饲料研究2025，Vol.48Issue(6)：89-93,5.DOI:10.13557/j.cnki.issn1002-2813.2025.06.017
外源油菜素内酯引发对羊草种子萌发及幼苗生理特性的影响
Effects of exogenous brassinolide induction on seed germination and physiological characteristics of Leymus chinensi
摘要
Abstract
The aim of this study was to investigate the effect of exogenous brassinolide on Leymus chinensis seed germination and physiological characteristics of seedlings.The test materials were selected as Zhongke No.1 Leymus chinensis seeds,and five treatments were set,10 replicates were set for each treatment,and 50 Leymus chinensis seeds were selected for each replicate.Leymus chinensis seeds were soaked in 2,4-epibrassinolide solution(EBR)at different concentrations(0,0.05,0.10,0.20,and 0.30 mg/L)for 48 h,and 0 mg/L was treated as CK.The results showed that 0.05 mg/L EBR induced the highest germination rate,root length,soluble sugar(SS)content,and peroxidase(POD)activity of seedlings,which were increased by 25.56％,13.13％,70.41％,and 33.79％,respectively,compared with CK treatment.The soluble protein(SP)content and seedling length of Leymus chinensis seedlings were the highest in 0.10 mg/L EBR,which increased by 183.21％and 24.02％,respectively,compared with CK treatment.EBR priming reduced the chlorophyll a(Chla),chlorophyll b(Chlb),carotenoid(Car),chlorophyll(Chl)and superoxide dismutase(SOD)activities of Leymus chinensis seedlings.The results show that EBR priming has a dual effect on seed germination,and the EBR concentration is 0.05 mg/L.关键词
羊草/2,4-表油菜素内酯/种子萌发/生理特性Key words
Leymus chinensis/2,4-epibrassinolides/seed germination/physiological characteristics分类
农业科技引用本文复制引用
高万顺,陈浩,刘慧,马春晖..外源油菜素内酯引发对羊草种子萌发及幼苗生理特性的影响[J].饲料研究,2025,48(6):89-93,5.基金项目
重点领域科技攻关计划项目(项目编号:2023AB069) （项目编号:2023AB069）
