外源ABA对盐胁迫下八棱海棠苗木生长及生理特性的影响
Effect of Exogenous ABA on the Growth and Physiological Characteristics of Malus Robusta Seedlings under Salt Stress
王亚丽1
作者信息
- 1. 山西省关帝山国有林管理局,山西 文水 032104
- 折叠
摘要
在盆栽条件下,设置空白对照(CK)、盐胁迫(N1)、盐胁迫+20 mg/L ABA(N2)、盐胁迫+35 mg/L ABA(N3)、盐胁迫+50 mg/L ABA(N4)共计5个处理,研究ABA对盐胁迫下八棱海棠苗木生长和生理特性的影响.结果表明,盐胁迫处理与对照相比显著降低了八棱海棠的株高、茎粗、净光合速率、总糖含量和氨基酸含量,提高了八棱海棠的SOD活性和POD活性.外源施加ABA提高了盐胁迫处理下八棱海棠的株高、茎粗、净光合速率、SOD活性、POD活性、总糖含量和氨基酸含量.综合比较来看,35 mg/L是外源ABA改善八棱海棠苗木生理特性并促进其生长的适宜浓度.
Abstract
5 treatments including blank control(CK),salt stress(N1),salt stress+20 mg/L ABA(N2),salt stress+35 mg/L ABA(N3)and salt stress+50 mg/L ABA(N4)were set up under potted conditions to study the effects of ABA on the growth and physiological characteristics of Malus robusta seedlings under salt stress.The results showed that salt stress treatment significantly reduced the plant height,stem diameter,net photosynthetic rate,total sugar content and ami-no acid content of Malus robusta compared to the control,and increased the SOD activity and POD activity of Malus robus-ta.Exogenous application of ABA increased the plant height,stem diameter,net photosynthetic rate,SOD activity,POD activity,total sugar content and amino acid content of Malus robusta under salt stress treatment.Overall comparison showed that 35 mg/L was an appropriate concentration of exogenous ABA for improving the physiological characteristics and promo-ting the growth of Malus robusta seedlings.
关键词
ABA/盐胁迫/八棱海棠/生长情况/生理特性Key words
ABA/Salt stress/Malus robusta/Growth/Physiological characteristics引用本文复制引用
出版年
2024
NETL
NSTL
万方数据