浙江农业科学 ›› 2024, Vol. 65 ›› Issue (9): 2132-2137.DOI: 10.16178/j.issn.0528-9017.20230740

• 观赏园艺 • 上一篇    下一篇

4个多年生黑麦草品种的萌发期抗旱性比较

熊雪1,2(), 董建新1,2, 李亚楠1, 朱国芬1,2, 丁晓松3   

  1. 1.河北民族师范学院,河北 承德 067000
    2.植物学国家民委重点实验室,河北 承德 067000
    3.塞罕坝机械林场,河北 围场 068453
  • 收稿日期:2023-07-19 出版日期:2024-09-11 发布日期:2024-09-11
  • 作者简介:熊雪,女,河北承德人,副教授,博士,主要从事草地生态管理、植物抗逆生理等方面的研究,E-mail: xiongxue1987@126.com
  • 基金资助:
    河北省高等学校科学技术研究项目(QN2021419)

Comparison of drought resistance during germination of four perennial ryegrass varieties

XIONG Xue1,2(), DONG Jianxin1,2, LI Yanan1, ZHU Guofen1,2, DING Xiaosong3   

  1. 1. Hebei Minzu Normal University, Chengde 067000, Hebei
    2. Key Laboratory of Botany State Ethnic Affairs Commission, Chengde 067000, Hebei
    3. Saihanba Machinery Forest Farm, Weichang 068453, Hebei
  • Received:2023-07-19 Online:2024-09-11 Published:2024-09-11

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。

关键词: 多年生黑麦草, 萌发期, 抗旱性, 隶属函数法

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.

Key words: perennial ryegrass, germination period, drought resistance, membership function method

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