摘要
该研究分别以 0%、5%、10%、15%和 20%的 PEG-6000 模拟干旱胁迫,研究不同干旱处理对 4 个多年生黑麦草品种种子发芽势、发芽率、发芽指数、抗旱指数、胚芽长、胚根长及鲜重等指标的影响.结果表明:4 个多年生黑麦草品种在不同干旱条件下萌发期各指标均产生一定的变化,且存在较大的品种差异,随着胁迫强度的增加,各指标下降幅度逐渐增大.通过隶属函数法综合评价,各品种的抗旱性强弱依次为:泰绿>丽川>绿拓>闪电.
Abstract
This study simulated drought stress with PEG-6000 at 0%,5%,10%,15%,and 20%,and studied the effects of different drought treatments on the germination potential,germination rate,germination index,drought resistance index,plumule length,radicle length,and fresh weight of four perennial ryegrass varieties.The results showed that four perennial ryegrass varieties showed certain changes in various indicators during the germination period under different drought conditions,and there were significant differences among the varieties.As the stress intensity increased,the decline in various indicators gradually increased.Through comprehensive evaluation using the membership function method,the drought resistance of each variety was ranked as follows:Tailv>Lichuan>Lvtuo>Shandian.
基金项目
河北省高等学校科学技术研究项目(QN2021419)
NETL
NSTL
万方数据