Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2017, Vol. 25 ›› Issue (1): 199-203.DOI: 10.11733/j.issn.1007-0435.2017.01.030

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Influence of Seed Soaking Agents and Dehydration Time on the Seed Germination of Poa pratensis

ZHANG Ying, SONG Shu-hong, WANG Hong-jun, CHEN Zhi-fei, ZHANG Xiao-na, XIONG Bi-han, YANG Yun-gui   

  1. College of Animal Sciences and Technology, Northwest A&F University, Yangling, Shaanxi Province 712100, China
  • Received:2016-04-28 Revised:2016-10-25 Online:2017-02-15 Published:2017-05-06

浸种剂和回干时间对草地早熟禾萌发期耐盐性影响

张莹, 宋书红, 王红俊, 陈志飞, 张晓娜, 熊碧涵, 杨云贵   

  1. 西北农林科技大学动物科技学院, 陕西 杨凌 712100
  • 通讯作者: 杨云贵,E-mail:yungui999@163.com
  • 作者简介:张莹(1992-),女,甘肃古浪人,硕士研究生,主要从事草地生态和牧草营养价值评定研究,E-mail:767215834@qq.com
  • 基金资助:

    国家牧草产业技术体系“优质牧草产品标准化生产关键技术”（CARS-35-01A）；国家燕麦产业技术体系“燕麦加工利用”（CARS-08-D1）资助

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Abstract:

Four soaking agents were chosen: H2O, 0.5 mmol·L-1 Salicylic acid (SA), 2.0%KNO3, 2.0%Ca(NO3)2. Different soaking-dehydration combination treatments were applied to the seeds of Kentucky bluegrass cultivar ‘Merit’. The treated seeds were geminated under salt stress (100 mmol·L-1NaCl). Fresh weight and related indicators were measured and the results showed that soaking agent and dehydration time affected salt tolerance of Kentucky bluegrass. And the order of the effect was: 2.0%Ca(NO3)2 soaking-8 h dehydration, 2.0%KNO3 soaking-8 h dehydration and then 0.5 mmol·L-1 SA soaking-8 h dehydration.

Key words: Poa pratensis, Seed soaking agents, Seed dehydration time, Seed germination, Salt tolerance

摘要：

试验选用4种浸种剂：水、0.5 mmol·L-1水杨酸、2.0%硝酸钾溶液、2.0%硝酸钙溶液，分别对草地早熟禾品种优异（Poa pretensis‘Merit’）进行100 mmol·L-1NaCl盐胁迫下不同时间的浸种-回干处理。对幼苗鲜重等相关指标进行测定，结果表明浸种-回干对提高草地早熟禾耐盐性强弱依次为：2.0%硝酸钙溶液浸种回干8 h、2.0%硝酸钾溶液浸种回干8 h、0.5 mmol·L-1水杨酸浸种回干8 h。

关键词: 草地早熟禾, 浸种剂, 回干时间, 种子发芽, 耐盐性

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