摘要
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。
Pix(DPC)and CaCl 2 solutions were used for soaking seeds so as to regulate the salt tolerance of Gossypium hirsutum L at seedling emergence stage.It was indicated by the results that under the stress of 150 mmol/L NaCl,the seedling emergence percentage and the dry weight of plant at 2 leaf stage were decreased significantly in the seed soaking treatments with 1 0～3 0 mg/L DPC and 20～60 mmol/L CaCl 2,hence seedling growth was retarded But 0 5 mg/L DPC and 10 mmol/L CaCl 2 didnt have the effect.Na + content in the aerial part was significantly decreased whereas K + content and K +/Na + were significantly increased under the treatment with 1 0～2 0 mg/L DPC and 10～60 mmol/L CaCl 2 especially with 1 5 mg/L DPC and 20 mmol/L CaCl 2.
出处
《江苏农业学报》
CSCD
北大核心
2000年第4期204-207,共4页
Jiangsu Journal of Agricultural Sciences
基金
江苏省自然科学基金资助项目! (BK970 91)
关键词
棉花
耐盐性
萌发出苗期
氯化钙
浸种
Gossypium hirsutum L
salt tolerance
regulation
seedling emergence stage
pix
CaCl_2
