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| 低钾胁迫对不同钾效率苎麻基因型根系发育 及纤维产量品质的影响 | |
| 引用本文： | 李良勇,崔国贤,邹喜明,刘 峰.低钾胁迫对不同钾效率苎麻基因型根系发育 及纤维产量品质的影响[J].中国农学通报,2006,22(9):246-246. |
| 作者姓名： | 李良勇 崔国贤 邹喜明 刘 峰 |
| 作者单位： | 1. 湖南农业大学苎麻研究所,湖南,长沙,410128;湖南省烟草公司浏阳市公司,湖南,浏阳,410300 2. 湖南农业大学苎麻研究所,湖南,长沙,410128 3. 浏阳市烟草科学技术研究,湖南,浏阳,410300 |
| 基金项目： | 国家自然科学基金资助项目“低钾胁迫下苎麻体内产生的激素信号诱导(”39870542)。 |
| 摘 要： | 以2个钾营养高效基因型苎麻和2个低效基因型为试验材料，研究了低钾胁迫对不同基因型苎麻根系生长、纤维产量和品质的影响。结果表明，低钾胁迫下，苎麻生物量减少，植株显著矮化，根系生长受抑，根系吸收面积和阳离子交换量减小。但高效基因型苎麻低钾胁迫下仍具有较强的生长势（相对根系干重、相对细根干重、相对根系总吸收面积、相对根系活跃吸收面积较大），其纤维产量所受影响程度小于低效基因型（相对产量较高），有效降低了低钾胁迫对纤维品质所引致的负面影响。 |
| 关 键 词： | 寡聚半乳糖醛酸 寡聚半乳糖醛酸 苹果花叶病 防治 |
| 收稿时间： | 2006-05-20 |
| 修稿时间： | 2006-05-202006-06-01 |
Root Growth, Fiber Yield and Quality for Difference Potassium Efficiency Ramie Genotypes under Lower Potassium Stress |
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| Li Liangyong,Cui Guoxian,Zou Ximing,Liu Feng.Root Growth, Fiber Yield and Quality for Difference Potassium Efficiency Ramie Genotypes under Lower Potassium Stress[J].Chinese Agricultural Science Bulletin,2006,22(9):246-246. | |
| Authors: | Li Liangyong Cui Guoxian Zou Ximing Liu Feng |
| Institution: | 1. Ramie Research Institute of Hunan Agriculture University, Changsha 410128; 2. Liuyang Tobacco Corporation of Hunan Province, Liuyang 410300; 3. Liuyang Tobacco Research Institute, Liuyang 410300 |
| Abstract: | Four ramie genotypes (Boehmeria nivea L.) were used in this study, two of them were high efficiency while the other two were low. Pot experiment and laboratory analysis were conducted. We investigated root growth characteristics, fiber yield and quality for different potassium efficiency ramie genotypes under lower potassium stress, and founded that the lower potassium stress led to decrease in shoot biomass, hindered root growth, decreased root absorption surface area and cation exchange capacity. Under lower potassium stress, the high efficiency ramie genotypes had higher growth potential (higher relative root dry weight, relative rootlet dry weight, relative root total and active absorb surface area), and higher relative fiber yield, decreased the negative effect of lower potassium stress on fiber quality validly. |
| Keywords: | Ramie Lower Potassium Stress Root Fiber yield Fiber quality |
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