植物学报 ›› 2019, Vol. 54 ›› Issue (2): 208-216.DOI: 10.11983/CBB18089

所属专题: 逆境生物学专辑

• 研究报告 • 上一篇    下一篇

棉粕对盐碱胁迫下棉花生理及生长补偿效应

马宏秀,王开勇(),张开祥,孟春梅,安梦洁   

  1. 石河子大学农学院, 石河子 832000
  • 收稿日期:2018-04-08 接受日期:2018-08-23 出版日期:2019-03-10 发布日期:2019-09-01
  • 通讯作者: 王开勇

Effect of Cottonseed Meal on Cotton Physiology and Growth Compensation Under Salinity-alkalinity Stress

Hongxiu Ma,Kaiyong Wang(),Kaixiang Zhang,Chunmei Meng,Mengjie An   

  1. Agricultural College, Shihezi University, Shihezi 832000, China
  • Received:2018-04-08 Accepted:2018-08-23 Online:2019-03-10 Published:2019-09-01
  • Contact: Kaiyong Wang

摘要:

为探究棉粕对盐碱胁迫下棉花(Gossypium hirsutum)的抗盐碱机理, 通过田间试验, 研究添加不同棉粕用量对8 g·kg -1盐碱胁迫下棉花生理及生长的补偿效应。结果表明, 添加棉粕能够增加盐碱胁迫下棉花不同器官对K +的吸收, 降低对Na +的吸收, 维持盐碱胁迫下细胞内K +和Na +的平衡, 显著促进棉花生长, 提高叶片叶绿素含量和光合作用效率, 有效缓解盐碱胁迫对棉花的伤害。其中, 以添加6 000 kg·hm -2棉粕处理的效果最显著, 且盐胁迫下棉粕的改良效果较好。主成分分析结果表明, 盐碱胁迫下棉花生长生理的主要影响因子为叶片K +/Na +比值、根长、鲜重、干重和胞间CO2浓度(Ci)。

关键词: 棉粕, 盐碱胁迫, 生理, 生长, 补偿效应

Abstract:

We investigated the salt-tolerant mechanism of cottonseed meal in cotton (Gossypium hirsutum) under sali- nity-alkalinity stress. Salinity-alkalinity stress of 8 g·kg -1was tested in the field to explore the effect of cottonseed meal dose on the physiology and growth of cotton. Cottonseed meal could increase the absorption of K + and decrease that of Na +. K + and Na + were kept in ion balance in cells under salinity-alkalinity stress. Cottonseed meal could effectively alleviate damage to cotton, significantly promote growth of cotton, and improve chlorophyll content and photosynthesis of leaves. An amount of 6 000 kg·hm -2 cottonseed meal was the most significant treatment, and the improvement effect of cottonseed meal under salt stress was better. According to principal component analysis, the K +/Na +ratio in leaves, root length, fresh weight, dry weight and intercellular CO2 concentration were the main factors involved in salinity-alkalinity stress.

Key words: cottonseed meal, salinity-alkalinity stress, physiology, growth, compensation effect