北方农业学报 ›› 2018, Vol. 46 ›› Issue (2): 21-21.

• 育种·栽培·分子生物学 • 上一篇    下一篇

反复干旱对禾本科牧草品种幼苗抗旱差异的影响

李金龙[1];杨德光[2];孙平立[1];平翠枝[1]   

  1. [1]阿荣旗农业技术推广中心,内蒙古阿荣旗162750;[2]东北农业大学农学院,黑龙江哈尔滨150030
  • 出版日期:2018-04-20 发布日期:2018-04-20
  • 通讯作者: 李金龙
  • 作者简介:李金龙(1982-),男,农艺师,学士,主要从事农业技术推广示范方面的研究工作。
  • 基金资助:
    内蒙古科技计划项目

Effect of repeated drought on the difference of drought resistance of seedling of gramineous grass varieties

LI Jinlong1,YANG Deguang2,SUN Pingli2,PING Cuizhi1 (1. Arong Agricultural Technology Promotion Center, Arong Banner 162750, China; 2. College of Agronomy, Northeast Agricultural University, Harbin 150030, China)   

  • Online:2018-04-20 Published:2018-04-20

摘要: 为明确反复干旱处理条件下禾本科牧草品种幼苗抗旱性差异,选择10个禾本科牧草品种,分析比较各牧草品种的出苗率、根冠比、电导率、叶绿素合量以及过氧化物酶活性等指标的差异。结果表明:毛偃麦草的出苗率最大,埃克薄冰草的出苗率最小;苏联沙生冰草的根冠比最大,而埃克薄冰草的根冠比最小;而埃克薄冰草的电导率值最大,焦斯薄冰草的电导率最小;叶绿素合量最大的牧草品种是苏联沙生冰草,最小的牧草品种是埃克薄冰草;过氧化物酶活性以苏联沙生冰草最大,偃麦草最小。通过各指标的综合评价得出苏联沙生冰草、大赖草、毛偃麦草、焦斯薄冰草幼苗的抗旱性较强,而泰瑞薄冰草、埃克薄冰草和偃麦草幼苗的抗旱能力较差,其余3个牧草品种的抗旱性位于7个牧草品种之间。

Abstract: In order to clarify the difference of drought resistance of gramineous forage seedling varieties under repeated drought treatment, 10 gramineous forage varieties were selected, and the emergence rate, root-shoot ratio, electrical conductivity ,chlorophyll content and peroxidase activity of each forage variety were analyzed and compared. The results showed that the emergence rate of Elytrigia trichophora (Ling) Nevsky. was the largest, the emergence rate of Thinopyrum pontivum(Alker) was the lowest, the root-shoot ratio of the (Agropyron desertorum (Fisch.) Schult.) was the largest and the root-shoot ratio of Thinopyrum pontivum (Alker) was the lowest. The highest electric conductivity of Thinopyrum pontivum (Alker) and the lowest of the electric conductivity of Thinopyrum pontivum (Jose), the largest chlorophyll content of the grass variety is the Agropyron desertorum (Fisch.) Schult., the smallest forage species is Thinopyrum pontivum (Alker), The activity of peroxidase of the Agropyron desertorum (Fisch.) Schult. was the largest and the lowest in Elytrigia repens(L.) Dasv. The results of comprehensive evaluation showed that the seedlings of Agropyron desertorum (Fisch.) Schult., Leymus racemasus, Elytrigia trichophora (Ling)Nevsky., Thinopyrum pontivum (Jose) had strong drought resistance, while the seedlings of Thinopyrum pontivum (Tyrell), Thinopyrum pontivum(Alker), Elytrigia repens(L.)Desv were less resistant to drought. The drought resistance of the other three forage varieties was between 7 forage varieties.

中图分类号: 

  • S54