低温胁迫对俄罗斯大果沙棘抗寒生理指标的影响
Effects of Low Temperature Stress on Physiological Indexes of Hippophae rhamnoides Hrm.Variety from Russia
吴飞 1朱生秀 1向江湖 1李万栋1
作者信息
- 1. 新疆西部绿洲生态发展有限责任公司,新疆克拉玛依 834000
- 折叠
摘要
[目的]探讨不同低温条件下,沙棘抗寒生理指标变化及与抗寒性的关系.[方法]以俄罗斯大果沙棘1年生枝条为试验材料,通过-30~-10 ℃低温胁迫处理,测定其含水量、渗透调节物质、保护酶活性指标与抗寒性的关系.[结果]沙棘在低温条件下,枝条中自由水/束缚水比值较小,丙二醛含量随温度的变化而呈规律性变化;可溶性糖、可溶性蛋白含量随温度呈相反的变化趋势;随着温度的降低,沙棘枝条中保护酶活性增强.[结论]沙棘应对低温能力较强,通过各生理指标调节系统稳定,具有较强的渗透调节能力.
Abstract
[Objective] To investigate the physiological indexes of Hippophae rhamnoides and its relationship with cold resistance under the different low temperature.[Method] One-year old Russian Hippophae rhamnoides branches was used as experimental materials,and through-30——10 ℃ low temperature stress treatment, measured water content, osmotic adjustment, the relationship protected activity index and cold resistance.[Result] After low temperature treatment, shoots free water / bound water ratio was small, and MDA content changed with temperature regularly;Soluble sugar, soluble protein content with temperature showed the opposite trend;With decreasing temperature, the protection activity of Hippophae rhamnoides increased.[Conclusion] Hippophae rhamnoides has strong cold resistance, regulating system stability through physiological indices, with strong osmotic adjustment ability.
关键词
沙棘/低温胁迫/抗寒指标/渗透调节物质/保护酶活性Key words
Hippophae rhamnoides/Low temperature stress/Cold resistance index/Osmotic adjustment/Protective enzyme activity引用本文复制引用
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据