复合盐胁迫对两个香稻品系幼苗性状的影响  

Effects of Mixed Salt Stress on Seedling Traits of Two Scented Rice Lines

作　　者：李猛 王少杰 曾权 刘秋员 曹璐 LI Meng;WANG Shaojie;ZENG Quan;LIU Qiuyuan;CAO Lu(School of Agriculture,Xinyang Agriculture and Forestry University,Xinyang 464000,China;School of Agriculture,Northwest A&F University,Yangling 712100,China;Guangshan County Dashu tea industry service center,Xinyang 464000,China)

机构地区：[1]信阳农林学院农学院,河南信阳464000 [2]西北农林科技大学农学院,陕西杨凌712100 [3]光山县大苏山茶产业服务中心,河南信阳464000

出　　处：《信阳农林学院学报》2024年第3期98-103,共6页Journal of Xinyang Agriculture and Forestry University

基　　金：信阳农林学院青年基金(QN2022003);信阳农林学院青年骨干教师培养项目(2022)。

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Na 2SO 4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。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)increased with the increase of mixed salt concentration.Among them,the change of the special SOD and POD activity was greater 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.

关 键 词：复合盐胁迫 香稻 盐浓度 幼苗生长 

分 类 号：S511.2[农业科学—作物学]