不同pH条件下镉对水稻幼苗生长的影响
Effects of Cadmium on the Growth of Rice Seedlings Under Different pH Conditions
杨明 1彭建 2刘俊 2唐瑞华 1徐佳乐 1魏佳馨1
作者信息
- 1. 常德职业技术学院,湖南 常德 415000
- 2. 常德市农林科学研究院,湖南 常德 415000
- 折叠
摘要
为探究不同pH条件下镉对水稻幼苗生长的影响,以湘岳占为供试品种,采用溶液培养法研究镉胁迫对水稻幼苗生长的影响.结果表明,不同pH清水与镉离子溶液浸种下的水稻幼苗苗高、最长根长与总根数间有差异,pH为9 时各值最大.与清水浸种比较,镉离子溶液浸种过的水稻幼苗苗高、最长根长、总根数与百株鲜重均明显降低.当pH为8 或9 时,无论清水还是镉离子溶液浸种过的水稻幼苗光合色素可达最高值.不同pH可显著影响水稻幼苗丙二醛含量,当pH为9时,清水浸种过的水稻幼苗丙二醛含量最高,而镉离子溶液浸种过的水稻幼苗丙二醛含量最低.该研究揭示了pH与镉对水稻幼苗生长特性的耦合影响,为水稻生产提供了实践参考.
Abstract
To investigate the effects of cadmium on the growth of rice seedlings under different pH conditions,taking Xiangyuezhan as the re-search materials,solution culture method was used to study the effects of cadmium stress on the growth of rice seedlings.The results showed that there were differences in the height,longest root length and total root number of rice seedlings soaked in different pH water and cadmium ion solutions,with the highest value at pH 9.Compared with water immersion,rice seedlings soaked in cadmium ion solution showed signifi-cant decrease in seedling height,longest root length,total number of roots and fresh weight per hundred plants.When the pH was 8 or 9,the photosynthetic pigments of rice seedlings soaked in both water and cadmium ion solution could reach the highest value.Different pH values could significantly affect the content of malondialdehyde in rice seedlings.When the pH value was 9,rice seedlings soaked in water had the highest content of malondialdehyde,while rice seedlings soaked in cadmium ion solution had the lowest content of malondialdehyde.This re-search revealed the coupling effect of pH and cadmium on the growth characteristics of rice seedlings,providing practical reference for rice production.
关键词
水稻/pH/镉/幼苗生长Key words
Rice/pH/Cadmium/Seedling growth引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
维普
万方数据