植物生长调节剂b6s对水稻生理生化指标的影响

Effect of the Plant Growth Regulator b6s on Rice Physiologic Character

[目的]了解新型植物生长调节物质b6s对水稻生长的生理作用。[方法]用不同浓度(0、0.3×10-4、0.9×10-4、2.7×10-4、8.1×10-4、24.3×10-4、72.9×10-4、218.7×10-4、656.1×10-4g/L)的b6s浸泡水稻种子,将处理种子置于人工气候培养箱内保湿培养,于苗期测定相关生理指标,研究植物生长调节剂b6s对水稻生理的影响。[结果]b6s对水稻的影响具有浓度效应,用浓度为2.7×10-4g/L的b6s浸种能显著提高水稻的发芽率、叶绿素含量、根系活力和过氧化氢酶活性,显著降低叶片相对电导率。[结论]b6s作为一种浸种剂其开发利用的前景很好,合适浓度的b6s能提高叶片的光合效率,且在一定程度上提高植物的抗性。

[Objective] The role of new type of plant growth regulator b6s in rice physiology was experimented. [Method] The rice seeds were soaked with b6s with different concentration（Ck（0） ,0.3×10-4,0.9×10-4,2.7×10-4,8.1×10-4,24.3×10-4,72.9×10-4,218.7×10-4 and 656.1×10-4g/L） and the experimental materials were placed in the incubator for moisture-keeping after soaked. The effect of the treatments on rice would be analyzed through the test of relevant physiological index in the seedling stage. [Results] The experimental results showed that the efficiency of b6s affecting the rice growth was various with the variation of its concentration. And the treatment of the concentration of 2.7 × 10-4 g/L of b6s could improve the rice germination rate,chlorophyll content,root activity,catalase activity and also significantly reduce the relative electrical conductivity of leaf. [Conclusion]The exogenous plant growth regulator b6s as one kind of seed-soaking agent was with good prospect in development and utilization. And the reasonable concentration could improve the photosynthetic capacity of leaf and the resistance of the plant.