作物杂志,2016, 第3期: 158–162 doi: 10.16035/j.issn.1001-7283.2016.03.029

• 种子科技 • 上一篇    下一篇

三种野豌豆属牧草种子萌发期抗旱性的研究

任永霞1,郭郁频1,刘贵河1,孙芳2,曹春梅1,肖彩月1   

  1. 1河北北方学院动物科技学院,075000,河北张家口
    2河北北方学院经济管理学院,075000,河北张家口
  • 收稿日期:2016-05-06 修回日期:2016-05-23 出版日期:2016-06-15 发布日期:2018-08-26
  • 通讯作者: 郭郁频
  • 作者简介:任永霞,教授,主要从事牧草生理、草地生态研究
  • 基金资助:
    河北北方学院校级课题(2011015);河北北方学院创新人才培育项目(CXRC1313)

Drought Resistance of Three Forage Species in Vicia during Germination Period

Ren Yongxia1,Guo Yupin1,Liu Guihe1,Sun Fang2,Cao Chunmei1,Xiao Caiyue1   

  1. 1College of Animal Science and Technology,Hebei North University,Zhangjiiakou 075000,Hebei,China
    2College of Economics and Management,Hebei North University,Zhangjiakou 075000,Hebei,China
  • Received:2016-05-06 Revised:2016-05-23 Online:2016-06-15 Published:2018-08-26
  • Contact: Yupin Guo

摘要:

以毛叶苕子、箭筈豌豆及光叶苕子种子为材料,用不同浓度(0、5%、10%、15%、20%)的聚乙二醇(PEG-6000)模拟干旱进行发芽试验。对供试牧草种子的生物学特性及干旱胁迫下种子萌发期的相对发芽势、相对发芽率、相对发芽指数、相对活力指数、相对芽长、抗旱指数等指标进行研究,并采用隶属函数法对三种牧草种子萌发期的抗旱性进行综合评价。结果表明:(1)箭筈豌豆种子吸水率大于光叶苕子、毛叶苕子种子,光叶苕子种子含水量、种子活力大于其他两种牧草种子。(2)随着PEG浓度的升高,三种牧草种子相对发芽势、相对发芽率、相对发芽指数、相对活力指数与抗旱指数总体呈下降趋势。(3)5% PEG能促进毛叶苕子种子的萌发。(4)三种牧草的抗旱性强弱顺序为箭筈豌豆>光叶苕子>毛叶苕子。

关键词: 豆科牧草, 生物学特性, PEG胁迫, 萌发期, 抗旱性

Abstract:

In this paper, seeds of Vicia villosa Roth., V. sativa L.and V. villosa var. glubrescens were taken as the materials. The germination test was determined with different concentrations (0, 5%, 10%, 15%, 20%) of polyethylene glycol (PEG-6000) to simulate drought stress. The relative germination potential, relative germination persentage, relative germination index, relative vigor index, relative shoot length and drought resistance index were studied. The results showed that (1) The three species had different biological seed characteristics. Seed water content and seed vitality of V.villosa var. glabrescent was higher than the others. (2) With the increasing concentration of PEG-6000, five indexes tended to decline. (3) 5% PEG could promote seed germination of V. Villosa Roth. (4) For drought resistance of three forage species, the order was V. sativa L. > V. villosa var. glabrescens > V. Villosa Roth.

Key words: Legumes, Biological characteristics, PEG stress, Germination period, Drought resistance

表1

三种牧草种子的生物学特性比较"

供试材料Test materials 含水量Water content 吸水率Water absorption rate 电导率Electrical conductivity
毛叶苕子Vicia villosaRoth. 0.097±0.01ab 82.67±4.16a 23.26±6.93a
箭筈豌豆V.sativa L. 0.090±0.00b 91.00±4.58a 23.12±2.34a
光叶苕子V.villosavar.glabrescens 0.100±0.00a 83.33±5.13a 15.99±0.35a