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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (6): 25-29.doi: 10.11924/j.issn.1000-6850.casb17050075

• 农学 农业基础科学 • 上一篇    下一篇

混合碱胁迫对碱茅和紫花苜蓿种子萌发的影响

赵满兴,崔亚荣,王文强,龚鹏飞,曹阳阳,杨旭艳,贺治慧   

  1. 延安大学生命科学学院,延安大学生命科学学院,延安大学生命科学学院,延安市烟草公司,延安大学生命科学学院,延安大学生命科学学院,延安大学生命科学学院
  • 收稿日期:2017-05-17 修回日期:2017-07-04 接受日期:2017-07-24 出版日期:2018-02-26 发布日期:2018-02-26
  • 通讯作者: 赵满兴
  • 基金资助:
    陕西省高水平大学建设专项资金资助项目“生态学”(2012SXTS03)；陕西省省级精品资源共享课程“生态学”(2015-113)；延安大学引导项 目“延安北部县区退耕后土壤可溶性有机氮矿化及光谱特性研究”(YD2016-08)。

Effect of Mixed Salt-alkaline Stress on Seed Germination of Puccinellia distans and Medicago sativa L.

  • Received:2017-05-17 Revised:2017-07-04 Accepted:2017-07-24 Online:2018-02-26 Published:2018-02-26

摘要： 采用室内种子萌发实验方法,以碱茅(Puccinellia distans),紫花苜蓿(Medicago sativa L)两种牧草种子为研究对象,以NaHCO3和Na2CO3为基础盐分,将NaHCO3 和Na2CO3按照1:0,2:1,1:1,1:2,1:1的比例配成相同浓度的复合溶液,研究不同混合盐分胁迫对碱茅和紫花苜蓿种子发芽率、发芽势、发芽指数、芽长和芽重的影响。结果表明：不同比例的混合盐分胁迫对碱茅和苜蓿种子的发芽率、发芽势、发芽指数和芽长均有明显地抑制作用。但是,不同盐分组合处理间对碱茅和紫花苜蓿的芽重的影响比单一盐分要小。单一盐分比较,NaHCO3的抑制作用更强。NaHCO3 和Na2CO3的比例为1:1时,对两种种子的发芽抑制作用最强。两种牧草比较,Na2CO3 和NaHCO3混合盐分胁迫对碱茅种子萌发的抑制作用较弱,对紫花苜蓿种子萌发的抑制作用较强。

关键词: 烤烟, 烤烟, 烟垄, ‘翠碧一号’

Abstract: The effects of two saline-alkaloid (NaHCO3, Na2CO3) and their mixed solutions (1:0、2:1、1:1、1:2、1: 1) onPuccinellia distans andMedicago sativa L. seed germination rate, germination potential, germination index, bud length and bud weight were studied by indoor experiments. The results showed that the germination rate, germination potential, germination index and bud length were obviously inhibited by the mixed salinealkaloid solutions, but the effect of mixed saline-alkaloid solutions on bud weight was smaller than that of single saline-alkaloid treatment. The inhibiting effect of NaHCO3 was higher than that of Na2CO3, and when the mixed ratio of the two saline-alkaloid was 1:1, the inhibiting effect was the highest. The mixed saline-alkaloid stress had poor inhibition onPuccinellia distans seed germination, but strong inhibition onMedicago sativa L. seed germination.

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