摘要
以信阳地区的两个香稻品系(特优和香稻丸)为试验材料,探究NaCl和Na2SO4复合盐(1∶1)对两个香稻品系幼苗性状的影响,采用不同浓度(0.00％、0.10％、0.40％、0.70％、1.00％)的复合盐处理试验材料.结果表明,在低浓度的复合盐胁迫下两个品系的苗高、根长、根数受抑制程度不显著;随着复合盐浓度的提高,两个香稻品系的苗高、根长、根数受到了明显的抑制.在一定复合盐浓度范围内,超氧化物歧化酶(SOD)和过氧化物酶(POD)的活性随复合盐浓度增加而增强,丙二醛(MDA)的含量随着复合盐浓度的增加而增加;其中特优的SOD和POD活性变化量大于香稻丸,MDA的含量变化量小于香稻丸.根据试验数据分析可知,特优的耐盐性优于香稻丸.
Abstract
Two scented rice lines(Teyou and Xiangdaowan)in Xinyang area were used as experimental materials to explore the effect of NaCl and Na2SO4 mixed salt(1∶1)on the seedling traits.Different concentrations(0.00％,0.10％,0.40％,0.70％,1.00％)of salt were used to treat test materials.The results showed that under the low-concentration mixed salt stress,the degree of suppression of seedling height,root length,and root number of the two lines was not significant.With the increase of the mixed salt concentration,the two scented rice lines showed significant inhibition of seedling height,root length and root number.Within a certain range of mixed salt concentration,the activities of superoxide dismutase(SOD)and peroxidase(POD)increased with the increase of mixed salt concentration,and the content of malondialdehyde(MDA)in-creased with the increase of mixed salt concentration.Among them,the change of the special SOD and POD activity was grea-ter than that of the Xiangdaowan,and the change of the MDA content was smaller than that of the Xiangdaowan.According to the analysis of the test data,it can be seen that the excellent salt tolerance is better than that of Xiangdaowan.
维普
万方数据