畜牧与饲料科学2025，Vol.46Issue(6)：45-52,8.DOI:10.12160/j.issn.1672-5190.2025.06.007
抗坏血酸引发对干旱胁迫下达乌里胡枝子种子活力的影响
Effects of Ascorbic Acid Priming on Seed Vigor of Lespedeza davurica under Drought Stress
摘要
Abstract
[Objective]To explore the effects of ascorbic acid(AsA)priming on the seed vigor of Lespedeza davurica under drought stress.[Methods]Taking the seeds of L.davurica'Jinnong No.1'as the test material,15%PEG-6000 solution was used to simulate drought stress.The seeds were primed with AsA solutions at concentrations of 0.5,1.0,2.0,4.0 and 8.0 mmol/L for 0(CK),3,6,9 and 12 hours respectively,followed by germination tests.The variation patterns of germination percentage(Gp),germination index(Gi),mean germination time(MGT)and seedling vigor index(SVI)were analyzed.[Results]Exogenous AsA priming improved the seed vigor of L.davurica under drought stress.Both priming concentration and duration were closely related to the changes in Gp,Gi,SVI and MGT of L.davurica seeds under drought stress.When the seeds were primed with 1.0 mmol/L AsA for 9 hours,the Gp,Gi and SVI of L.davurica seeds under drought stress reached the maximum values,while the MGT reached the minimum value.Compared with CK,Gp,Gi and SVI were increased by 200.00%,265.54%and 508.33%respectively,and MGT was shortened by 16.74%.[Conclusion]Exogenous AsA at a concentration of 1.0 mmol/L with a priming duration of 9 h showed the best effect on improving the seed vigor of L.davurica under drought stress.关键词
达乌里胡枝子/干旱胁迫/抗坏血酸/种子引发/种子活力Key words
Lespedeza davurica/drought stress/ascorbic acid/seed priming/seed vigor分类
农业科技引用本文复制引用
王晶莹,孙翔宇,夏方山,卫洋帆,柴玲,石宇艳..抗坏血酸引发对干旱胁迫下达乌里胡枝子种子活力的影响[J].畜牧与饲料科学,2025,46(6):45-52,8.基金项目
山西农业大学"十四五"生物育种工程项目(YZGC134). （YZGC134）
