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Differential Sensitivity of Rice Cultivars to Salinity and Its Relation to Ion Accumulation and Root Tip Structure
Casparian band Ion accumulation Rice (Oryza sativa L) Root tip Salinity resistance Sodium chloride (NaCl)
2010/3/4
Effects of NaCl on the growth, ion content, root cap structure and Casparian band development were examined in four rice (Oryza sativa L.) cultivars with different salt resistance (salt-sensitive indi...
Effect of Limiting Oxygen Supply on the Ultrastructure of Root Tip Cells in the Germinating Stage of Rice Seeds
Aerobic germination Anaerobic germination Rice Root tip Ultrastructure
2009/7/21
Root tips excised from rice seeds germinated aerobically and anaerobically for 12, 18, 24, 48 and 72 h were used as experimental materials, and the changes in the ultrastructure of the plerome cells o...
重铬酸钾对蚕豆根尖细胞致畸效应的研究Study on Teratogenic Effect of Potassium Dichromate on Vicia Faba Root Tip Cells
重铬酸钾 蚕豆 微核率 色体畸变率
2008/1/8
摘要
以蚕豆根尖为材料，研究重铬酸钾对蚕豆根尖细胞的致畸效应。采用蚕豆根尖细胞的微核试验和染色体畸变试验方法，以不同浓度的重铬酸钾为诱变剂，测定蚕豆根尖细胞的微核率和染色体畸变率。结果表明：重铬酸钾能诱发较高频率的微核率，即在一定浓度范围内，其微核率随重铬酸钾处理浓度的升高而增加，但高于一定浓度后反而呈下降趋势；不同浓度的重铬酸钾均使蚕豆根尖细胞有丝分裂指数增大；重铬酸钾还能诱导蚕豆根尖细胞产生...