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隶属函数值法对萌发期甜高粱品种耐盐性评价
发表时间：2015-04-15 浏览量：1842 下载量：531
| 全部作者： | 张士超，袁芳，杨帆，孙秋菊，王宝山 |
| 作者单位： | 山东师范大学生命科学学院山东省逆境植物重点实验室 |
| 摘 要： | 选用Mer72-3等9个不同品种甜高粱为实验材料，分别用0，50，100 mmol"L�1 NaCl浓度对甜高粱种子进行盐胁迫处理，研究对其萌发参数及盐害率的影响。利用模糊函数值的方法对甜高粱在萌发期发芽率等13个生长生理指标进行综合评价，以期筛选出耐盐性不同的甜高粱品种，为后续探索甜高粱耐盐性机制奠定基础。实验结果表明：5-13品种耐盐性最强，2-10耐盐性最弱；与对照相比，活力指数、芽长、根鲜重、芽鲜重、芽和胚芽鞘的含水量这6个指标在不同盐浓度下均差异性显著（P < 0.05）；不同盐浓度下活力指数的盐害率最大，且与总隶属函数值的相关系数为0.950，为极显著水平（P < 0.01）。因此，活力指数盐害率可以作为甜高粱萌发期筛选耐盐品种的一个重要指标。综合评价9个甜高粱材料耐盐强弱顺序为5-13>5-16>2-9> 5-10>5-7>5-17>5-15>3-12>2-10. |
| 关 键 词： | 植物生理学；甜高粱；盐胁迫；耐盐性评价；萌发 |
| Title： | Comprehensive evaluation on salt-tolerance of Sorghum bicolor varieties by subordinate function values analysis at germination stage |
| Author： | ZHANG Shichao, YUAN Fang, YANG Fan, SUN Qiuju, WANG Baoshan |
| Organization： | Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University |
| Abstract： | Nine Sorghum bicolor varieties including Mer72-3 were used to study on effects of salinity stress (0, 50 and 100 mmol"L"1 NaCl) on germination parameters and their salt damage rates. Comprehensive evaluation on salt tolerance of S. bicolor varieties at germination stage was conducted using subordinate function value method for further study of salt-tolerant mechanism of S. bicolor. The results show that 5-13 is the most salinity tolerant while 2-10 is the most sensitive. Compared with control, vigour index, sprout length, root fresh weight, sprout fresh weight, water content of sprout and coleoptile are all significant under different concentrations of NaCl (P<0.05). The salt damage rates of vigour index is significantly correlated with salt concentration (P<0.01), and its correlation coefficient to total subordinate function value is 0.950. Therefore, the salt damage rates of vigour index can be used as an important indicator on screening for the salt resistance of S. bicolor varieties. Results of the comprehensive evaluation indicate that the salt-tolerance order of nine S. bicolor varieties is followed as 5-13> 5-16> 2-9> 5-10 > 5-7> 5-17> 5-15> 3-12> 2-10. |
| Key words： | plant physiology; Sorghum bicolor; salt stress; evaluation of salt tolerance; germination |
| 发表期数： | 2015年4月第7期 |
| 引用格式： | 张士超，袁芳，杨帆，等. 隶属函数值法对萌发期甜高粱品种耐盐性评价[J]. 中国科技论文在线精品论文，2015，8（7）：685-694. |
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