中国稻米

• 品种与技术 • 上一篇    下一篇

海稻86萌发期耐盐碱性特征初探

  1. 1 长江大学农学院,湖北 荆州434025;2 武汉海稻国际生物科技有限公司,武汉  430205
  • 出版日期:2018-05-20 发布日期:2018-05-20
  • 通讯作者: 成云峰,王晓玲

Primary Exploration on Saline-alkali Tolerance of Haidao 86 in Germination Period

  • Online:2018-05-20 Published:2018-05-20

摘要:

利用盐(NaCl)和碱(Na2CO3)配制梯度浓度盐、碱及盐碱混合溶液,以黄华占为对照,研究海稻86与黄华占对盐碱胁迫的响应,初步探求海稻86萌发期耐盐碱阈值。结果表明,在盐(NaCl)胁迫下,海稻86耐盐性阈值范围为0.9%~1.0%,表现出极强的耐盐性;在碱(Na2CO3)胁迫下,海稻86耐碱性阈值范围为0.30%~0.35%,表现出极强的耐碱性;盐碱混合胁迫下,盐碱互作效应明显,本试验条件下,海稻86耐盐碱性阈值范围在 A2(0.8%)B2(0.15%)~A2(0.8%)B3(0.25%)之间。

关键词: 海稻86, 萌发期, 发芽势, 发芽率, 相对盐碱害率

Abstract:

To explore the response of rice variety Haidao 86 under saline-alkali stress, the ability of saline-alkali tolerance of Haidao 86 in germination were studied in the experiment under different salt(NaCl), alkali(Na2CO3)and saline-alkali(NaCl-Na2CO3)mixed stress, with rice variety Huanghuazhan as control. The results showed that: (1)Haidao 86 threshold value of saline tolerance was 0.9%~1.0% under salt(NaCl)stress, which showed Haidao 86 were highly resistant to salt(NaCl); (2)Haidao 86 threshold value of saline-alkali tolerant was 0.30%~0.35% under alkali(Na2CO3)stress,which indicated Haidao 86 were highly resistant to alkali(Na2CO3). (3)Haidao 86 threshold value of saline-alkali tolerant was A2(0.8%)B2(0.15%)~A2(0.8%)B3(0.25%) under saline-alkali mixed stress, and interaction effect of saline-alkali was significant on this study conditions.

Key words: Haidao 86, germination period, germination vigor, germination rate, relative saline-alkali damage rate

中图分类号: