han-jing LIU Hua-long WANG Jing-guo YANG Liang LIU Yang ZOU De-tang and ZHAO Hong-wei |
| |
| Institution: | Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China;Rice Research Institute, Northeast Agricultural University, Harbin, Heilongjiang 150030, China |
| |
| Abstract: | To explore the application value of exogenous proline in agricultural production, the effect of exogenous proline at different concentration (5 mmol/L, 15 mmol/L, 30 mmol/L, 45 mmol/L) on the morphological index, biomass, chlorophyll and antioxidant enzymes of salt-stressed rice were investigated by pot test. The result showed that salt stress significantly reduced the morphological index (e.g. plant height, tillers and number of green leaves per plant) biomass, the content of chlorophyll (Chl a, Chl b and total chlorophyll) and carotenoid. Moreover, the activity of superoxide dismutase (SOD) under salt stress was significantly higher than that in control (P<0.05), while the activity of peroxidase (POD) had no significantly change. However, except the little effect on morphological index, exogenous application of proline mitigated the adverse effects by increasing root fresh weight and dry weight of each part of the plant, improving chlorophyll and carotenoid content, and enhancing the activity of SOD and POD. Application of 30 mM proline proved to be more effective in inducing salt stress tolerance as compared to other levels |
| |
| Keywords: | rice salt stress proline chlorophyll antioxidant enzymes tillering stage |
|
| 点击此处可从《农业现代化研究》浏览原始摘要信息 |
| 点击此处可从《农业现代化研究》下载免费的PDF全文 |
|
