采用石英砂溶液培养法 ,研究缩节安 (DPC)和氯化钙溶液浸种处理对种子萌发出苗期棉株耐盐性的调节作用。结果表明 ,在 15 0 mm ol/ L Na Cl胁迫下 ,除 0 .5 mg/ L DPC和 10 mm ol/ L Ca Cl2 浸种处理以外 ,1.0～ 3.0mg/ L DPC和 2 0～ 6...采用石英砂溶液培养法 ,研究缩节安 (DPC)和氯化钙溶液浸种处理对种子萌发出苗期棉株耐盐性的调节作用。结果表明 ,在 15 0 mm ol/ L Na Cl胁迫下 ,除 0 .5 mg/ L DPC和 10 mm ol/ L Ca Cl2 浸种处理以外 ,1.0～ 3.0mg/ L DPC和 2 0～ 6 0 m mol/ L Ca Cl2 浸种均显著降低棉花发芽势、出苗率和二叶期棉苗干物重 ;1.0～ 2 .0 mg/ LDPC和 10～ 6 0 mm ol/ L Ca Cl2 处理显著地降低棉花地上部 Na+ 含量、增加 K+ 含量、提高 K+ / Na+ ,其中以 1.5 m g/L DPC和 2 0 mm ol/ L Ca Cl2 处理效应最明显。展开更多
The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both g...The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both germination and young seedling stage. The results showed the germination and growth of peanut were significantly inhibited by salt stress, which were enhanced by salt concentration increasing. The 0.5% NaCI was selected as the most suitable concentration for further identification, and the characters in germination stage （including the relative germination potential, relative germination rate and germination index） and young seedling stage （including relative main root length, seedling height, fresh weight, dry weight, et aL） were measured. Cluster analysis showed the varieties could be divided into different groups, and 9 and 3 salt-tolerant varieties were identified in the two stages, respec- tively, including two varieties performed well in both two stages, which could be useful for the breeding of new salt tolerance varieties and the study of salt toler- ance mechanism.展开更多
文摘采用石英砂溶液培养法 ,研究缩节安 (DPC)和氯化钙溶液浸种处理对种子萌发出苗期棉株耐盐性的调节作用。结果表明 ,在 15 0 mm ol/ L Na Cl胁迫下 ,除 0 .5 mg/ L DPC和 10 mm ol/ L Ca Cl2 浸种处理以外 ,1.0～ 3.0mg/ L DPC和 2 0～ 6 0 m mol/ L Ca Cl2 浸种均显著降低棉花发芽势、出苗率和二叶期棉苗干物重 ;1.0～ 2 .0 mg/ LDPC和 10～ 6 0 mm ol/ L Ca Cl2 处理显著地降低棉花地上部 Na+ 含量、增加 K+ 含量、提高 K+ / Na+ ,其中以 1.5 m g/L DPC和 2 0 mm ol/ L Ca Cl2 处理效应最明显。
文摘The selection and application of salt tolerance varieties in peanut is impor- tant for the exploitation of saline soil. In this study, 41 peanut varieties were select- ed for the evaluation of salt tolerance in both germination and young seedling stage. The results showed the germination and growth of peanut were significantly inhibited by salt stress, which were enhanced by salt concentration increasing. The 0.5% NaCI was selected as the most suitable concentration for further identification, and the characters in germination stage （including the relative germination potential, relative germination rate and germination index） and young seedling stage （including relative main root length, seedling height, fresh weight, dry weight, et aL） were measured. Cluster analysis showed the varieties could be divided into different groups, and 9 and 3 salt-tolerant varieties were identified in the two stages, respec- tively, including two varieties performed well in both two stages, which could be useful for the breeding of new salt tolerance varieties and the study of salt toler- ance mechanism.
